# #5bb5f5

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

## Values

- Hex: `#5bb5f5`
- RGB: rgb(91, 181, 245)
- HSL: hsl(205, 89%, 66%)
- OKLCH: oklch(0.744 0.127 242.1)
- Relative luminance: 0.4186
- Nearest named color: Cerulean (#55aaee, Δ 3.1) — https://brandsweets.com/colors/cerulean
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/5bb5f5

## Tints & shades

- Tints (toward white): #6abcf6, #78c2f7, #8bcbf8, #9ad1f9, #a8d8fa, #b7defb, #c5e5fc, #d8eefd, #e7f4fe, #f5fbfe
- Shades (toward black): #3ea8f4, #219bf2, #0d8ae3, #0c78c6, #0a66a9, #08558c, #06436f, #042f4d, #031d30, #010c13

## Harmonies

- Complementary: #f59b5b
- Analogous: #5bf5e9, #5b68f5
- Triadic: #f55bb5, #b5f55b
- Split-complementary: #f55b68, #f5e95b
- Tetradic: #e95bf5, #f59b5b, #68f55b

## Colors that go with #5bb5f5

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 #5bb5f5: softer than #000 and cool enough to feel like part of the same palette. Seen in: Blizzard (https://brandsweets.com/colors/brands/blizzard-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Mercury (https://brandsweets.com/colors/brands/mercury-com). — https://brandsweets.com/colors/charcoal
- **Dark Orange** #ff8c00 [harmony, pool: complementary] — Dark Orange sits directly opposite #5bb5f5 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Elastic (https://brandsweets.com/colors/brands/elastic-co), PayPal (https://brandsweets.com/colors/brands/paypal-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/darkorange
- **Amber** #ffbf00 [pool] — Amber is paired with #5bb5f5 in 5 real palettes, including Blueprint and NBA's brand system, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), NBA (https://brandsweets.com/colors/brands/nba-com), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 5 real palettes, including Warp's brand system and Canva's brand system put Blue beside #5bb5f5, as the supporting colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/blue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #5bb5f5: 7 real palettes, including Venmo's brand system and Coca-Cola's brand system, as the accent. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Apple (https://brandsweets.com/colors/brands/apple-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #5bb5f5: 4 real palettes, including Venmo's brand system and Figma's brand system, as the lead colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Figma (https://brandsweets.com/colors/brands/figma), Patreon (https://brandsweets.com/colors/brands/patreon-com), Opensea (https://brandsweets.com/colors/brands/opensea-io). — https://brandsweets.com/colors/dodgerblue
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #5bb5f5 in 4 real palettes, including Terminal and Telehealth, as the lead colour. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/mediumseagreen
- **Midnight Blue** #191970 [pool] — 9 real palettes, including Blue Mono and Kraken's brand system put Midnight Blue beside #5bb5f5, as the text colour against it. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Kraken (https://brandsweets.com/colors/brands/kraken-com), Telehealth (https://brandsweets.com/palettes/modern#telehealth), First Snow (https://brandsweets.com/palettes/cool#first-snow). — https://brandsweets.com/colors/midnightblue

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

- On white (#ffffff): 2.24:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0c78c6 (4.65:1); AA: background → #404040 (4.63:1); AAA: text → #095b95 (7.14:1); AAA: background → #212121 (7.19:1)
- On black (#000000): 9.37:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Mistral AI** — primary #54b4fc (Δ 1.223) — https://brandsweets.com/colors/brands/mistral-ai
- **Midjourney** — secondary #63b3ed (Δ 1.229) — https://brandsweets.com/colors/brands/midjourney-com
- **Astro** — secondary #54b9ff (Δ 1.577) — https://brandsweets.com/colors/brands/astro-build
- **Venmo** — secondary #4bb4ff (Δ 1.868) — https://brandsweets.com/colors/brands/venmo-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/5bb5f5-9cafc4-df4e58-1f212d-e9f1f0?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: "#5bb5f5" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.