# #b71f45

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

## Values

- Hex: `#b71f45`
- RGB: rgb(183, 31, 69)
- HSL: hsl(345, 71%, 42%)
- OKLCH: oklch(0.51 0.185 13.8)
- Relative luminance: 0.1148
- Nearest named color: Fancy Red Wine (#b40441, Δ 2.063) — https://brandsweets.com/colors/fancy-red-wine
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/b71f45

## Tints & shades

- Tints (toward white): #d1234f, #dc325d, #e14c71, #e46283, #e97c97, #ed96ac, #f1acbd, #f5c6d2, #f9dce3, #fef6f8
- Shades (toward black): #a61c3f, #941938, #871733, #76142c, #641126, #530e1f, #410b19, #340914, #23060d, #110307

## Harmonies

- Complementary: #1fb791
- Analogous: #b71f91, #b7451f
- Triadic: #45b71f, #1f45b7
- Split-complementary: #1fb745, #1f91b7
- Tetradic: #91b71f, #1fb791, #451fb7

## Colors that go with #b71f45

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 #b71f45 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Bose (https://brandsweets.com/colors/brands/bose-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #b71f45 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Redfin (https://brandsweets.com/colors/brands/redfin-com), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #b71f45 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 Dunkin''s brand system and Tim Hortons's brand system put Blue beside #b71f45, as the supporting colour. Seen in: Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-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 #b71f45: 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
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #b71f45 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
- **Denim** #1560bd [pool] — Designers have shipped Denim with #b71f45: 11 real palettes, including Chase's brand system and Nissan's brand system, as the lead colour. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Nissan (https://brandsweets.com/colors/brands/nissanusa-com), AT&T (https://brandsweets.com/colors/brands/att-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com). — https://brandsweets.com/colors/denim
- **Gold** #ffd700 [pool] — Gold shows up next to #b71f45 in 4 real palettes, including Garnet and Tabloid, as the accent. Seen in: Garnet (https://brandsweets.com/palettes/warm#garnet), Tabloid (https://brandsweets.com/palettes/editorial#tabloid), Lay's (https://brandsweets.com/colors/brands/lays-com), Tequila Sunrise (https://brandsweets.com/palettes/vivid#tequila-sunrise). — https://brandsweets.com/colors/gold

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

- On white (#ffffff): 6.37:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #aa1d40 (7.1:1)
- On black (#000000): 3.3:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #dc2e59 (4.58:1); AA: background → #d9d9d9 (4.51:1); AAA: text → #e76f8d (7.06:1)

## Brands using this color

- **MLB** — secondary #bf0d3e (Δ 1.808) — https://brandsweets.com/colors/brands/mlb-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/b71f45-c49ca1-62cb7e-2d221f-f1e9ef?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: "#b71f45" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.