Sky

A light, cool blue -- the dependable foundation of trustworthy interfaces.

Hex: #38bdf8
sRGB: rgb(56 189 248)
OKLCH: oklch(0.7535 0.1390 232.7)

Sky is a curated PHPColor catalog color with the canonical value #38bdf8.

Create Sky in PHP

Parse the catalog’s canonical value once, then keep the resulting color object throughout the rest of your code.

<?php

use PhpColor\Color\Color;

$sky = Color::parse('#38BDF8');

ColorInterface

$sky

#38bdf8 · oklch(0.7535 0.1390 232.7)

Build a Sky harmony

tetradic() keeps Sky and adds three partners at equal quarter-turns around the OKLCH hue wheel.

<?php

$harmony = $sky->tetradic();

foreach ($harmony as $color) {
    echo $color->toHex().PHP_EOL;
}

0#38bdf8
1#d990e2
2#f39455
3#78c572

Sky and its three generated partners

Generate a Sky scale

Keep the original hue and chroma, then vary OKLCH lightness to produce perceptually ordered steps.

<?php

$oklch = $sky->to('oklch');

foreach ([0.97, 0.92, 0.84, 0.74, 0.66, 0.58, 0.48, 0.40, 0.32, 0.24, 0.16] as $lightness) {
    $step = $oklch->withChannel('l', $lightness);
}

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Explore the complete Sky scale →

Format Sky for the web

The same object can emit a compact Hex value, an sRGB CSS function, or its perceptual OKLCH coordinates.

<?php

$hex   = $sky->toHex();
$rgb   = $sky->toCss('srgb');
$oklch = $sky->to('oklch')->toCss();

hex: #38bdf8
rgb: rgb(56 189 248)
oklch: oklch(0.753513 0.138989 232.661)

Sky

Create Sky in PHP

Build a Sky harmony

Generate a Sky scale

Format Sky for the web

Continue from Sky