# #3f381d

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

## Values

- Hex: `#3f381d`
- RGB: rgb(63, 56, 29)
- HSL: hsl(48, 37%, 18%)
- OKLCH: oklch(0.341 0.043 95.3)
- Relative luminance: 0.0397
- Nearest named color: Graphite (#383428, Δ 2.715) — https://brandsweets.com/colors/graphite
- Moods: warm, dark, luxury, bold
- Page: https://brandsweets.com/colors/3f381d

## Tints & shades

- Tints (toward white): #5b512a, #776a37, #938343, #af9c50, #bcac6c, #c8bc88, #d5cba4, #e2dbc0, #efebdc, #fcfbf8
- Shades (toward black): #3b351b, #342f18, #312c16, #2a2513, #262212, #231f10, #1c190d, #18160b, #111008, #0e0c06

## Harmonies

- Complementary: #1d243f
- Analogous: #3f271d, #353f1d
- Triadic: #1d3f38, #381d3f
- Split-complementary: #1d353f, #271d3f
- Tetradic: #1d3f27, #1d243f, #3f1d35

## Colors that go with #3f381d

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Dark Olive Green** #556b2f [harmony, pool: analogous] — Dark Olive Green is #3f381d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/darkolivegreen
- **Sienna** #a0522d [harmony, pool: analogous] — Sienna is #3f381d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Harvest (https://brandsweets.com/palettes/warm#harvest), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke). — https://brandsweets.com/colors/sienna
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #3f381d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Auth0 (https://brandsweets.com/colors/brands/auth0-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #3f381d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: N26 (https://brandsweets.com/colors/brands/n26-com), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Saffron (https://brandsweets.com/palettes/warm#saffron). — https://brandsweets.com/colors/teal
- **Slate Blue** #6a5acd [harmony, pool: complementary] — Slate Blue sits directly opposite #3f381d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Superhuman (https://brandsweets.com/colors/brands/superhuman-com), GitLab (https://brandsweets.com/colors/brands/gitlab). — https://brandsweets.com/colors/slateblue
- **Amber** #ffbf00 [pool] — Amber is paired with #3f381d in 6 real palettes, including McDonald's's brand system and Trailhead, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 10 real palettes, including Dunkin''s brand system and Minecraft's brand system put Blue beside #3f381d, as the supporting colour. Seen in: Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Headspace (https://brandsweets.com/colors/brands/headspace-com), Instacart (https://brandsweets.com/colors/brands/instacart-com). — https://brandsweets.com/colors/blue
- **Cream** #fffdd0 [role] — Cream is the surface #3f381d wants: a warm off-white that shares its undertone, so #3f381d reads softer on it than on pure white. — https://brandsweets.com/colors/cream

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

- On white (#ffffff): 11.7:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.79:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #85763d (4.66:1); AA: background → #a1a1a1 (4.53:1); AAA: text → #a8964d (7.13:1); AAA: background → #c9c9c9 (7.07:1)

## Fonts for this mood

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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3f381d-c4c09c-62aacb-2a2d1f-f1ece9?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: "#3f381d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.