# #40fcf6

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

## Values

- Hex: `#40fcf6`
- RGB: rgb(64, 252, 246)
- HSL: hsl(178, 97%, 62%)
- OKLCH: oklch(0.901 0.143 191.6)
- Relative luminance: 0.7736
- Nearest named color: Arctic Water (#00fcfc, Δ 1.328) — https://brandsweets.com/colors/arctic-water
- Moods: vivid
- Page: https://brandsweets.com/colors/40fcf6

## Tints & shades

- Tints (toward white): #54fcf7, #63fdf8, #77fdf8, #86fdf9, #9bfdfa, #affefb, #befefc, #d2fefd, #e1fffe, #f5ffff
- Shades (toward black): #22fcf4, #04fbf3, #03e2db, #03c4bd, #03a6a0, #028883, #026966, #01504e, #013231, #001413

## Harmonies

- Complementary: #fc4046
- Analogous: #40fc98, #40a4fc
- Triadic: #f640fc, #fcf640
- Split-complementary: #fc40a4, #fc9840
- Tetradic: #9840fc, #fc4046, #a4fc40

## Colors that go with #40fcf6

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 #40fcf6: softer than #000 and cool enough to feel like part of the same palette. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Boeing (https://brandsweets.com/colors/brands/boeing-com), Canopy (https://brandsweets.com/palettes/cool#canopy). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: analogous] — Deep Sky Blue is #40fcf6's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #40fcf6 in 6 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), Nursery (https://brandsweets.com/palettes/light#nursery). — https://brandsweets.com/colors/taupe
- **Light Coral** #f08080 [harmony: complementary] — Light Coral sits directly opposite #40fcf6 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/lightcoral
- **Crimson** #dc143c [pool] — Crimson is paired with #40fcf6 in 3 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). — https://brandsweets.com/colors/crimson
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #40fcf6: 3 real palettes, including Astro's brand system and Glacier, as the lead colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Glacier (https://brandsweets.com/palettes/cool#glacier), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/steelblue
- **Coral** #ff7f50 [harmony: split] — Coral is a split-complement of #40fcf6: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/coral
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #40fcf6: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink

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

- On white (#ffffff): 1.27:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #02837e (4.62:1); AA: background → #666666 (4.5:1); AAA: text → #026461 (7:1); AAA: background → #474747 (7.29:1)
- On black (#000000): 16.47:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Bluesky Social** — accent #00ffff (Δ 1.462) — https://brandsweets.com/colors/brands/bsky-app

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/40fcf6-a2bcbe-d45999-1f282d-e9f1ed?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: "#40fcf6" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.