# #51ecc7

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

## Values

- Hex: `#51ecc7`
- RGB: rgb(81, 236, 199)
- HSL: hsl(166, 80%, 62%)
- OKLCH: oklch(0.852 0.14 173.7)
- Relative luminance: 0.6586
- Nearest named color: Aphrodite Aqua (#45e9c1, Δ 1.298) — https://brandsweets.com/colors/aphrodite-aqua
- Moods: vivid
- Page: https://brandsweets.com/colors/51ecc7

## Tints & shades

- Tints (toward white): #63eecd, #71efd2, #83f1d8, #91f3dc, #a3f5e2, #b6f7e8, #c3f8ec, #d6faf2, #e3fcf6, #f6fefc
- Shades (toward black): #35e9bf, #19e6b6, #17cfa4, #14b38e, #119778, #0e7c62, #0b604c, #08493a, #052e24, #02120f

## Harmonies

- Complementary: #ec5175
- Analogous: #51ec7a, #51c2ec
- Triadic: #c751ec, #ecc751
- Split-complementary: #ec51c2, #ec7a51
- Tetradic: #7a51ec, #ec5175, #c2ec51

## Colors that go with #51ecc7

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 #51ecc7: softer than #000 and cool enough to feel like part of the same palette. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Docker (https://brandsweets.com/colors/brands/docker-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #51ecc7 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), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #51ecc7: 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), Remix (https://brandsweets.com/colors/brands/remix-run), Salesforce (https://brandsweets.com/colors/brands/salesforce-com). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #51ecc7 in 9 real palettes, including Astro's brand system and Mint Chip, as the text colour against it. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Mint Chip (https://brandsweets.com/palettes/light#mint-chip), Blossom (https://brandsweets.com/palettes/light#blossom), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box). — https://brandsweets.com/colors/taupe
- **Hot Pink** #ff69b4 [harmony: complementary] — Hot Pink sits directly opposite #51ecc7 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
- **Plum** #dda0dd [harmony, pool: triadic] — Plum completes a triad with #51ecc7 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Blossom (https://brandsweets.com/palettes/light#blossom), Netlify (https://brandsweets.com/colors/brands/netlify-com). — https://brandsweets.com/colors/plum
- **Red** #ff0000 [pool] — Red is paired with #51ecc7 in 3 real palettes, including Gatorade's brand system and Mattel's brand system, as the supporting colour. Seen in: Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Mattel (https://brandsweets.com/colors/brands/mattel-com), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/red
- **Violet** #ee82ee [harmony: split] — Violet is a split-complement of #51ecc7: 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): 1.48:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0f856a (4.58:1); AA: background → #5c5c5c (4.51:1); AAA: text → #0b6550 (7.02:1); AAA: background → #3d3d3d (7.33:1)
- On black (#000000): 14.17:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Astro** — accent #4bf3c8 (Δ 1.901) — https://brandsweets.com/colors/brands/astro-build

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/51ecc7-a2bebb-d459b1-1f2a2d-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: "#51ecc7" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.