Red

A mid, warm orange with the energy of a warm sky.

Hex: #ff0000
sRGB: rgb(255 0 0)
OKLCH: oklch(0.6280 0.2577 29.2)

Red is a standard CSS named color with the canonical value #ff0000.

Create Red 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;

$red = Color::parse('#FF0000');

ColorInterface

$red

#ff0000 · oklch(0.6280 0.2577 29.2)

Build a Red harmony

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

<?php

$harmony = $red->tetradic();

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

0#ff0000
1#7b9900
2#00a9db
3#a34fff

Red and its three generated partners

Generate a Red scale

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

<?php

$oklch = $red->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 Red scale →

Format Red for the web

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

<?php

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

hex: #ff0000
rgb: rgb(255 0 0)
oklch: oklch(0.627955 0.257683 29.2339)

Red

Create Red in PHP

Build a Red harmony

Generate a Red scale

Format Red for the web

Continue from Red