# #831b1b

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

## Values

- Hex: `#831b1b`
- RGB: rgb(131, 27, 27)
- HSL: hsl(0, 66%, 31%)
- OKLCH: oklch(0.401 0.139 26.2)
- Relative luminance: 0.0569
- Nearest named color: Bloodthirsty (#880011, Δ 2.201) — https://brandsweets.com/colors/bloodthirsty
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/831b1b

## Tints & shades

- Tints (toward white): #a12121, #ba2626, #d53030, #db4d4d, #e16b6b, #e68484, #eca2a2, #f2c0c0, #f7d9d9, #fdf7f7
- Shades (toward black): #771818, #6e1717, #611414, #551111, #4c1010, #3f0d0d, #330a0a, #260808, #1e0606, #110303

## Harmonies

- Complementary: #1b8383
- Analogous: #831b4f, #834f1b
- Triadic: #1b831b, #1b1b83
- Split-complementary: #1b834f, #1b4f83
- Tetradic: #4f831b, #1b8383, #4f1b83

## Colors that go with #831b1b

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

- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #831b1b 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). — https://brandsweets.com/colors/teal
- **Crimson** #dc143c [pool] — Crimson is paired with #831b1b in 4 real palettes, including State Farm's brand system and M&M's's brand system, as the lead colour. Seen in: State Farm (https://brandsweets.com/colors/brands/statefarm-com), M&M's (https://brandsweets.com/colors/brands/mms-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Burger King (https://brandsweets.com/colors/brands/bk-com). — https://brandsweets.com/colors/crimson
- **Slate Gray** #708090 [pool] — 4 real palettes, including Bookshop and Typewriter put Slate Gray beside #831b1b, as the supporting colour. Seen in: Bookshop (https://brandsweets.com/palettes/editorial#bookshop), Typewriter (https://brandsweets.com/palettes/editorial#typewriter), Sepia Mono (https://brandsweets.com/palettes/warm#sepia-mono), Newsprint (https://brandsweets.com/palettes/editorial#newsprint). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #831b1b in 10 real palettes, including Bookshop and Cider, as that palette's text colour. Seen in: Bookshop (https://brandsweets.com/palettes/editorial#bookshop), Cider (https://brandsweets.com/palettes/warm#cider), Trader Joe's (https://brandsweets.com/colors/brands/traderjoes-com), Chipotle (https://brandsweets.com/colors/brands/chipotle-com). — https://brandsweets.com/colors/taupe
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #831b1b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/steelblue
- **Champagne** #f7e7ce [pool] — 3 real palettes, including Bramble and Darkroom put Champagne beside #831b1b, as the text colour against it. Seen in: 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
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #831b1b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [pool] — Designers have shipped Copper with #831b1b: 3 real palettes, including Bramble and Chipotle's brand system, as the supporting colour. Seen in: Bramble (https://brandsweets.com/palettes/muted#bramble), Chipotle (https://brandsweets.com/colors/brands/chipotle-com), Bakery (https://brandsweets.com/palettes/warm#bakery). — https://brandsweets.com/colors/copper

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

- On white (#ffffff): 9.82:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.14:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #d73c3c (4.6:1); AA: background → #b0b0b0 (4.53:1); AAA: text → #e37878 (7.22:1); AAA: background → #dbdbdb (7.1:1)

## Brands using this color

- **Reebok** — secondary #812323 (Δ 1.219) — https://brandsweets.com/colors/brands/reebok-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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/831b1b-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: "#831b1b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.