Emerald
A mid green with the freshness of a spring green.
Create Emerald 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;
$emerald = Color::parse('#10B981');ColorInterface
$emerald
#10b981 · oklch(0.6959 0.1491 162.5)
Build an Emerald harmony
tetradic() keeps Emerald and adds three partners at equal quarter-turns around the OKLCH hue wheel.
<?php
$harmony = $emerald->tetradic();
foreach ($harmony as $color) {
echo $color->toHex().PHP_EOL;
}- 0
#10b981 - 1
#51a0f6 - 2
#db74b6 - 3
#d58b00
Generate an Emerald scale
Keep the original hue and chroma, then vary OKLCH lightness to produce perceptually ordered steps.
<?php
$oklch = $emerald->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 Emerald for the web
The same object can emit a compact Hex value, an sRGB CSS function, or its perceptual OKLCH coordinates.
<?php
$hex = $emerald->toHex();
$rgb = $emerald->toCss('srgb');
$oklch = $emerald->to('oklch')->toCss();- hex
#10b981- rgb
rgb(16 185 129)- oklch
oklch(0.695873 0.149074 162.48)