PHP library to simplify color manipulation.
Work in progress.
Create a color and twist it as you want!
<?php
Use Rainbow\Hex;
$color = new Hex("#6d3353");Alpha compositing: http://www.w3.org/TR/compositing-1/#simplealphacompositing http://www.w3.org/TR/SVG11/masking.html#SimpleAlphaBlending
Er, Eg, Eb - Element color value Ea - Element alpha value Cr, Cg, Cb - Canvas color value (before blending) Ca - Canvas alpha value (before blending) Cr', Cg', Cb' - Canvas color value (after blending) Ca' - Canvas alpha value (after blending)
Ca' = 1 - (1 - Ea) * (1 - Ca)
| RGB | HEX | HSL |
|---|---|---|
| rgb(45,45,45) | #2d2d2d | hsl(0,0%,18%) |
| rgb(46,46,46) | #2e2e2e | hsl(0,0%,18%) |
| rgb(47,47,47) | #2f2f2f | hsl(0,0%,18%) |
Alpha blending
https://en.wikipedia.org/wiki/Alpha_compositing#Alpha_blending
Of course, the translucency can range between these extremes, in which case the blended color is computed as a weighted average of the foreground and background colors.