Random Pastel Palette Generator
Generate 2 through 32 sRGB hex colors using bounded HSL style ranges and injected randomness.
Description
Generate 2–32 pastel sRGB hex colors using fixed HSL sampling ranges.
Pastel-style swatches combine high HSL lightness with moderate saturation. This generator samples a full hue-wheel span under those fixed style ranges, producing light starting colors for illustrations or design mockups.
CSS defines the sRGB/HSL representations used for these hex swatches.1
The output colors array contains copyable six-digit hex strings without alpha. These are candidate swatches; choosing usable text and background pairs requires an independent contrast check.
When to use Random Pastel Palette Generator
Use it to explore pastel swatches for an illustration, mockup, or design study, then evaluate them in the intended composition.
How to use Random Pastel Palette Generator and understand its results
- Enter integer count from 2 through 32.
- Run the generator and inspect colors in their returned order. Copy each #RRGGBB value into the intended design environment.
- Check text contrast and how the colors work together. Run again for another base or palette; no seed field is exposed.
| Sampled coordinate | Range before hue wrapping |
|---|---|
| Hue | -30 inclusive to 330 exclusive degrees |
| Saturation | 45 inclusive to 75 exclusive percent |
| Lightness | 75 inclusive to 90 exclusive percent |
coordinate = lower + randomDraw × (upper − lower) Three independent draws are consumed per color: hue, saturation, and lightness. Negative hue values wrap around the wheel.
Each sampled HSL triple is converted to sRGB and its channels rounded to 8-bit values. The output colors array contains uppercase #RRGGBB strings; it is not sorted or deduplicated.
{
"input": {
"count": 3
},
"randomDraw": 0.25,
"output": {
"colors": [
"#E5E5AC",
"#E5E5AC",
"#E5E5AC"
]
}
}The count is the array length, not a requested number of distinct colors. Equal draws or RGB rounding can create duplicates. Count one, noninteger counts, and counts above 32 are rejected.
An injected random draw must be finite and within [0, 1). Invalid draws cause a tool error rather than being clamped to the range.
Limitations and assumptions
The default source is Math.random; no seed input or cryptographic entropy guarantee is provided. Repeated runs may select the same result, and the distribution depends on the random source.
The generator does not ensure accessibility contrast, perceptual separation, printing gamut, color-vision suitability, or a complete visual theme. Hex rounding can obscure small HSL differences.
Alternative or Complementary methods
Use another palette convention when its hue structure or style better fits the composition. Compare contrast separately before assigning swatches to text, background, or state indicators.
References
-
CSS Color Module Level 4: HSL and sRGB color representations — World Wide Web Consortium
Similar or alternative tools
- Related Palette Generator
Generate a different style or hue arrangement with an explicit count.
- Random Color Palette Generator
Sample a broader HSL style without the named arrangement.
- Color Contrast Ratio
Check the contrast ratio of chosen foreground and background swatches.