# #51c2cd

A color — cool, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#51c2cd`
- RGB: rgb(81, 194, 205)
- HSL: hsl(185, 55%, 56%)
- OKLCH: oklch(0.754 0.102 204.1)
- Relative luminance: 0.4474
- Nearest named color: darkturquoise (#00ced1, Δ 3.739) — https://brandsweets.com/colors/darkturquoise
- Moods: cool, modern
- Page: https://brandsweets.com/colors/51c2cd

## Tints & shades

- Tints (toward white): #61c8d1, #71cdd6, #84d4db, #94dae0, #a4dfe5, #b4e5e9, #c4eaee, #d7f1f4, #e7f7f8, #f7fcfd
- Shades (toward black): #3dbbc7, #35abb6, #2e959e, #28828a, #227077, #1d5d63, #174a4f, #103437, #0a2124, #050f10

## Harmonies

- Complementary: #cd5b51
- Analogous: #51cd99, #5185cd
- Triadic: #cd51c2, #c2cd51
- Split-complementary: #cd5185, #cd9951
- Tetradic: #9951cd, #cd5b51, #85cd51

## Colors that go with #51c2cd

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 #51c2cd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Harbour (https://brandsweets.com/palettes/cool#harbour), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Dark Salmon** #e9967a [harmony, pool: complementary] — Dark Salmon sits directly opposite #51c2cd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Polaroid (https://brandsweets.com/palettes/light#polaroid), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard). — https://brandsweets.com/colors/darksalmon
- **Blue** #0000ff [pool] — 4 real palettes, including Canva's brand system and Warp's brand system put Blue beside #51c2cd, as the accent. Seen in: Canva (https://brandsweets.com/colors/brands/canva-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Uber (https://brandsweets.com/colors/brands/uber-com), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/blue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #51c2cd: 5 real palettes, including UEFA's brand system and Coca-Cola's brand system, as the accent. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #51c2cd: 5 real palettes, including Patreon's brand system and Figma's brand system, as the accent. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Figma (https://brandsweets.com/colors/brands/figma), Opensea (https://brandsweets.com/colors/brands/opensea-io), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Confluent's brand system and First Snow put Midnight Blue beside #51c2cd, as the lead colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), First Snow (https://brandsweets.com/palettes/cool#first-snow), Open House (https://brandsweets.com/palettes/clean#open-house), Ford (https://brandsweets.com/colors/brands/ford-com). — https://brandsweets.com/colors/midnightblue
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #51c2cd: 5 real palettes, including First Snow and Crypto.com's brand system, as the accent. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Crypto.com (https://brandsweets.com/colors/brands/crypto-com), Calendly (https://brandsweets.com/colors/brands/calendly-com), Stone (https://brandsweets.com/palettes/neutral#stone). — https://brandsweets.com/colors/powderblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #51c2cd in 8 real palettes, including Confluent's brand system and Brilliant's brand system, as the supporting colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), 1password (https://brandsweets.com/colors/brands/1password-com). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 2.11:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #28828a (4.52:1); AA: background → #454545 (4.54:1); AAA: text → #1e6167 (7.09:1); AAA: background → #262626 (7.17:1)
- On black (#000000): 9.95:1 — AA pass, AA-large pass, AAA pass

## Fonts for this mood

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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/51c2cd-a2b8be-df4e88-1f262d-e9f1ee?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: "#51c2cd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.