Mustard
A pastel yellow with the freshness of a spring yellow.
Create Mustard 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;
$mustard = Color::parse('#FFDB58');ColorInterface
$mustard
#ffdb58 · oklch(0.8985 0.1513 93.7)
Build a Mustard harmony
tetradic() keeps Mustard and adds three partners at equal quarter-turns around the OKLCH hue wheel.
<?php
$harmony = $mustard->tetradic();
foreach ($harmony as $color) {
echo $color->toHex().PHP_EOL;
}- 0
#ffdb58 - 1
#34fee8 - 2
#bed5ff - 3
#ffb1d2
Generate a Mustard scale
Keep the original hue and chroma, then vary OKLCH lightness to produce perceptually ordered steps.
<?php
$oklch = $mustard->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);
}50
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Format Mustard for the web
The same object can emit a compact Hex value, an sRGB CSS function, or its perceptual OKLCH coordinates.
<?php
$hex = $mustard->toHex();
$rgb = $mustard->toCss('srgb');
$oklch = $mustard->to('oklch')->toCss();- hex
#ffdb58- rgb
rgb(255 219 88)- oklch
oklch(0.898458 0.151323 93.6583)