# #51f5bc

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

## Values

- Hex: `#51f5bc`
- RGB: rgb(81, 245, 188)
- HSL: hsl(159, 89%, 64%)
- OKLCH: oklch(0.871 0.158 165.7)
- Relative luminance: 0.7068
- Nearest named color: Jittery Jade (#77eebb, Δ 2.788) — https://brandsweets.com/colors/jittery-jade
- Moods: vivid
- Page: https://brandsweets.com/colors/51f5bc

## Tints & shades

- Tints (toward white): #60f6c1, #73f7c9, #82f8ce, #95f9d6, #a3fadb, #b2fbe1, #c5fce9, #d4fcee, #e7fef6, #f5fefb
- Shades (toward black): #35f3b0, #18f2a5, #0dde95, #0bc181, #0aa46e, #08875a, #066a47, #044d34, #033020, #01130d

## Harmonies

- Complementary: #f5518b
- Analogous: #51f56a, #51dcf5
- Triadic: #bc51f5, #f5bc51
- Split-complementary: #f551dc, #f56a51
- Tetradic: #6a51f5, #f5518b, #dcf551

## Colors that go with #51f5bc

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 #51f5bc: 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). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #51f5bc in 4 real palettes, including Formula 1's brand system and Wise's brand system, as the supporting colour. Seen in: Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Wise (https://brandsweets.com/colors/brands/wise-com), Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Taupe** #483c32 [pool] — Taupe is paired with #51f5bc in 5 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), Macaron (https://brandsweets.com/palettes/light#macaron). — https://brandsweets.com/colors/taupe
- **Hot Pink** #ff69b4 [harmony: complementary] — Hot Pink sits directly opposite #51f5bc 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 #51f5bc: 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
- **Light Coral** #f08080 [harmony: split] — Light Coral is a split-complement of #51f5bc: 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 #51f5bc: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/violet
- **Hunter Green** #355e3b [pool] — Hunter Green is paired with #51f5bc in two real palettes: Canopy and Neon's brand system, as the lead colour. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Neon (https://brandsweets.com/colors/brands/neon-tech). — https://brandsweets.com/colors/hunter-green

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

- On white (#ffffff): 1.39:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #08875a (4.54:1); AA: background → #5e5e5e (4.67:1); AAA: text → #066544 (7.11:1); AAA: background → #424242 (7.24:1)
- On black (#000000): 15.14:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Astro** — accent #4bf3c8 (Δ 1.866) — 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/51f5bc-a2beb8-d459c0-1f2c2d-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: "#51f5bc" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.