# #420101

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

## Values

- Hex: `#420101`
- RGB: rgb(66, 1, 1)
- HSL: hsl(0, 97%, 13%)
- OKLCH: oklch(0.239 0.096 28.8)
- Relative luminance: 0.0118
- Nearest named color: Lonely Chocolate (#4a0a00, Δ 2.87) — https://brandsweets.com/colors/lonely-chocolate
- Moods: warm, vivid, dark, playful, bold, luxury
- Page: https://brandsweets.com/colors/420101

## Tints & shades

- Tints (toward white): #6f0202, #970202, #c40303, #ec0404, #fc2222, #fc4a4a, #fd7777, #fea0a0, #fecdcd, #fff5f5
- Shades (toward black): #3c0101, #370101, #320101, #2d0101, #2d0101, #280101, #230101, #1e0000, #190000, #140000

## Harmonies

- Complementary: #014141
- Analogous: #410121, #412101
- Triadic: #014101, #010141
- Split-complementary: #014121, #012141
- Tetradic: #214101, #014141, #210141

## Colors that go with #420101

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 #420101: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Gusto (https://brandsweets.com/colors/brands/gusto-com), HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Logitech (https://brandsweets.com/colors/brands/logitech-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #420101 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Headspace (https://brandsweets.com/colors/brands/headspace-com), Signal (https://brandsweets.com/colors/brands/signal-org), Yahoo (https://brandsweets.com/colors/brands/yahoo-com), Spectrum (https://brandsweets.com/colors/brands/spectrum-com). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #420101 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Wellness (https://brandsweets.com/palettes/warm#wellness), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Next.js (https://brandsweets.com/colors/brands/nextjs-org), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: analogous] — Sienna is #420101's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Harvest (https://brandsweets.com/palettes/warm#harvest), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/sienna
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #420101: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Launch Orange (https://brandsweets.com/palettes/bold#launch-orange), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #420101 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Saffron (https://brandsweets.com/palettes/warm#saffron), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #420101 in 15 real palettes, including Maple and Heatwave, as the accent. Seen in: Maple (https://brandsweets.com/palettes/warm#maple), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 15 real palettes, including Tim Hortons's brand system and Headspace's brand system put Blue beside #420101, as the accent. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), Bumble (https://brandsweets.com/colors/brands/bumble-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 16.98:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.24:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #ec0404 (4.59:1); AA: background → #858585 (4.6:1); AAA: text → #fd6363 (7.14:1); AAA: background → #a8a8a8 (7.14:1)

## Brands using this color

- **Hershey's** — primary #3f000b (Δ 1.835) — https://brandsweets.com/colors/brands/hersheys-com

## 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/420101-c4a19c-62cb98-2d251f-f1e9ed?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: "#420101" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.