# #4299eb

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

## Values

- Hex: `#4299eb`
- RGB: rgb(66, 153, 235)
- HSL: hsl(209, 81%, 59%)
- OKLCH: oklch(0.668 0.148 249.9)
- Relative luminance: 0.2994
- Nearest named color: Fresh Blue of Bel Air (#069af3, Δ 2.401) — https://brandsweets.com/colors/fresh-blue-of-bel-air
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/4299eb

## Tints & shades

- Tints (toward white): #54a3ed, #67adef, #79b7f1, #8cc1f3, #9ecbf5, #acd2f6, #bedcf8, #d1e6fa, #e3f0fc, #f6fafe
- Shades (toward black): #2b8de9, #177ede, #1571c6, #1261ab, #105494, #0d4478, #0a3761, #072745, #051a2e, #020a12

## Harmonies

- Complementary: #eb9442
- Analogous: #42ebe8, #4245eb
- Triadic: #eb4299, #99eb42
- Split-complementary: #eb4245, #ebe842
- Tetradic: #e842eb, #eb9442, #45eb42

## Colors that go with #4299eb

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 #4299eb: 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), Lido (https://brandsweets.com/palettes/vivid#lido), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue). — https://brandsweets.com/colors/charcoal
- **Medium Sea Green** #3cb371 [harmony, pool: triadic] — Medium Sea Green completes a triad with #4299eb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Terminal (https://brandsweets.com/palettes/technical#terminal), Olympics (https://brandsweets.com/colors/brands/olympics-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/mediumseagreen
- **Peru** #cd853f [harmony, pool: complementary] — Peru sits directly opposite #4299eb on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Guinness (https://brandsweets.com/colors/brands/guinness-com). — https://brandsweets.com/colors/peru
- **Amber** #ffbf00 [pool] — Amber is paired with #4299eb in 10 real palettes, including Heatwave and Google's brand system, as the supporting colour. Seen in: Heatwave (https://brandsweets.com/palettes/warm#heatwave), Google (https://brandsweets.com/colors/brands/google-com), NBA (https://brandsweets.com/colors/brands/nba-com), Salesforce (https://brandsweets.com/colors/brands/salesforce-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 11 real palettes, including Unity's brand system and Qualcomm's brand system put Blue beside #4299eb, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Cargo (https://brandsweets.com/colors/brands/cargo-site). — https://brandsweets.com/colors/blue
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #4299eb in 4 real palettes, including Elastic's brand system and Learning App, as the lead colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/darkorange
- **Denim** #1560bd [pool] — Designers have shipped Denim with #4299eb: 12 real palettes, including Apple's brand system and Gopro's brand system, as the accent. Seen in: Apple (https://brandsweets.com/colors/brands/apple-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #4299eb in 5 real palettes, including Liquid Death's brand system and Disney's brand system, as the accent. Seen in: Liquid Death (https://brandsweets.com/colors/brands/liquiddeath-com), Disney (https://brandsweets.com/colors/brands/disney-com), Chevrolet (https://brandsweets.com/colors/brands/chevrolet-com), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark). — https://brandsweets.com/colors/goldenrod

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

- On white (#ffffff): 3.01:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1676d0 (4.63:1); AA: background → #2e2e2e (4.52:1); AAA: text → #10599d (7.15:1)
- On black (#000000): 6.99:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #469cec (7.23:1)

## 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/4299eb-9cacc4-df4e4e-1f212d-e9f1f1?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: "#4299eb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.