# #cb180b

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

## Values

- Hex: `#cb180b`
- RGB: rgb(203, 24, 11)
- HSL: hsl(4, 90%, 42%)
- OKLCH: oklch(0.536 0.21 29.8)
- Relative luminance: 0.1337
- Nearest named color: Blood Kiss (#c30b0a, Δ 2.048) — https://brandsweets.com/colors/blood-kiss
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/cb180b

## Tints & shades

- Tints (toward white): #e91b0c, #f32a1b, #f54538, #f65c51, #f7776e, #f9928b, #faa9a3, #fcc4c0, #fddbd8, #fef6f5
- Shades (toward black): #b8150a, #a51309, #961108, #830f07, #6f0d06, #5c0b05, #490804, #3a0703, #270402, #130201

## Harmonies

- Complementary: #0bbfcb
- Analogous: #cb0b5e, #cb780b
- Triadic: #0bcb18, #180bcb
- Split-complementary: #0bcb78, #0b5ecb
- Tetradic: #5ecb0b, #0bbfcb, #780bcb

## Colors that go with #cb180b

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

- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #cb180b: 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), Logitech (https://brandsweets.com/colors/brands/logitech-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #cb180b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), Coinbase (https://brandsweets.com/colors/brands/coinbase), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), Toyota (https://brandsweets.com/colors/brands/toyota-com). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #cb180b — 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), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #cb180b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Honda (https://brandsweets.com/colors/brands/honda-com), Wendy's (https://brandsweets.com/colors/brands/wendys-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 #cb180b 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). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #cb180b in 6 real palettes, including Maple and McDonald's's brand system, as the accent. Seen in: Maple (https://brandsweets.com/palettes/warm#maple), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Ember (https://brandsweets.com/palettes/bold#ember). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 6 real palettes, including Tim Hortons's brand system and native Cybersecurity's brand system put Blue beside #cb180b, as the accent. Seen in: 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), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #cb180b: 4 real palettes, including Behance's brand system and MLB's brand system, as the supporting colour. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), MLB (https://brandsweets.com/colors/brands/mlb-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), NASA (https://brandsweets.com/colors/brands/nasa-gov). — https://brandsweets.com/colors/cobalt

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

- On white (#ffffff): 5.71:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #ae1409 (7.23:1)
- On black (#000000): 3.67:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e91b0c (4.63:1); AA: background → #e6e6e6 (4.58:1); AAA: text → #f7695f (7.14:1)

## Brands using this color

- **Behance** — accent #d00d00 (Δ 0.994) — https://brandsweets.com/colors/brands/behance-net
- **Honda** — secondary #cc0000 (Δ 1.021) — https://brandsweets.com/colors/brands/honda-com
- **Budweiser** — secondary #cc0414 (Δ 1.154) — https://brandsweets.com/colors/brands/budweiser-com
- **3M** — secondary #c80000 (Δ 1.454) — https://brandsweets.com/colors/brands/3m-com
- **Huawei** — secondary #c7000b (Δ 1.657) — https://brandsweets.com/colors/brands/huawei-com
- **Ferrari** — primary #d40000 (Δ 1.772) — https://brandsweets.com/colors/brands/ferrari-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/cb180b-c4a39c-62cb9f-2d261f-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: "#cb180b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.