# #420ce4

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

## Values

- Hex: `#420ce4`
- RGB: rgb(66, 12, 228)
- HSL: hsl(255, 90%, 47%)
- OKLCH: oklch(0.446 0.271 276.7)
- Relative luminance: 0.0702
- Nearest named color: Overdue Blue (#4400ff, Δ 4.258) — https://brandsweets.com/colors/overdue-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/420ce4

## Tints & shades

- Tints (toward white): #4e16f3, #602ff4, #7247f5, #855ff7, #9b7cf8, #ae94f9, #c0adfb, #d3c5fc, #e5ddfd, #f8f5fe
- Shades (toward black): #3c0bd0, #350ab8, #3009a5, #2a0891, #24077e, #1d0566, #180452, #12033f, #0b0227, #060113

## Harmonies

- Complementary: #aee40c
- Analogous: #0c42e4, #ae0ce4
- Triadic: #e4420c, #0ce442
- Split-complementary: #e4ae0c, #42e40c
- Tetradic: #e40c42, #aee40c, #0ce4ae

## Colors that go with #420ce4

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 #420ce4: softer than #000 and cool enough to feel like part of the same palette. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), HP (https://brandsweets.com/colors/brands/hp-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #420ce4: 8 real palettes, including Unilever's brand system and CVS's brand system, as the supporting colour. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Tesco (https://brandsweets.com/colors/brands/tesco-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #420ce4: 5 real palettes, including Qualcomm's brand system and Canva's brand system, as the supporting colour. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #420ce4 in 4 real palettes, including Dunkin''s brand system and Tim Hortons's brand system, as the accent. Seen in: Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Behance (https://brandsweets.com/colors/brands/behance-net), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #420ce4: 5 real palettes, including Unilever's brand system and Pixar's brand system, as the accent. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Activision (https://brandsweets.com/colors/brands/activision-com), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #420ce4: 6 real palettes, including Cargo's brand system and Readymag's brand system, as the lead colour. Seen in: Cargo (https://brandsweets.com/colors/brands/cargo-site), Readymag (https://brandsweets.com/colors/brands/readymag-com), Samsung (https://brandsweets.com/colors/brands/samsung-com), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 9 real palettes, including Monzo's brand system and Sketch's brand system put Midnight Blue beside #420ce4, as the lead colour. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Kraken (https://brandsweets.com/colors/brands/kraken-com), Penpot (https://brandsweets.com/colors/brands/penpot-app). — https://brandsweets.com/colors/midnightblue
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #420ce4 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Kia (https://brandsweets.com/colors/brands/kia-com), Intel (https://brandsweets.com/colors/brands/intel-com), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/seagreen

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

- On white (#ffffff): 8.73:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.4:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7e55f6 (4.52:1); AA: background → #bababa (4.5:1); AAA: text → #a386f9 (7.34:1); AAA: background → #e8e8e8 (7.13:1)

## 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/420ce4-ab9cc4-dfbd4e-291f2d-e9ebf1?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: "#420ce4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.