SteelBlue
A mid, cool blue -- the dependable foundation of trustworthy interfaces.
Create SteelBlue 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;
$steelblue = Color::parse('#4682B4');ColorInterface
$steelblue
#4682b4 · oklch(0.5880 0.0993 245.7)
Build a SteelBlue harmony
tetradic() keeps SteelBlue and adds three partners at equal quarter-turns around the OKLCH hue wheel.
<?php
$harmony = $steelblue->tetradic();
foreach ($harmony as $color) {
echo $color->toHex().PHP_EOL;
}- 0
#4682b4 - 1
#a16593 - 2
#a57037 - 3
#458e63
Generate a SteelBlue scale
Keep the original hue and chroma, then vary OKLCH lightness to produce perceptually ordered steps.
<?php
$oklch = $steelblue->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 SteelBlue for the web
The same object can emit a compact Hex value, an sRGB CSS function, or its perceptual OKLCH coordinates.
<?php
$hex = $steelblue->toHex();
$rgb = $steelblue->toCss('srgb');
$oklch = $steelblue->to('oklch')->toCss();- hex
#4682b4- rgb
rgb(70 130 180)- oklch
oklch(0.588001 0.0993388 245.739)