# #4efdf7

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

## Values

- Hex: `#4efdf7`
- RGB: rgb(78, 253, 247)
- HSL: hsl(178, 98%, 65%)
- OKLCH: oklch(0.906 0.139 191.6)
- Relative luminance: 0.7859
- Nearest named color: aqua (#00ffff, Δ 1.768) — https://brandsweets.com/colors/aqua
- Moods: vivid
- Page: https://brandsweets.com/colors/4efdf7

## Tints & shades

- Tints (toward white): #5dfdf8, #72fef9, #81fefa, #90fefa, #a4fefb, #b3fefc, #c2fefc, #d2fffd, #e6fffe, #f5ffff
- Shades (toward black): #30fdf6, #12fdf5, #02ede5, #02cfc8, #02b1ab, #018d89, #016f6b, #01514e, #013231, #001414

## Harmonies

- Complementary: #fd4e54
- Analogous: #4efda0, #4eacfd
- Triadic: #f74efd, #fdf74e
- Split-complementary: #fd4eac, #fda04e
- Tetradic: #a04efd, #fd4e54, #acfd4e

## Colors that go with #4efdf7

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 #4efdf7: softer than #000 and cool enough to feel like part of the same palette. Seen in: Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), UEFA (https://brandsweets.com/colors/brands/uefa-com), 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 #4efdf7'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), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #4efdf7 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 #4efdf7 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 #4efdf7 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 #4efdf7: 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 #4efdf7: 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 #4efdf7: 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): 1.26:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #01837f (4.61:1); AA: background → #666666 (4.57:1); AAA: text → #01605d (7.41:1); AAA: background → #4a4a4a (7.05:1)
- On black (#000000): 16.72:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Bluesky Social** — accent #00ffff (Δ 1.768) — 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/4efdf7-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: "#4efdf7" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.