# #b31e2d

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

## Values

- Hex: `#b31e2d`
- RGB: rgb(179, 30, 45)
- HSL: hsl(354, 71%, 41%)
- OKLCH: oklch(0.497 0.182 22.7)
- Relative luminance: 0.107
- Nearest named color: firebrick (#b22222, Δ 1.331) — https://brandsweets.com/colors/firebrick
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/b31e2d

## Tints & shades

- Tints (toward white): #cd2334, #dc2e3f, #e04857, #e4626f, #e97c87, #ed929b, #f1acb3, #f5c6cb, #f9dcdf, #fef6f7
- Shades (toward black): #a11b29, #941925, #831621, #71131d, #641119, #530e15, #410b11, #30080c, #230609, #110304

## Harmonies

- Complementary: #1eb3a4
- Analogous: #b31e77, #b35a1e
- Triadic: #2db31e, #1e2db3
- Split-complementary: #1eb35a, #1e77b3
- Tetradic: #77b31e, #1eb3a4, #5a1eb3

## Colors that go with #b31e2d

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

- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #b31e2d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Bose (https://brandsweets.com/colors/brands/bose-com), Chase (https://brandsweets.com/colors/brands/chase-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/royalblue
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #b31e2d: 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), Honda (https://brandsweets.com/colors/brands/honda-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #b31e2d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Redfin (https://brandsweets.com/colors/brands/redfin-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Saffron (https://brandsweets.com/palettes/warm#saffron). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #b31e2d in 5 real palettes, including Maple and Ember, as the accent. Seen in: Maple (https://brandsweets.com/palettes/warm#maple), Ember (https://brandsweets.com/palettes/bold#ember), Trailhead (https://brandsweets.com/palettes/warm#trailhead), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 4 real palettes, including Tim Hortons's brand system and Dunkin''s brand system put Blue beside #b31e2d, as the accent. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com), Doordash (https://brandsweets.com/colors/brands/doordash-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #b31e2d: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: IHG (https://brandsweets.com/colors/brands/ihg-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/charcoal
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #b31e2d: 4 real palettes, including MLB's brand system and Behance's brand system, as the accent. Seen in: MLB (https://brandsweets.com/colors/brands/mlb-com), Behance (https://brandsweets.com/colors/brands/behance-net), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Reebok (https://brandsweets.com/colors/brands/reebok-com). — https://brandsweets.com/colors/cobalt
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #b31e2d in 5 real palettes, including Olive Grove and Cider, as the lead colour. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Cider (https://brandsweets.com/palettes/warm#cider), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/darkolivegreen

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

- On white (#ffffff): 6.69:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #aa1d2b (7.19:1)
- On black (#000000): 3.14:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #dc2e3f (4.51:1); AA: background → #d4d4d4 (4.51:1); AAA: text → #e7737f (7.16:1)

## Brands using this color

- **Twilio** — accent #b10f23 (Δ 1.491) — https://brandsweets.com/colors/brands/twilio-com
- **Wendy's** — secondary #b0161f (Δ 1.575) — https://brandsweets.com/colors/brands/wendys-com
- **Tommy Hilfiger** — secondary #b9252d (Δ 1.674) — https://brandsweets.com/colors/brands/tommy-com

## Curated palettes containing it

- **Newsprint** (editorial, muted, warm) — #b91c1c, #78716c, #d97706, #f5f1ea, #1c1917 — Ink-black on warm paper with a single red — the broadsheet hierarchy that lets typography lead. — tool: https://brandsweets.com/palettes/new/b91c1c-78716c-d97706-f5f1ea-1c1917 — collection: https://brandsweets.com/palettes/editorial

## 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/b31e2d-c49d9c-62cb8e-2d241f-f1e9ee?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: "#b31e2d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.