# #51d2ba

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

## Values

- Hex: `#51d2ba`
- RGB: rgb(81, 210, 186)
- HSL: hsl(169, 59%, 57%)
- OKLCH: oklch(0.786 0.118 178.5)
- Relative luminance: 0.5139
- Nearest named color: mediumaquamarine (#66cdaa, Δ 2.313) — https://brandsweets.com/colors/mediumaquamarine
- Moods: neutral
- Page: https://brandsweets.com/colors/51d2ba

## Tints & shades

- Tints (toward white): #61d6c1, #71dac7, #81dfcd, #92e3d4, #a6e8dc, #b6ece2, #c6f0e9, #d6f5ef, #e7f9f5, #f7fdfc
- Shades (toward black): #3ccdb2, #30bba1, #2ba690, #26927e, #207e6d, #1a6558, #155146, #103d35, #092420, #04100e

## Harmonies

- Complementary: #d25168
- Analogous: #51d27a, #51a9d2
- Triadic: #ba51d2, #d2ba51
- Split-complementary: #d251a9, #d27a51
- Tetradic: #7a51d2, #d25168, #a9d251

## Colors that go with #51d2ba

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 #51d2ba: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Canopy (https://brandsweets.com/palettes/cool#canopy), Lagoon (https://brandsweets.com/palettes/vivid#lagoon), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #51d2ba in 4 real palettes, including Tiffany & Co.'s brand system and Riot Games's brand system, as the supporting colour. Seen in: Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #51d2ba: 4 real palettes, including Astro's brand system and Prime Video's brand system, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Remix (https://brandsweets.com/colors/brands/remix-run). — https://brandsweets.com/colors/deepskyblue
- **Slate Gray** #708090 [pool] — 5 real palettes, including Ledger Dark and Still Water put Slate Gray beside #51d2ba, as the supporting colour. Seen in: Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Still Water (https://brandsweets.com/palettes/cool#still-water), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #51d2ba in 20 real palettes, including Crayon Box and Mint Chip, as the text colour against it. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Resort (https://brandsweets.com/palettes/light#resort). — https://brandsweets.com/colors/taupe
- **Wheat** #f5deb3 [pool] — Designers have shipped Wheat with #51d2ba: 5 real palettes, including Mint Chip and Oatly's brand system, as the accent. Seen in: Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Oatly (https://brandsweets.com/colors/brands/oatly-com), Resort (https://brandsweets.com/palettes/light#resort), Still Water (https://brandsweets.com/palettes/cool#still-water). — https://brandsweets.com/colors/wheat
- **Light Coral** #f08080 [harmony: complementary] — Light Coral sits directly opposite #51d2ba on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/lightcoral
- **Dark Salmon** #e9967a [harmony, pool: split] — Dark Salmon is a split-complement of #51d2ba: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Polaroid (https://brandsweets.com/palettes/light#polaroid), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard). — https://brandsweets.com/colors/darksalmon

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

- On white (#ffffff): 1.86:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #218270 (4.68:1); AA: background → #4d4d4d (4.54:1); AAA: text → #196154 (7.29:1); AAA: background → #303030 (7.09:1)
- On black (#000000): 11.28:1 — 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/51d2ba-a2bebc-d459ab-1f2a2d-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: "#51d2ba" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.