MidnightBlue
A dark, cool indigo -- the dependable foundation of trustworthy interfaces.
Create MidnightBlue 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;
$midnightblue = Color::parse('#191970');ColorInterface
$midnightblue
#191970 · oklch(0.2881 0.1436 272.8)
Build a MidnightBlue harmony
tetradic() keeps MidnightBlue and adds three partners at equal quarter-turns around the OKLCH hue wheel.
<?php
$harmony = $midnightblue->tetradic();
foreach ($harmony as $color) {
echo $color->toHex().PHP_EOL;
}- 0
#191970 - 1
#5c0024 - 2
#432300 - 3
#003e31
Generate a MidnightBlue scale
Keep the original hue and chroma, then vary OKLCH lightness to produce perceptually ordered steps.
<?php
$oklch = $midnightblue->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 MidnightBlue for the web
The same object can emit a compact Hex value, an sRGB CSS function, or its perceptual OKLCH coordinates.
<?php
$hex = $midnightblue->toHex();
$rgb = $midnightblue->toCss('srgb');
$oklch = $midnightblue->to('oklch')->toCss();- hex
#191970- rgb
rgb(25 25 112)- oklch
oklch(0.288119 0.143626 272.765)