# #a40a04

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

## Values

- Hex: `#a40a04`
- RGB: rgb(164, 10, 4)
- HSL: hsl(2, 95%, 33%)
- OKLCH: oklch(0.455 0.182 29.5)
- Relative luminance: 0.0812
- Nearest named color: Bleeding Crimson (#9b1414, Δ 1.916) — https://brandsweets.com/colors/bleeding-crimson
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/a40a04

## Tints & shades

- Tints (toward white): #c70c05, #e50d06, #f91d15, #fa3a33, #fb5b56, #fb7874, #fc9a97, #fdb7b4, #fed9d7, #fff5f5
- Shades (toward black): #950904, #860803, #770703, #680603, #5e0502, #500502, #410402, #320301, #230201, #140101

## Harmonies

- Complementary: #049fa4
- Analogous: #a4044f, #a45904
- Triadic: #04a40a, #0a04a4
- Split-complementary: #04a459, #044fa4
- Tetradic: #4fa404, #049fa4, #5904a4

## Colors that go with #a40a04

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 #a40a04 — 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), Chase (https://brandsweets.com/colors/brands/chase-com). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #a40a04 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Saffron (https://brandsweets.com/palettes/warm#saffron). — https://brandsweets.com/colors/teal
- **Crimson** #dc143c [pool] — Crimson is paired with #a40a04 in 6 real palettes, including State Farm's brand system and Wendy's's brand system, as the lead colour. Seen in: State Farm (https://brandsweets.com/colors/brands/statefarm-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Vodafone (https://brandsweets.com/colors/brands/vodafone-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #a40a04: 5 real palettes, including State Farm's brand system and Campbell's's brand system, as the accent. Seen in: State Farm (https://brandsweets.com/colors/brands/statefarm-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com), Nissan (https://brandsweets.com/colors/brands/nissanusa-com), AT&T (https://brandsweets.com/colors/brands/att-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #a40a04 in 4 real palettes, including Fireside and Noir Beauty, as the accent. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty), Harvest (https://brandsweets.com/palettes/warm#harvest), Candlelight (https://brandsweets.com/palettes/warm#candlelight). — https://brandsweets.com/colors/goldenrod
- **Hunter Green** #355e3b [pool] — Hunter Green is paired with #a40a04 in 4 real palettes, including Fireside and Bookshop, as the supporting colour. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Bookshop (https://brandsweets.com/palettes/editorial#bookshop), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Darkroom (https://brandsweets.com/palettes/muted#darkroom). — https://brandsweets.com/colors/hunter-green
- **Sienna** #a0522d [harmony, pool: analogous] — Sienna is #a40a04's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Harvest (https://brandsweets.com/palettes/warm#harvest), Aesop (https://brandsweets.com/colors/brands/aesop-com). — https://brandsweets.com/colors/sienna
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #a40a04: 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). — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 8:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.62:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #ea0e06 (4.56:1); AA: background → #c4c4c4 (4.59:1); AAA: text → #fb6560 (7.13:1); AAA: background → #f0f0f0 (7.02:1)

## Brands using this color

- **State Farm** — secondary #a11b13 (Δ 1.241) — https://brandsweets.com/colors/brands/statefarm-com
- **Bose** — accent #ad0000 (Δ 1.827) — https://brandsweets.com/colors/brands/bose-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/a40a04-c4a29c-62cb9c-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: "#a40a04" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.