# #4ff3dd

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

## Values

- Hex: `#4ff3dd`
- RGB: rgb(79, 243, 221)
- HSL: hsl(172, 87%, 63%)
- OKLCH: oklch(0.875 0.137 182.3)
- Relative luminance: 0.7098
- Nearest named color: Frozen Boubble (#00eedd, Δ 2.61) — https://brandsweets.com/colors/frozen-boubble
- Moods: vivid
- Page: https://brandsweets.com/colors/4ff3dd

## Tints & shades

- Tints (toward white): #62f4e1, #70f5e3, #83f6e7, #91f7ea, #a4f9ed, #b3faf0, #c6fbf4, #d4fcf7, #e7fdfa, #f5fefd
- Shades (toward black): #32f1d7, #15efd2, #0fd7bc, #0dbaa3, #0ba28e, #098675, #07695c, #054c43, #03302a, #011311

## Harmonies

- Complementary: #f34f64
- Analogous: #4ff38b, #4fb7f3
- Triadic: #dd4ff3, #f3dd4f
- Split-complementary: #f34fb7, #f38b4f
- Tetradic: #8b4ff3, #f34f64, #b7f34f

## Colors that go with #4ff3dd

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 #4ff3dd: 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), UEFA (https://brandsweets.com/colors/brands/uefa-com), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #4ff3dd: 5 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), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Remix (https://brandsweets.com/colors/brands/remix-run). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #4ff3dd in 7 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), Macaron (https://brandsweets.com/palettes/light#macaron). — https://brandsweets.com/colors/taupe
- **Light Coral** #f08080 [harmony: complementary] — Light Coral sits directly opposite #4ff3dd 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 #4ff3dd 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
- **Plum** #dda0dd [harmony, pool: triadic] — Plum completes a triad with #4ff3dd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Netlify (https://brandsweets.com/colors/brands/netlify-com), Blossom (https://brandsweets.com/palettes/light#blossom). — https://brandsweets.com/colors/plum
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #4ff3dd: 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
- **Salmon** #fa8072 [harmony: split] — Salmon is a split-complement of #4ff3dd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/salmon

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

- On white (#ffffff): 1.38:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #098171 (4.78:1); AA: background → #5e5e5e (4.69:1); AAA: text → #076458 (7.06:1); AAA: background → #424242 (7.27:1)
- On black (#000000): 15.2:1 — 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/4ff3dd-a2bebe-d459a5-1f292d-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: "#4ff3dd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.