# #4bb5f7

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

## Values

- Hex: `#4bb5f7`
- RGB: rgb(75, 181, 247)
- HSL: hsl(203, 91%, 63%)
- OKLCH: oklch(0.74 0.136 239.8)
- Relative luminance: 0.4126
- Nearest named color: Cerulean (#55aaee, Δ 2.925) — https://brandsweets.com/colors/cerulean
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/4bb5f7

## Tints & shades

- Tints (toward white): #5ebdf7, #6dc3f8, #80cbf9, #8fd1fa, #a2d9fb, #b1dffb, #c5e7fc, #d3edfd, #e7f5fe, #f5fbff
- Shades (toward black): #2ea9f5, #109df4, #0a8bdb, #0979be, #0869a6, #065788, #05446b, #04314e, #021f31, #010c13

## Harmonies

- Complementary: #f78d4b
- Analogous: #4bf7e2, #4b5ff7
- Triadic: #f74bb5, #b5f74b
- Split-complementary: #f74b5f, #f7e24b
- Tetradic: #e24bf7, #f78d4b, #5ff74b

## Colors that go with #4bb5f7

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 #4bb5f7: 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 #4bb5f7 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 #4bb5f7 in 5 real palettes, including Blueprint and Salesforce's brand system, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), NBA (https://brandsweets.com/colors/brands/nba-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 4 real palettes, including Warp's brand system and Canva's brand system put Blue beside #4bb5f7, 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 #4bb5f7: 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), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #4bb5f7: 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 #4bb5f7 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 Kraken's brand system and Blue Mono put Midnight Blue beside #4bb5f7, as the lead colour. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Confluent (https://brandsweets.com/colors/brands/confluent-io), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/midnightblue

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

- On white (#ffffff): 2.27:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0979be (4.68:1); AA: background → #404040 (4.57:1); AAA: text → #075d92 (7.02:1); AAA: background → #212121 (7.09:1)
- On black (#000000): 9.25:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Mistral AI** — primary #54b4fc (Δ 1.075) — https://brandsweets.com/colors/brands/mistral-ai
- **Venmo** — secondary #4bb4ff (Δ 1.283) — https://brandsweets.com/colors/brands/venmo-com
- **Astro** — secondary #54b9ff (Δ 1.672) — https://brandsweets.com/colors/brands/astro-build

## 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/4bb5f7-9cb0c4-df4e5d-1f222d-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: "#4bb5f7" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.