# #51fbd3

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

## Values

- Hex: `#51fbd3`
- RGB: rgb(81, 251, 211)
- HSL: hsl(166, 96%, 65%)
- OKLCH: oklch(0.892 0.149 173.6)
- Relative luminance: 0.7545
- Nearest named color: aquamarine (#7fffd4, Δ 3.225) — https://brandsweets.com/colors/aquamarine
- Moods: vivid
- Page: https://brandsweets.com/colors/51fbd3

## Tints & shades

- Tints (toward white): #5ffcd7, #73fcdc, #82fce0, #91fde4, #a5fde9, #b4fdec, #c3fef0, #d2fef4, #e6fef9, #f5fffd
- Shades (toward black): #32fbcc, #14fac5, #05ebb5, #04cd9e, #04af87, #038c6c, #026e55, #02503e, #013227, #00140f

## Harmonies

- Complementary: #fb5078
- Analogous: #50fb7e, #50cefb
- Triadic: #d350fb, #fbd350
- Split-complementary: #fb50ce, #fb7e50
- Tetradic: #7e50fb, #fb5078, #cefb50

## Colors that go with #51fbd3

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Crimson** #dc143c [pool] — Crimson is paired with #51fbd3 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 #51fbd3: 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 #51fbd3 in 5 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), Macaron (https://brandsweets.com/palettes/light#macaron), 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com). — https://brandsweets.com/colors/taupe
- **Hot Pink** #ff69b4 [harmony: complementary] — Hot Pink sits directly opposite #51fbd3 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
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #51fbd3: softer than #000 and cool enough to feel like part of the same palette. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/charcoal
- **Plum** #dda0dd [harmony, pool: triadic] — Plum completes a triad with #51fbd3 — 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). — https://brandsweets.com/colors/plum
- **Violet** #ee82ee [harmony: split] — Violet is a split-complement of #51fbd3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/violet
- **Light Coral** #f08080 [harmony: split] — Light Coral is a split-complement of #51fbd3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/lightcoral

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

- On white (#ffffff): 1.31:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #038264 (4.79:1); AA: background → #636363 (4.6:1); AAA: text → #02644d (7.16:1); AAA: background → #474747 (7.12:1)
- On black (#000000): 16.09:1 — 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/51fbd3-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: "#51fbd3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.