# #3fcfd9

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#3fcfd9`
- RGB: rgb(63, 207, 217)
- HSL: hsl(184, 67%, 55%)
- OKLCH: oklch(0.784 0.119 201.9)
- Relative luminance: 0.5069
- Nearest named color: darkturquoise (#00ced1, Δ 2.113) — https://brandsweets.com/colors/darkturquoise
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/3fcfd9

## Tints & shades

- Tints (toward white): #50d3dc, #66d9e1, #77dde4, #88e1e7, #9de6ec, #aeebef, #bfeff2, #d0f3f6, #e5f9fa, #f6fdfd
- Shades (toward black): #2acad5, #26b5c0, #22a1aa, #1d8d95, #197980, #146166, #104d51, #0c383c, #082426, #031011

## Harmonies

- Complementary: #d94a3f
- Analogous: #3fd997, #3f82d9
- Triadic: #d93fcf, #cfd93f
- Split-complementary: #d93f82, #d9973f
- Tetradic: #973fd9, #d94a3f, #82d93f

## Colors that go with #3fcfd9

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 #3fcfd9: softer than #000 and cool enough to feel like part of the same palette. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Coastal (https://brandsweets.com/palettes/cool#coastal), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/charcoal
- **Light Coral** #f08080 [harmony, pool: complementary] — Light Coral sits directly opposite #3fcfd9 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/lightcoral
- **Crimson** #dc143c [pool] — Crimson is paired with #3fcfd9 in 4 real palettes, including Riot Games's brand system and Tiffany & Co.'s brand system, as the supporting colour. Seen in: Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Formula 1 (https://brandsweets.com/colors/brands/formula1-com). — https://brandsweets.com/colors/crimson
- **Dark Orange** #ff8c00 [harmony, pool: split] — Dark Orange is a split-complement of #3fcfd9: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: PayPal (https://brandsweets.com/colors/brands/paypal-com), Learning App (https://brandsweets.com/palettes/playful#learning-app), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/darkorange
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #3fcfd9: 4 real palettes, including Patreon's brand system and Opensea's brand system, as the accent. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Opensea (https://brandsweets.com/colors/brands/opensea-io), Figma (https://brandsweets.com/colors/brands/figma), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/dodgerblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #3fcfd9 in 7 real palettes, including Telehealth and Docker's brand system, as the lead colour. Seen in: Telehealth (https://brandsweets.com/palettes/modern#telehealth), Docker (https://brandsweets.com/colors/brands/docker-com), 1password (https://brandsweets.com/colors/brands/1password-com), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/royalblue
- **Slate Gray** #708090 [pool] — 5 real palettes, including Still Water and Ledger Dark put Slate Gray beside #3fcfd9, as the lead colour. Seen in: Still Water (https://brandsweets.com/palettes/cool#still-water), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe). — https://brandsweets.com/colors/slategray
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #3fcfd9: 4 real palettes, including Deep Water and Glacier, as the supporting colour. Seen in: Deep Water (https://brandsweets.com/palettes/dark#deep-water), Glacier (https://brandsweets.com/palettes/cool#glacier), Astro (https://brandsweets.com/colors/brands/astro-build), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/steelblue

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

- On white (#ffffff): 1.89:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #1b8188 (4.62:1); AA: background → #4a4a4a (4.7:1); AAA: text → #146166 (7.16:1); AAA: background → #303030 (7:1)
- On black (#000000): 11.14:1 — AA pass, AA-large pass, AAA pass

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3fcfd9-a2b9be-df4e8a-1f262d-e9f1ee?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: "#3fcfd9" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.