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Color Palette Extractor · nicepkg | DecimalAI

design mediaby nicepkg

Color Palette Extractor

nicepkg/color-palette-extractor

Source nicepkg/ai-workflow ↗License MIT

Extract color palettes from images, websites, or designs. Identifies dominant colors, generates complementary schemes, and exports in multiple formats (HEX, RGB, HSL, Tailwind, CSS variables).

SkillScore86Maintained

Automatic

Design & UX Review pack

Last verified 8/24/2026

What it changes

Passed 19 of 22 test cases with the skill, and 5 of 22 without it.

Without skill23%

With skill86%

Checks it passed that the model alone missed

Includes JSON export format
Includes SCSS variable definitions
Provides SCSS variable code exports

and 19 more in the full report

14 fixed5 passed either way3 still failing0 broke

Pass-rate lift: +64 pp
Tokens: +56%
Agent turns: 0%
Response time: -4%

Model gemini-3.6-flashMeasured 8/24/2026v119 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/nicepkg-color-palette-extractor/SKILL.md https://app.decimal.ai/s/nicepkg-color-palette-extractor/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add nicepkg-color-palette-extractor, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/nicepkg-color-palette-extractor/ and pins it in .decimal/skills.lock

decimalai skills add nicepkg-color-palette-extractor

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/nicepkg-color-palette-extractor/SKILL.md https://app.decimal.ai/s/nicepkg-color-palette-extractor/SKILL.md

Raw file: /s/nicepkg-color-palette-extractor/SKILL.md ↗ · machine-readable summary at /s/nicepkg-color-palette-extractor.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 14 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 14

Prompt

Generate a full color palette report for a healthcare portal using serene blue #0284C7 as the dominant brand color and soft slate #F1F5F9 as the background.

What was checked, without and with the skill
Checked	Without skill	With skill
Includes color psychology analysis for serene blue tones	Passed	Passed
Provides numeric contrast ratio values for body text	Passed	Passed
Includes Swift iOS UIColor code exports	Missed	Passed

case-14 · gemini-3.6-flash · 8/24/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md334 linessingle file

Color Palette Extractor

Extract and generate color palettes from images, websites, and designs.

Instructions

When a user needs to extract colors from a source:

Identify Source Type:
- Image file (PNG, JPG, SVG)
- Website URL
- Screenshot
- Design mockup
- Existing color code to build palette from
Extract Colors:

From Image:
- Analyze pixel data
- Identify dominant colors
- Group similar shades
- Calculate color frequency
- Sort by prominence
From Website:
- Fetch and parse CSS
- Extract color values from stylesheets
- Identify brand colors
- Find accent colors
- Detect text/background colors
Color Clustering:
- Use K-means clustering
- Group similar colors
- Typically extract 5-10 dominant colors
- Ignore near-white/near-black unless significant
Generate Color Palette:

Primary Palette (5-10 colors):

Track record

Benchmark

19 / 22

test cases passed, vs 5 / 22 without

Adoption

Users: 2
Times used: 28

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

nicepkg / ai-workflow

workflows/talk-to-slidev-workflow/.claude/skills/color-palette-extractor/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

onewave-ai/color-palette-extractorExtract color palettes from images, websites, or designs. Identifies dominant colors, generates complementary schemes, and exports in multiple formats (HEX, RGB, HSL, Tailwind, CSS variables). Use when users need color schemes from images, brand colors, or design system palettes.Near-identical description0 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

Color Palette Extractor

Instructions

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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