# #370d01

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

## Values

- Hex: `#370d01`
- RGB: rgb(55, 13, 1)
- HSL: hsl(13, 96%, 11%)
- OKLCH: oklch(0.23 0.071 39)
- Relative luminance: 0.011
- Nearest named color: Black Chocolate (#441100, Δ 3.456) — https://brandsweets.com/colors/black-chocolate
- Moods: warm, vivid, dark, playful, bold, luxury
- Page: https://brandsweets.com/colors/370d01

## Tints & shades

- Tints (toward white): #641702, #8c2103, #b92b04, #e63505, #fa4e1e, #fb6d46, #fc9173, #fdb4a0, #fed4c8, #fff7f5
- Shades (toward black): #320c01, #320c01, #2d0a01, #280901, #280901, #230801, #1e0701, #190601, #190601, #140500

## Harmonies

- Complementary: #012b37
- Analogous: #370110, #372801
- Triadic: #01370d, #0d0137
- Split-complementary: #013728, #011037
- Tetradic: #103701, #012b37, #280137

## Colors that go with #370d01

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 #370d01: 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), Logitech (https://brandsweets.com/colors/brands/logitech-com), N26 (https://brandsweets.com/colors/brands/n26-com), HubSpot (https://brandsweets.com/colors/brands/hubspot-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: analogous] — Crimson is #370d01's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Tequila Sunrise (https://brandsweets.com/palettes/vivid#tequila-sunrise), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), New Balance (https://brandsweets.com/colors/brands/newbalance-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/crimson
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #370d01 — 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), Next.js (https://brandsweets.com/colors/brands/nextjs-org), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: analogous] — Sienna is #370d01'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
- **Slate Blue** #6a5acd [harmony, pool: triadic] — Slate Blue completes a triad with #370d01 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Superhuman (https://brandsweets.com/colors/brands/superhuman-com), GitLab (https://brandsweets.com/colors/brands/gitlab), Calm (https://brandsweets.com/colors/brands/calm-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/slateblue
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #370d01: 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), American Express (https://brandsweets.com/colors/brands/americanexpress-com). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #370d01 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), Gusto (https://brandsweets.com/colors/brands/gusto-com), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #370d01 in 18 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

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

- On white (#ffffff): 17.21:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.22:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #dc3304 (4.52:1); AA: background → #858585 (4.66:1); AAA: text → #fb653c (7.03:1); AAA: background → #a6a6a6 (7.07:1)

## 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/370d01-c4a99c-62cbaf-2d281f-f1e9eb?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: "#370d01" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.