# #b40407

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

## Values

- Hex: `#b40407`
- RGB: rgb(180, 4, 7)
- HSL: hsl(359, 96%, 36%)
- OKLCH: oklch(0.485 0.197 28.7)
- Relative luminance: 0.0981
- Nearest named color: All Systems Red (#b30103, Δ 0.319) — https://brandsweets.com/colors/all-systems-red
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/b40407

## Tints & shades

- Tints (toward white): #d20408, #f00509, #fa1e22, #fb3c3f, #fc5a5d, #fc787a, #fd9698, #feb9ba, #fed7d8, #fff5f5
- Shades (toward black): #a50306, #960306, #820305, #730204, #640204, #550203, #460103, #320102, #230101, #140001

## Harmonies

- Complementary: #04b4b1
- Analogous: #b4045f, #b45904
- Triadic: #07b404, #0407b4
- Split-complementary: #04b459, #045fb4
- Tetradic: #5fb404, #04b4b1, #5904b4

## Colors that go with #b40407

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 #b40407 — 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), Behance (https://brandsweets.com/colors/brands/behance-net), Coinbase (https://brandsweets.com/colors/brands/coinbase), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #b40407 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Redfin (https://brandsweets.com/colors/brands/redfin-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Saffron (https://brandsweets.com/palettes/warm#saffron). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #b40407 in 4 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), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #b40407 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 #b40407: 9 real palettes, including Campbell's's brand system and State Farm's brand system, as the accent. Seen in: Campbell's (https://brandsweets.com/colors/brands/campbells-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Nissan (https://brandsweets.com/colors/brands/nissanusa-com), AT&T (https://brandsweets.com/colors/brands/att-com). — https://brandsweets.com/colors/denim
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #b40407 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/seagreen
- **Slate Gray** #708090 [pool] — 5 real palettes, including Newsprint and Typewriter put Slate Gray beside #b40407, as the supporting colour. Seen in: Newsprint (https://brandsweets.com/palettes/editorial#newsprint), Typewriter (https://brandsweets.com/palettes/editorial#typewriter), Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty), Gallery (https://brandsweets.com/palettes/editorial#gallery). — https://brandsweets.com/colors/slategray
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #b40407: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 7.09:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.96:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #eb0509 (4.56:1); AA: background → #cfcfcf (4.55:1); AAA: text → #fc6467 (7.16:1); AAA: background → #ffffff (7.09:1)

## Brands using this color

- **In-N-Out Burger** — secondary #b60000 (Δ 0.452) — https://brandsweets.com/colors/brands/in-n-out-com
- **Wendy's** — secondary #b0161f (Δ 1.52) — https://brandsweets.com/colors/brands/wendys-com
- **Bose** — accent #ad0000 (Δ 1.615) — https://brandsweets.com/colors/brands/bose-com
- **Twilio** — accent #b10f23 (Δ 1.792) — https://brandsweets.com/colors/brands/twilio-com
- **Fenty Beauty** — secondary #bd0100 (Δ 1.889) — https://brandsweets.com/colors/brands/fentybeauty-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/b40407-c4a09c-62cb96-2d251f-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: "#b40407" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.