Color conversion for HEX to RGBA, HSL to RGBA, RGB to RGBA.

Convert HEX/HEXa/aHEX with alpha to RGBa and back

Filter that lets you change RGBA via a 5x4 matrix transformation

Validate HTML colors by 'name', 'special name', 'hex', 'rgb', 'rgba', 'hsl', 'hsla', 'hwb', 'lab' or 'lch' values

PostCSS plugin to transform W3C CSS Color Module Level 4 rgb() new syntax to more compatible CSS (comma-separated rgb() or rgba())

PostCSS plugin to transform W3C CSS hwb() color to more compatible CSS (rgb() (or rgba()))

Convert Hex colors to either RGBA or HSLA

Regular expressions for rgb, rgba, hex, hexa, hsl & hsla colors

### Generate a random rgba color string, using an optional opacity (alpha) value

Convert rgba() values to hex

colorcolor converts Hex/HexA/RGB/RGBA/HSL/HSLA/HSV/HSB/HWB color strings to Hex/HexA/RGB/RGBA/HSL/HSLA/HSV/HSB/HWB color strings.

Experimental preview renderer for @office-kit/pptx: render a slide to SVG (browser + Node) or rasterize it to a PNG/RGBA image in Node, with no browser binary.

Web color picker with opacity channel (alpha channel) and custom palette. Supports CSS colors such as rgba() and hex, including #rrggbbaa.

NPM package for generating random RGB, RGBA, HSL and HSLA colors.

Bedrock color primitive — packed-RGBA pack/unpack, sRGB↔linear transfer, HSL/HSV, OkLab, luminance/contrast, premultiply, hex; pure value/space math over plain numbers and LinearColor

Converts an RGB or RGBA color to a CSS hex color code

Measure differences between 2 identically sized buffer arrays of gray, rgb, or rgba pixels.

JavaScript Color class that manipulates colors and converts them to CSS-compatible hex or rgba strings

OpenEXR scanline parser/decoder/encoder and backend-neutral RGBA helpers for browser and Node.js

PostCSS plugin to transform color from '#rgb.a' to rgba()