# #42003b

A color — warm, vivid, dark, playful, bold, luxury. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#42003b`
- RGB: rgb(66, 0, 59)
- HSL: hsl(306, 100%, 13%)
- OKLCH: oklch(0.261 0.117 333.6)
- Relative luminance: 0.0147
- Nearest named color: Romanic Scene (#3b0346, Δ 2.796) — https://brandsweets.com/colors/romanic-scene
- Moods: warm, vivid, dark, playful, bold, luxury
- Page: https://brandsweets.com/colors/42003b

## Tints & shades

- Tints (toward white): #700065, #99008a, #c700b3, #f000d8, #ff1fe9, #ff47ed, #ff75f1, #ff9ef5, #ffccfa, #fff5fe
- Shades (toward black): #3d0037, #380032, #33002e, #2e0029, #2e0029, #290025, #240020, #1f001c, #190017, #140012

## Harmonies

- Complementary: #004207
- Analogous: #280042, #42001b
- Triadic: #3c4200, #003c42
- Split-complementary: #1b4200, #004228
- Tetradic: #422800, #004207, #001b42

## Colors that go with #42003b

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 body-text near-black for #42003b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #42003b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Wellness (https://brandsweets.com/palettes/warm#wellness), Subaru (https://brandsweets.com/colors/brands/subaru-com), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #42003b in 4 real palettes, including Southwest Airlines's brand system and Wikipedia's brand system, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #42003b, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Monzo (https://brandsweets.com/colors/brands/monzo-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #42003b: 4 real palettes, including SoFi's brand system and Dusk, as the supporting colour. Seen in: SoFi (https://brandsweets.com/colors/brands/sofi-com), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 4 real palettes, including Allbirds's brand system and Bramble put Champagne beside #42003b, as the accent. Seen in: Allbirds (https://brandsweets.com/colors/brands/allbirds-com), Bramble (https://brandsweets.com/palettes/muted#bramble), Darkroom (https://brandsweets.com/palettes/muted#darkroom), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke). — https://brandsweets.com/colors/champagne
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #42003b: 4 real palettes, including Hershey's's brand system and Blue Mono, as the supporting colour. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Airtable (https://brandsweets.com/colors/brands/airtable-com), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #42003b: 6 real palettes, including Dusk and Chipotle's brand system, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Chipotle (https://brandsweets.com/colors/brands/chipotle-com), Wellness (https://brandsweets.com/palettes/warm#wellness), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/copper

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

- On white (#ffffff): 16.22:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.29:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #d600c1 (4.63:1); AA: background → #878787 (4.51:1); AAA: text → #ff38eb (7.02:1); AAA: background → #ababab (7.06:1)

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- playful: https://brandsweets.com/fonts/mood/playful
- bold: https://brandsweets.com/fonts/mood/bold
- luxury: https://brandsweets.com/fonts/mood/luxury

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/42003b-c19fb9-8acb62-2d1f26-eee9f1?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: "#42003b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.