# #b20101

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

## Values

- Hex: `#b20101`
- RGB: rgb(178, 1, 1)
- HSL: hsl(0, 99%, 35%)
- OKLCH: oklch(0.48 0.196 29.2)
- Relative luminance: 0.0949
- Nearest named color: All Systems Red (#b30103, Δ 0.235) — https://brandsweets.com/colors/all-systems-red
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/b20101

## Tints & shades

- Tints (toward white): #d00101, #f40101, #fe1616, #fe3434, #fe5858, #fe7676, #fe9494, #ffb3b3, #ffd6d6, #fff5f5
- Shades (toward black): #a20101, #930101, #840101, #750101, #650101, #510000, #420000, #330000, #240000, #140000

## Harmonies

- Complementary: #01b2b2
- Analogous: #b20159, #b25901
- Triadic: #01b201, #0101b2
- Split-complementary: #01b259, #0159b2
- Tetradic: #59b201, #01b2b2, #5901b2

## Colors that go with #b20101

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 #b20101 — 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
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #b20101: 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 #b20101 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), Saffron (https://brandsweets.com/palettes/warm#saffron), Redfin (https://brandsweets.com/colors/brands/redfin-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #b20101 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
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #b20101: 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), Reebok (https://brandsweets.com/colors/brands/reebok-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #b20101 in 9 real palettes, including Wendy's's brand system and Vodafone's brand system, as the lead colour. Seen in: Wendy's (https://brandsweets.com/colors/brands/wendys-com), Vodafone (https://brandsweets.com/colors/brands/vodafone-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Huawei (https://brandsweets.com/colors/brands/huawei-com). — https://brandsweets.com/colors/crimson
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #b20101 in 4 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
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #b20101: 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). — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 7.25:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.9:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #ef0101 (4.67:1); AA: background → #cccccc (4.51:1); AAA: text → #fe6262 (7.14:1); AAA: background → #fcfcfc (7.06:1)

## Brands using this color

- **Trader Joe's** — accent #af0006 (Δ 0.7) — https://brandsweets.com/colors/brands/traderjoes-com
- **In-N-Out Burger** — secondary #b60000 (Δ 0.845) — https://brandsweets.com/colors/brands/in-n-out-com
- **Bose** — accent #ad0000 (Δ 1.102) — https://brandsweets.com/colors/brands/bose-com
- **Wendy's** — secondary #b0161f (Δ 1.693) — https://brandsweets.com/colors/brands/wendys-com
- **Twilio** — accent #b10f23 (Δ 1.985) — https://brandsweets.com/colors/brands/twilio-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/b20101-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: "#b20101" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.