# #39cff9

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

## Values

- Hex: `#39cff9`
- RGB: rgb(57, 207, 249)
- HSL: hsl(193, 94%, 60%)
- OKLCH: oklch(0.796 0.134 221.6)
- Relative luminance: 0.5234
- Nearest named color: Blue Mana (#68c2f5, Δ 4.035) — https://brandsweets.com/colors/blue-mana
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/39cff9

## Tints & shades

- Tints (toward white): #4dd4f9, #61d9fa, #70dcfb, #83e1fb, #97e6fc, #abebfc, #bff0fd, #cef3fd, #e1f8fe, #f5fdff
- Shades (toward black): #1bc8f8, #07c0f2, #07a8d5, #0695bc, #057d9e, #046681, #035268, #023b4a, #022731, #011014

## Harmonies

- Complementary: #f96339
- Analogous: #39f9c3, #396ff9
- Triadic: #f939cf, #cff939
- Split-complementary: #f9396f, #f9c339
- Tetradic: #c339f9, #f96339, #6ff939

## Colors that go with #39cff9

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 #39cff9: softer than #000 and cool enough to feel like part of the same palette. Seen in: Vimeo (https://brandsweets.com/colors/brands/vimeo-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Boeing (https://brandsweets.com/colors/brands/boeing-com), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #39cff9 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), JBL (https://brandsweets.com/colors/brands/jbl-com). — https://brandsweets.com/colors/crimson
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #39cff9: 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
- **Midnight Blue** #191970 [pool] — 5 real palettes, including Telehealth and Kraken's brand system put Midnight Blue beside #39cff9, as the text colour against it. Seen in: Telehealth (https://brandsweets.com/palettes/modern#telehealth), Kraken (https://brandsweets.com/colors/brands/kraken-com), Confluent (https://brandsweets.com/colors/brands/confluent-io), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono). — https://brandsweets.com/colors/midnightblue
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #39cff9: 4 real palettes, including Audible's brand system and Calendly's brand system, as the supporting colour. Seen in: Audible (https://brandsweets.com/colors/brands/audible-com), Calendly (https://brandsweets.com/colors/brands/calendly-com), Steam (https://brandsweets.com/colors/brands/steampowered-com), First Snow (https://brandsweets.com/palettes/cool#first-snow). — https://brandsweets.com/colors/powderblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #39cff9 in 6 real palettes, including 1password's brand system and Telehealth, as the accent. Seen in: 1password (https://brandsweets.com/colors/brands/1password-com), Telehealth (https://brandsweets.com/palettes/modern#telehealth), NBA (https://brandsweets.com/colors/brands/nba-com), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/royalblue
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #39cff9: 4 real palettes, including Astro's brand system and Deep Water, as the lead colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Glacier (https://brandsweets.com/palettes/cool#glacier), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/steelblue
- **Coral** #ff7f50 [harmony: complementary] — Coral sits directly opposite #39cff9 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/coral

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

- On white (#ffffff): 1.83:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #057d9e (4.74:1); AA: background → #4d4d4d (4.62:1); AAA: text → #045e77 (7.31:1); AAA: background → #303030 (7.21:1)
- On black (#000000): 11.47:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Twilio** — primary #3acefa (Δ 0.347) — https://brandsweets.com/colors/brands/twilio-com
- **Twilio** — secondary #3acefa (Δ 0.347) — https://brandsweets.com/colors/brands/twilio-com
- **Vimeo** — primary #14d3fb (Δ 1.278) — https://brandsweets.com/colors/brands/vimeo-com

## 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/39cff9-a2b5be-df4e75-1f242d-e9f1ef?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: "#39cff9" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.