# #42b1fa

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

## Values

- Hex: `#42b1fa`
- RGB: rgb(66, 177, 250)
- HSL: hsl(204, 95%, 62%)
- OKLCH: oklch(0.73 0.145 241.8)
- Relative luminance: 0.395
- Nearest named color: Cerulean (#55aaee, Δ 2.344) — https://brandsweets.com/colors/cerulean
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/42b1fa

## Tints & shades

- Tints (toward white): #56b9fb, #65bffb, #79c7fc, #88cdfc, #9cd6fc, #afdefd, #bee4fd, #d2ecfe, #e1f3fe, #f5fbff
- Shades (toward black): #24a4f9, #0698f9, #0689e0, #0576c2, #0464a4, #035286, #034068, #023150, #011e32, #010c14

## Harmonies

- Complementary: #fa8c42
- Analogous: #42fae8, #4254fa
- Triadic: #fa42b1, #b1fa42
- Split-complementary: #fa4254, #fae842
- Tetradic: #e842fa, #fa8c42, #54fa42

## Colors that go with #42b1fa

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 #42b1fa: 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), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/charcoal
- **Dark Orange** #ff8c00 [harmony, pool: complementary] — Dark Orange sits directly opposite #42b1fa 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 #42b1fa in 6 real palettes, including Salesforce's brand system and NBA's brand system, as the accent. Seen in: Salesforce (https://brandsweets.com/colors/brands/salesforce-com), NBA (https://brandsweets.com/colors/brands/nba-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), 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 Unity's brand system put Blue beside #42b1fa, as the supporting colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Unity (https://brandsweets.com/colors/brands/unity-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/blue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #42b1fa: 8 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), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/denim
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #42b1fa in 4 real palettes, including Terminal and Unity's brand system, as the lead colour. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal), Unity (https://brandsweets.com/colors/brands/unity-com), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/mediumseagreen
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Kraken's brand system and Blue Mono put Midnight Blue beside #42b1fa, 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), SoFi (https://brandsweets.com/colors/brands/sofi-com). — https://brandsweets.com/colors/midnightblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #42b1fa in 4 real palettes, including Figma's brand system and Cursor's brand system, as the lead colour. Seen in: Figma (https://brandsweets.com/colors/brands/figma), Cursor (https://brandsweets.com/colors/brands/cursor-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/orangered

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

- On white (#ffffff): 2.36:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0579c7 (4.6:1); AA: background → #3d3d3d (4.6:1); AAA: text → #045b95 (7.15:1); AAA: background → #1c1c1c (7.22:1)
- On black (#000000): 8.9:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Venmo** — secondary #4bb4ff (Δ 1.24) — https://brandsweets.com/colors/brands/venmo-com
- **Mistral AI** — primary #54b4fc (Δ 1.579) — https://brandsweets.com/colors/brands/mistral-ai
- **Remix** — secondary #59b0ff (Δ 1.815) — https://brandsweets.com/colors/brands/remix-run
- **Remix** — primary #2dacf9 (Δ 1.879) — https://brandsweets.com/colors/brands/remix-run
- **Salesforce** — primary #04b4fc (Δ 1.884) — https://brandsweets.com/colors/brands/salesforce-com
- **Render** — secondary #33acff (Δ 1.944) — https://brandsweets.com/colors/brands/render-com

## Curated palettes containing it

- **Learning App** (playful, vivid, friendly) — #58cc02, #1cb0f6, #ff9600, #ffffff, #1c1c1c — Green, blue and orange at full saturation: the gamified-learning look, where every color is a reward. — tool: https://brandsweets.com/palettes/new/58cc02-1cb0f6-ff9600-ffffff-1c1c1c — collection: https://brandsweets.com/palettes/playful

## 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/42b1fa-9cafc4-df4e5a-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: "#42b1fa" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.