# #51ecb3

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

## Values

- Hex: `#51ecb3`
- RGB: rgb(81, 236, 179)
- HSL: hsl(158, 80%, 62%)
- OKLCH: oklch(0.847 0.154 164.6)
- Relative luminance: 0.6499
- Nearest named color: Aquamarine (#2ee8bb, Δ 2.281) — https://brandsweets.com/colors/aquamarine-2
- Moods: vivid
- Page: https://brandsweets.com/colors/51ecb3

## Tints & shades

- Tints (toward white): #63eebb, #71efc1, #83f1c9, #91f3cf, #a3f5d7, #b6f7df, #c3f8e5, #d6faed, #e3fcf3, #f6fefb
- Shades (toward black): #35e9a7, #19e69b, #17cf8b, #14b379, #119766, #0e7c54, #0b6041, #084932, #052e1f, #02120c

## Harmonies

- Complementary: #ec5189
- Analogous: #51ec65, #51d7ec
- Triadic: #b351ec, #ecb351
- Split-complementary: #ec51d7, #ec6551
- Tetradic: #6551ec, #ec5189, #d7ec51

## Colors that go with #51ecb3

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 #51ecb3: 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), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #51ecb3 in 4 real palettes, including Formula 1's brand system and Tiffany & Co.'s brand system, as the supporting colour. Seen in: Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Wise (https://brandsweets.com/colors/brands/wise-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Taupe** #483c32 [pool] — Taupe is paired with #51ecb3 in 8 real palettes, including Astro's brand system and 7-Eleven's brand system, as the text colour against it. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Blossom (https://brandsweets.com/palettes/light#blossom). — https://brandsweets.com/colors/taupe
- **Hot Pink** #ff69b4 [harmony: complementary] — Hot Pink sits directly opposite #51ecb3 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/hotpink
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #51ecb3: 3 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), Remix (https://brandsweets.com/colors/brands/remix-run). — https://brandsweets.com/colors/deepskyblue
- **Red** #ff0000 [pool] — Red is paired with #51ecb3 in 3 real palettes, including Gatorade's brand system and Wise's brand system, as the supporting colour. Seen in: Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Wise (https://brandsweets.com/colors/brands/wise-com), Mattel (https://brandsweets.com/colors/brands/mattel-com). — https://brandsweets.com/colors/red
- **Light Coral** #f08080 [harmony: split] — Light Coral is a split-complement of #51ecb3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/lightcoral
- **Violet** #ee82ee [harmony: split] — Violet is a split-complement of #51ecb3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/violet

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

- On white (#ffffff): 1.5:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0f855a (4.64:1); AA: background → #595959 (4.67:1); AAA: text → #0b6544 (7.1:1); AAA: background → #3d3d3d (7.24:1)
- On black (#000000): 14:1 — 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/51ecb3-a2beb7-d459c2-1f2c2d-e9f1eb?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: "#51ecb3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.