# #57cbb4

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

## Values

- Hex: `#57cbb4`
- RGB: rgb(87, 203, 180)
- HSL: hsl(168, 53%, 57%)
- OKLCH: oklch(0.769 0.111 178.1)
- Relative luminance: 0.4803
- Nearest named color: Cockatoo (#58c8b6, Δ 0.991) — https://brandsweets.com/colors/cockatoo
- Moods: neutral
- Page: https://brandsweets.com/colors/57cbb4

## Tints & shades

- Tints (toward white): #67d0bb, #76d5c2, #86dac9, #96dfd0, #a9e5d9, #b9e9e0, #c8eee7, #d8f3ee, #e8f8f5, #f7fdfc
- Shades (toward black): #44c5ac, #37b39b, #31a08a, #2b8c79, #257968, #1e6254, #184e43, #123b32, #0b231e, #05100d

## Harmonies

- Complementary: #cb576e
- Analogous: #57cb7a, #57a9cb
- Triadic: #b457cb, #cbb457
- Split-complementary: #cb57a9, #cb7a57
- Tetradic: #7a57cb, #cb576e, #a9cb57

## Colors that go with #57cbb4

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 #57cbb4: 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), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #57cbb4 in 5 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), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), 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 #57cbb4: 5 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), Snowflake AI Data Cloud (https://brandsweets.com/colors/brands/snowflake-com), Max (https://brandsweets.com/colors/brands/max-com). — https://brandsweets.com/colors/deepskyblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #57cbb4 in 4 real palettes, including Docker's brand system and Khan Academy's brand system, as the supporting colour. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/royalblue
- **Sandy Brown** #f4a460 [harmony, pool: triadic] — Sandy Brown completes a triad with #57cbb4 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Ubereats (https://brandsweets.com/colors/brands/ubereats-com). — https://brandsweets.com/colors/sandybrown
- **Slate Gray** #708090 [pool] — 6 real palettes, including Ledger Dark and Indigo SaaS put Slate Gray beside #57cbb4, as the supporting colour. Seen in: Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Still Water (https://brandsweets.com/palettes/cool#still-water), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #57cbb4 in 24 real palettes, including Crayon Box and Resort, as the text colour against it. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Resort (https://brandsweets.com/palettes/light#resort), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Polaroid (https://brandsweets.com/palettes/light#polaroid). — https://brandsweets.com/colors/taupe
- **Wheat** #f5deb3 [pool] — Designers have shipped Wheat with #57cbb4: 5 real palettes, including Resort and Mint Chip, as the accent. Seen in: Resort (https://brandsweets.com/palettes/light#resort), Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Oatly (https://brandsweets.com/colors/brands/oatly-com), Still Water (https://brandsweets.com/palettes/cool#still-water). — https://brandsweets.com/colors/wheat

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

- On white (#ffffff): 1.98:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #28816f (4.71:1); AA: background → #474747 (4.69:1); AAA: text → #1e6254 (7.17:1); AAA: background → #2b2b2b (7.15:1)
- On black (#000000): 10.61:1 — 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/57cbb4-a2bebc-d459ad-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: "#57cbb4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.