297 lines
8.3 KiB
HTML
297 lines
8.3 KiB
HTML
<h1>A colour palette in plain HTML</h1>
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<label>
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<span>Background Colour:</span>
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<input value="#f2f2f3" type="color" id="background-color"></input>
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</label>
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<section class="box">
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A template colour palette written as a self-contained HTML file.
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New palettes can be created easily by copying the file and changing a few CSS variables.
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</section>
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<!-- TODO: Change the base hue and offset here -->
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<section style="--base-hue: 280deg; --saturation: 50%; --offset: calc(360deg / 6)">
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<h2>Primary</h2>
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<!-- Only override values here for slight tweaking -->
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<div class="colors" style="--hue: var(--base-hue);">
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<button style="--lightness: 05%"></button>
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<button style="--lightness: 15%"></button>
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<button style="--lightness: 30%"></button>
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<button style="--lightness: 40%"></button>
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<button style="--lightness: 50%"></button>
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<button style="--lightness: 60%"></button>
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<button style="--lightness: 70%"></button>
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<button style="--lightness: 80%"></button>
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<button style="--lightness: 95%"></button>
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</div>
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<section class="hint box">
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Modify as needed by changing the <code>--hue</code> attribute in the inlined CSS.<br>
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Usage of a separate color picker tool for this step might be preferable.<br>
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</section>
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<h2>Secondary</h2>
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<div class="colors" style="--hue: calc(var(--base-hue) + var(--offset));">
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<button style="--lightness: 05%"></button>
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<button style="--lightness: 15%"></button>
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<button style="--lightness: 30%"></button>
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<button style="--lightness: 40%"></button>
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<button style="--lightness: 50%"></button>
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<button style="--lightness: 60%"></button>
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<button style="--lightness: 70%"></button>
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<button style="--lightness: 80%"></button>
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<button style="--lightness: 95%"></button>
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</div>
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<section class="hint box">
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You can copy any colour to the clipboard by just clicking on its box.
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By default colours are copied as HSLA values.
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This can be changed in the script block at the bottom of the document.
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</section>
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<h2>Tertiary</h2>
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<div class="colors" style="--hue: calc(var(--base-hue) - var(--offset));">
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<button style="--lightness: 05%"></button>
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<button style="--lightness: 15%"></button>
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<button style="--lightness: 30%"></button>
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<button style="--lightness: 40%"></button>
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<button style="--lightness: 50%"></button>
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<button style="--lightness: 60%"></button>
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<button style="--lightness: 70%"></button>
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<button style="--lightness: 80%"></button>
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<button style="--lightness: 95%"></button>
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</div>
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<section class="hint box">
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By making use of <code>calc</code> and <code>var</code>, most of the colour palette can be automated.
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This makes it easier and quicker to make adjustments.
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</section>
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<h2>Neutral</h2>
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<div class="colors" style="--hue: 210deg; --saturation: 5%;">
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<button style="--lightness: 05%"></button>
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<button style="--lightness: 15%"></button>
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<button style="--lightness: 30%"></button>
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<button style="--lightness: 40%"></button>
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<button style="--lightness: 50%"></button>
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<button style="--lightness: 60%"></button>
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<button style="--lightness: 70%"></button>
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<button style="--lightness: 80%"></button>
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<button style="--lightness: 95%"></button>
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</div>
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<section class="hint box">
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By making use of <code>calc</code> and <code>var</code>, most of the colour palette can be automated.
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This makes it easier and quicker to make adjustments.
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</section>
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</section>
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<!-- ======================================== -->
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<!-- ===== STYLES AND APPLICATION LOGIC ===== -->
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<!-- ======================================== -->
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<style>
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:root {
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font-size: 1em;
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color: hsl(220deg, 8%, 20%);
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font-family: "Open Sans", sans-serif;
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}
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body.dark {
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color: hsl(220deg, 8%, 80%);
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}
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* {
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box-sizing: border-box;
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}
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code {
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font-family: "Hack", monospace;
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}
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body {
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display: flex;
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flex-flow: column nowrap;
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align-items: center;
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background: hsl(200deg, 5%, 95%);
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}
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/* The following only does font size shenanigans! */
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h1, h2 {
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text-align: center;
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font-weight: normal;
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font-family: "Raleway", "Quicksand", serif;
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}
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h1 {
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font-size: 2.4em;
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--border: dotted .08em currentcolor;
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border-bottom: var(--border);
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border-top: var(---border);
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width: calc((3rem + .6rem * 2) * 9);
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text-align: center;
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padding: .2em 0;
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}
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h2 {
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font-size: 2em;
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}
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div.colors {
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--separation2: .6em; /* Halved separation */
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display: flex;
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/* padding: var(--separation2); */
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}
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div.colors button {
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--radius: 50%;
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all: unset;
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margin: var(--separation2);
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cursor: pointer;
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border-radius: var(--radius);
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overflow: hidden;
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transition: box-shadow 0.3s;
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} div.colors button::before {
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content: '';
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border-radius: var(--radius);
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background: hsl(var(--hue), var(--saturation, 50%), var(--lightness, 50%));
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box-shadow: .1em .1em .8em hsla(calc(var(--hue) + 30deg), calc(100% - var(--lightness) - 10%), calc(var(--lightness) - 40%), .4) inset;
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width: 3em;
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height: 3em;
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display: block;
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transition: box-shadow 0.3s;
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}
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div.colors button:hover {
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box-shadow: .4em .4em .6em #0004;
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}
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div.colors button:hover::before {
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box-shadow: none;
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}
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body.dark div.colors button:hover {
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box-shadow: .0em .0em .6em hsla(var(--hue), calc(var(--saturation) + 30%), 80%, 60%);
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}
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/* === Popup notification shenanigans === */
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@keyframes fade {
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0% { opacity: 0; transform: translate(-50%, -10%)}
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20% { opacity: 1;}
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50% { opacity: 1;}
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100% { opacity: 0; transform: translate(-50%, -150%)}
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}
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div.notification {
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top: 0em;
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border: 1px solid currentcolor;
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background: hsla(0deg, 0%, 100%, .8);
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font-size: 1em;
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opacity: 0;
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position: fixed;
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padding: .4em; 1em;
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font-weight: bold;
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text-align: center;
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}
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/* === Info Boxes === */
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.box {
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--radius: .3em;
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width: calc((3rem + .6rem * 2) * 9);
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font-style: italic;
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border-radius: var(--radius);
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background: hsla(200deg, 5%, 92%, 1);
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box-shadow: .0em .1em .2em inset hsl(220deg, 8%, 80%);
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padding: 1em 2em;
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position: relative;
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margin: 2em 0em;
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}
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body.dark .box {
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background: hsla(200deg, 5%, 6%, 1);
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box-shadow: .0em .1em .2em inset #0006;
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}
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.hint, .info { --color: hsla(calc( 280deg - calc(360deg / 6)), 50%, 50%, 1) }
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.box::after {
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display: block;
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position: absolute;
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left: 0;
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top: 0;
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height: 100%;
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width: .4em;
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background-color: var(--color, transparent);
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border-radius: var(--radius) 0 0 var(--radius);
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content: '';
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}
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.box.hint::before {
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content: "Hint: ";
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display: inline-block;
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font-weight: bold;
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}
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/* === Utility === */
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[center] { text-align: center; }
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</style>
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<script type="module">
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const showMessage = function(message, color, x, y) {
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let box = document.createElement('div');
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box.innerHTML = message;
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box.classList.add('notification');
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if (x) box.style.left = x+"px";
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if (y) box.style.top = y+"px";
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document.querySelector("body").appendChild(box);
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box.style.setProperty('animation', 'fade 1s');
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box.style.setProperty('animation-fill-mode', 'forwards');
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box.style.setProperty('color', color);
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box.addEventListener("animationend", ({box: target}) => box.parentElement.removeChild(box))
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}
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document.querySelectorAll('div.colors button').forEach(button => {
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button.addEventListener('click', event => {
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const prop = name => getComputedStyle(button)
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.getPropertyValue(name)
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.replace(/^ *| *$/g, "")
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const colour = `hsl(${prop("--hue")}, ${prop("--saturation")}, ${prop("--lightness")})`
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navigator.clipboard.writeText(colour).then(() => {
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const box = button.getBoundingClientRect()
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showMessage(`Copied to Clipboard:<br>${colour}`, colour, box.x+box.width/2, box.y+box.height/2);
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});
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});
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});
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const register = (type, name, initial=undefined) => CSS.registerProperty({
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name: `--${name}`,
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syntax: `<${type}>`,
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inherits: true,
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initialValue: initial,
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})
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register("angle", "hue", "0deg")
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register("percentage", "saturation", "100%")
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register("percentage", "lightness", "50%")
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const backgroundColourButton = document.getElementById("background-color")
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backgroundColourButton.addEventListener("input", event => {
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const rgb = backgroundColourButton.value
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document.body.style.background = rgb
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const channels = rgb
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.match(/[0-9a-f][0-9a-f]/g)
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.map(hex => parseInt(hex, 16))
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.map(num => num / 255)
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const luminosity = channels.reduce((a,b)=>a+b) / 3
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if (luminosity < 0.4) {
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document.body.classList.add("dark")
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} else {
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document.body.classList.remove("dark")
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}
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})
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</script>
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