# #81cfc2

A color — neutral. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#81cfc2`
- RGB: rgb(129, 207, 194)
- HSL: hsl(170, 45%, 66%)
- OKLCH: oklch(0.8 0.08 182.5)
- Relative luminance: 0.5319
- Nearest named color: Hidden Sea Glass (#6fd1c9, Δ 1.668) — https://brandsweets.com/colors/hidden-sea-glass
- Moods: neutral
- Page: https://brandsweets.com/colors/81cfc2

## Tints & shades

- Tints (toward white): #8cd4c8, #97d8cd, #a6ddd4, #b1e2da, #bce6df, #c8eae4, #d3eeea, #e1f4f1, #edf8f6, #f8fcfb
- Shades (toward black): #6bc7b8, #55bead, #42ae9c, #3a9888, #318174, #296b60, #20554c, #163b35, #0e2521, #060f0d

## Harmonies

- Complementary: #cf818e
- Analogous: #81cf9b, #81b5cf
- Triadic: #c281cf, #cfc281
- Split-complementary: #cf81b5, #cf9b81
- Tetradic: #9b81cf, #cf818e, #b5cf81

## Colors that go with #81cfc2

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 #81cfc2: softer than #000 and cool enough to feel like part of the same palette. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Coastal (https://brandsweets.com/palettes/cool#coastal), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Harbour (https://brandsweets.com/palettes/cool#harbour). — https://brandsweets.com/colors/charcoal
- **Lilac** #c8a2c8 [harmony, pool: complementary] — Lilac sits directly opposite #81cfc2 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Crypto.com (https://brandsweets.com/colors/brands/crypto-com), First Snow (https://brandsweets.com/palettes/cool#first-snow). — https://brandsweets.com/colors/lilac
- **Crimson** #dc143c [pool] — Crimson is paired with #81cfc2 in 5 real palettes, including Tiffany & Co.'s brand system and Frost & Ember, as the supporting colour. Seen in: Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Formula 1 (https://brandsweets.com/colors/brands/formula1-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #81cfc2: 5 real palettes, including Salesforce's brand system and Max's brand system, as the lead colour. Seen in: Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Max (https://brandsweets.com/colors/brands/max-com), Astro (https://brandsweets.com/colors/brands/astro-build), Mistral AI (https://brandsweets.com/colors/brands/mistral-ai). — https://brandsweets.com/colors/deepskyblue
- **Hunter Green** #355e3b [pool] — Hunter Green is paired with #81cfc2 in 4 real palettes, including Canopy and Neon's brand system, as the lead colour. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Neon (https://brandsweets.com/colors/brands/neon-tech), Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch), Desert Road (https://brandsweets.com/palettes/warm#desert-road). — https://brandsweets.com/colors/hunter-green
- **Midnight Blue** #191970 [pool] — 5 real palettes, including Telehealth and First Snow put Midnight Blue beside #81cfc2, as the text colour against it. Seen in: Telehealth (https://brandsweets.com/palettes/modern#telehealth), First Snow (https://brandsweets.com/palettes/cool#first-snow), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Lavender Milk (https://brandsweets.com/palettes/light#lavender-milk). — https://brandsweets.com/colors/midnightblue
- **Plum** #dda0dd [harmony, pool: split] — Plum is a split-complement of #81cfc2: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Blossom (https://brandsweets.com/palettes/light#blossom), Netlify (https://brandsweets.com/colors/brands/netlify-com), Mercury (https://brandsweets.com/colors/brands/mercury-com). — https://brandsweets.com/colors/plum
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #81cfc2 in 5 real palettes, including Docker's brand system and Brilliant's brand system, as the supporting colour. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 1.8:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #318174 (4.64:1); AA: background → #4f4f4f (4.54:1); AAA: text → #246056 (7.29:1); AAA: background → #333333 (7:1)
- On black (#000000): 11.64:1 — AA pass, AA-large pass, AAA pass

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/81cfc2-a2bebd-d459a9-1f292d-e9f1ec?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: "#81cfc2" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.