Conversion
Convert HEX to RGB
Parse a hexadecimal color and emit CSS RGB or read its integer channels.
Color Recipes
Focused, copyable PHPColor solutions for parsing, conversion, generation, transformation, composition, evaluation, and everyday PHP tasks.
Conversion
Convert RGB to CMYK
Convert an RGB or hexadecimal input to device-cmyk() and CMYK channels.
Conversion
Convert HEX to HSL
Format a hexadecimal sRGB color as CSS hsl() or read its HSL channels.
Generation
Generate a random vivid color
Generate random colors with controlled lightness and chroma instead of arbitrary RGB channels.
Conversion
Inspect a color in several spaces
Build a compact report that keeps delivery values, perceptual coordinates, and luminance distinct.
Generation
Generate a stable color from a string
Derive the same readable-looking color for a username, tag, or other stable key.
Conversion
Write a Display P3 color with an sRGB fallback
Emit a broadly supported sRGB declaration before a wider-gamut Display P3 enhancement.
Evaluation
Determine whether a color is dark
Classify any parsed color using PHPColor's luminance-based light and dark helpers.
Generation
Generate semantic theme colors
Derive status colors from a brand chroma and verify an accessible foreground for each role.
Parsing
Validate a submitted CSS color
Validate submitted CSS color text without exception-based control flow, then verify the accepted value survives a CSS serialization round trip.
Transformation
Derive button states from a brand color
Create hover and pressed colors by adjusting perceptual lightness without mutating the brand color.
Parsing
Preserve Display P3 in a stored CSS token
Store a Display P3 color as CSS, restore it as the same concrete color type, and verify the tested channels and alpha after the round trip.
Transformation
Create a translucent overlay token
Derive a translucent CSS token from an opaque color while preserving the tested color space and channels and leaving the source object unchanged.
Composition
Generate a triadic color palette
Derive three colors spaced evenly around the hue wheel from one source color.
Parsing
Normalize a mixed-format palette to OKLCH
Parse a keyed palette containing hex, OKLCH, and Display P3 colors, then emit one reparsable OKLCH representation without losing its keys.
Generation
Create a seven-step OKLCH scale
Hold chroma and hue steady while sampling seven explicit perceptual lightness values.
Transformation
Derive a light palette from dark tokens
Produce light-mode candidates from an existing named dark palette without changing its keys.
Evaluation
Detect a palette harmony
Classify a palette by comparing its perceptual hue angles with known harmony patterns.
Composition
Generate a complementary palette
Pair a source color with the color opposite it on the perceptual hue wheel.
Parsing
Validate palette entries separately
Keep valid colors from a submitted palette while reporting each rejected entry by name.
Evaluation
Choose black or white text
Select whichever standard text color has the stronger WCAG contrast against a known background.
Conversion
Export a palette as CSS variables
Turn a named PHPColor palette into a block of hexadecimal CSS custom properties.
Composition
Interpolate a brand transition
Generate seven evenly positioned colors between two brand endpoints in Oklab.
Transformation
Shift an entire palette hue
Rotate every palette color by the same perceptual hue angle while retaining token names.
Evaluation
Check contrast after compositing
Measure the visible contrast of translucent text after it is composited onto its background.
Composition
Sample a scale at token positions
Read perceptually mixed colors from a scale at the exact positions required by a token system.
Evaluation
Find the nearest palette token
Map an arbitrary color to the closest value already available in a controlled palette.
Composition
Repair a triadic palette
Realign an uneven three-color palette to triadic hue angles while keeping its names and perceptual character.
Evaluation
Compare brand revisions with CIEDE2000
Measure the perceptual distance between an old brand color and a proposed replacement.
Evaluation
Simulate a palette for deuteranopia
Produce a comparable palette that approximates deuteranopic color perception.
Evaluation
Find the minimum overlay opacity
Calculate the lowest alpha that lets one foreground reach a required contrast ratio over one known background.
Evaluation
Audit token contrast
Test the intentional foreground and background pairs in a token system instead of producing noise from every possible combination.
Evaluation
Audit status colors across vision profiles
Test the semantic color pairs that must remain distinct under every PHPColor vision simulation profile.