# #81efe9

A color — vivid, light, clean. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#81efe9`
- RGB: rgb(129, 239, 233)
- HSL: hsl(177, 77%, 72%)
- OKLCH: oklch(0.885 0.102 190.8)
- Relative luminance: 0.7228
- Nearest named color: Bath Water (#88eeee, Δ 1.06) — https://brandsweets.com/colors/bath-water
- Moods: vivid, light, clean
- Page: https://brandsweets.com/colors/81efe9

## Tints & shades

- Tints (toward white): #8ef0eb, #97f2ed, #a5f3ef, #aef4f1, #bbf6f3, #c9f8f6, #d2f9f7, #dffbfa, #e8fcfb, #f6fefd
- Shades (toward black): #61eae4, #41e6de, #26e3d9, #1acbc2, #16aca4, #128c86, #0e6c68, #0b514e, #06322f, #021211

## Harmonies

- Complementary: #ef8186
- Analogous: #81efb2, #81bdef
- Triadic: #e981ef, #efe981
- Split-complementary: #ef81bd, #efb281
- Tetradic: #b281ef, #ef8186, #bdef81

## Colors that go with #81efe9

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #81efe9: softer than #000 and cool enough to feel like part of the same palette. Seen in: Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Boeing (https://brandsweets.com/colors/brands/boeing-com), Canopy (https://brandsweets.com/palettes/cool#canopy), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com). — https://brandsweets.com/colors/charcoal
- **Light Coral** #f08080 [harmony, pool: complementary] — Light Coral sits directly opposite #81efe9 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/lightcoral
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #81efe9: 7 real palettes, including Astro's brand system and Salesforce's brand system, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Calendly (https://brandsweets.com/colors/brands/calendly-com). — https://brandsweets.com/colors/deepskyblue
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #81efe9: 4 real palettes, including Pine & Birch and Stone, as the supporting colour. Seen in: Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch), Stone (https://brandsweets.com/palettes/neutral#stone), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal). — https://brandsweets.com/colors/sage-green
- **Slate Gray** #708090 [pool] — 5 real palettes, including Ink Wash and Dusty Blue put Slate Gray beside #81efe9, as the supporting colour. Seen in: Ink Wash (https://brandsweets.com/palettes/dark#ink-wash), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Still Water (https://brandsweets.com/palettes/cool#still-water), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #81efe9 in 16 real palettes, including Mint Chip and Astro's brand system, as the text colour against it. Seen in: Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Astro (https://brandsweets.com/colors/brands/astro-build), Macaron (https://brandsweets.com/palettes/light#macaron), Nursery (https://brandsweets.com/palettes/light#nursery). — https://brandsweets.com/colors/taupe
- **Wheat** #f5deb3 [pool] — Designers have shipped Wheat with #81efe9: 4 real palettes, including Mint Chip and Sorbet, as the accent. Seen in: Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Sorbet (https://brandsweets.com/palettes/light#sorbet), Oatly (https://brandsweets.com/colors/brands/oatly-com), Still Water (https://brandsweets.com/palettes/cool#still-water). — https://brandsweets.com/colors/wheat
- **Plum** #dda0dd [harmony, pool: split] — Plum is a split-complement of #81efe9: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Netlify (https://brandsweets.com/colors/brands/netlify-com), Blossom (https://brandsweets.com/palettes/light#blossom). — https://brandsweets.com/colors/plum

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 1.36:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #11837d (4.6:1); AA: background → #616161 (4.56:1); AAA: text → #0d635f (7.08:1); AAA: background → #454545 (7.06:1)
- On black (#000000): 15.46:1 — AA pass, AA-large pass, AAA pass

## Fonts for this mood

- clean: https://brandsweets.com/fonts/mood/clean

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/81efe9-a2bcbe-d4599b-1f282d-e9f1ed?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#81efe9" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.