Named color

Cotton Boll

#e7effb

hex#e7effb

rgbrgb(231, 239, 251)

hslhsl(216, 71%, 95%)

oklchoklch(0.95 0.018 258.4)

Relative luminance 0.8569

Cool Vivid Light Technical Modern Clean

Open in palette tool Check contrast

Cotton Boll on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the curated palettes it appears in and any public brand that adopts it.

Tints & shades

Tints — toward white

e9f0fb eef3fc eef3fc eef3fc f2f6fd f2f6fd f2f6fd f2f6fd f6f9fe f6f9fe

Shades — toward black

c2d6f5 9bbcee 73a2e7 4c88e1 256dda 1e58ae 174487 103060 0a1c39 030911

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

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e7effb fbf4e9

#fbf4e9

Analogous

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e7effb e9f9fb ebe9fb

#e9f9fb · #ebe9fb

Triadic

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e7effb fbe9f0 f0fbe9

#fbe9f0 · #f0fbe9

Split-complementary

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e7effb fbebe9 f9fbe9

#fbebe9 · #f9fbe9

Tetradic

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e7effb fbe9f9 fbf4e9 e9fbeb

#fbe9f9 · #fbf4e9 · #e9fbeb

Contrast

Cotton Boll as text	Ratio	AA	AA large	AAA	Fix
Aaon white	1.16:1	fail	fail	fail	AA: use #2e73dc as the text (4.56:1) AAA: use #1d55aa as the text (7.16:1) AA: or shift the background to #6b6b6b (4.6:1) AAA: or shift the background to #4f4f4f (7.07:1)
Aaon black	18.14:1	pass	pass	pass	Passes AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with Cotton Boll as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

3fb950 58a6ff f778ba 0b0f14 e6edf3

Terminal

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Green for success, blue for links, pink for emphasis — the dark-mode developer family, tuned to sit on near-black without glare.

Technical Dark Modern

c9a227 7c8aa5 34d399 0c1222 e8edf5

Ledger Dark

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Gold on midnight is the private-banking cue; the mint accent keeps it from feeling old-money stuffy.

Dark Luxury TechnicalFintech

b08d57 8a97a5 c9c9c9 101418 eef1f4

Estate

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Bronze on charcoal signals premium listings; the silver accent handles secondary detail without adding color.

Luxury Dark ElegantReal Estate

4b5d8a 8b97b3 c07a4e eef0f4 1f2430

Dusk

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Slate blue with a copper accent — calm, professional, slightly editorial; suits consultancies and journals.

Cool Muted Elegant

Fonts for this mood

Cotton Boll reads as cool, vivid, light. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →Clean fonts →

mcpConnect your agent — build around Cotton Boll

live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp

claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp

try this prompt

›analyze #e7effb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e7effb-9ca7c4-df5f4e-201f2d-e9f0f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md