ColorBlacklistBrand [check] v1.0.0

Scans CSS color declarations for blacklisted default brand colors (Tailwind blue-500/600, violet-600, indigo-600, Bootstrap #007bff) that signal generic 'AI slop' aesthetic.

signature: (css: string, context?: object) -> CheckResult predicate: // Scan all color-bearing CSS declarations for blacklisted brand colors. // Blacklist: pure tailwind defaults that signal "AI slop": // - blue-500 (#3b82f6) / blue-600 (#2563eb) // - violet-600 (#7c3aed) / purple-600 (#9333ea) // - indigo-600 (#4f46e5) // - the bootstrap blue #007bff BLACKLIST_HEX = ['#3b82f6','#2563eb','#7c3aed','#9333ea','#4f46e5','#007bff','#0d6efd'] BLACKLIST_NAMED = ['blue-500','blue-600','violet-600','purple-600','indigo-600']

declarations = parseCSS(css).filter(d => /color|background|border|fill|stroke/.test(d.property)) for d in declarations: hex = normalizeToHex(d.value) if BLACKLIST_HEX.includes(hex): yield { selector: d.selector, prop: d.property, value: d.value, fail: 'blacklisted-brand-hex' } for token in BLACKLIST_NAMED: if d.value.includes(token): yield { selector: d.selector, prop: d.property, value: d.value, fail: 'blacklisted-tailwind-default' }

Meta

• License: Apache-2.0
• License Provenance: package-authorship-claim

Validates

@community/rule-color-blacklist-brand

Severity

high

Failure Message Template

Blacklisted brand color '{value}' found at selector '{selector}' (property: {prop}). Reason: {fail}. Replace with a custom oklch() palette derived from the brand.

Evaluation Method

automated

Tools

• regex
• postcss
• @anthropic/claude-code

False Positive Rate

low

ColorBlacklistBrand [check] v1.0.0

Scans CSS color declarations for blacklisted default brand colors (Tailwind blue-500/600, violet-600, indigo-600, Bootstrap #007bff) that signal generic 'AI slop' aesthetic.

signature: (css: string, context?: object) -> CheckResult predicate: // Scan all color-bearing CSS declarations for blacklisted brand colors. // Blacklist: pure tailwind defaults that signal "AI slop": // - blue-500 (#3b82f6) / blue-600 (#2563eb) // - violet-600 (#7c3aed) / purple-600 (#9333ea) // - indigo-600 (#4f46e5) // - the bootstrap blue #007bff BLACKLIST_HEX = ['#3b82f6','#2563eb','#7c3aed','#9333ea','#4f46e5','#007bff','#0d6efd'] BLACKLIST_NAMED = ['blue-500','blue-600','violet-600','purple-600','indigo-600']

declarations = parseCSS(css).filter(d => /color|background|border|fill|stroke/.test(d.property)) for d in declarations: hex = normalizeToHex(d.value) if BLACKLIST_HEX.includes(hex): yield { selector: d.selector, prop: d.property, value: d.value, fail: 'blacklisted-brand-hex' } for token in BLACKLIST_NAMED: if d.value.includes(token): yield { selector: d.selector, prop: d.property, value: d.value, fail: 'blacklisted-tailwind-default' }

Meta

• License: Apache-2.0
• License Provenance: package-authorship-claim

Validates

@community/rule-color-blacklist-brand

Severity

high

Failure Message Template

Blacklisted brand color '{value}' found at selector '{selector}' (property: {prop}). Reason: {fail}. Replace with a custom oklch() palette derived from the brand.

Evaluation Method

automated

Tools

• regex
• postcss
• @anthropic/claude-code

False Positive Rate

low

Relations

related: [@community/rule-color-blacklist-brand, @community/transform-rgb-to-oklch]

Meta

• License: Apache-2.0
• License Provenance: package-authorship-claim

Validates

@community/rule-color-blacklist-brand

Severity

high

Failure Message Template

Blacklisted brand color '{value}' found at selector '{selector}' (property: {prop}). Reason: {fail}. Replace with a custom oklch() palette derived from the brand.

Evaluation Method

automated

Tools

• regex
• postcss
• @anthropic/claude-code

False Positive Rate

low