# #fb3909

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

## Values

- Hex: `#fb3909`
- RGB: rgb(251, 57, 9)
- HSL: hsl(12, 97%, 51%)
- OKLCH: oklch(0.644 0.233 33.1)
- Relative luminance: 0.2346
- Nearest named color: orangered (#ff4500, Δ 1.937) — https://brandsweets.com/colors/orangered
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/fb3909

## Tints & shades

- Tints (toward white): #fc4d22, #fc5e36, #fc724f, #fd8668, #fd9a81, #fdaa96, #febeaf, #fed3c8, #fee3dc, #fff7f5
- Shades (toward black): #e73104, #d32d03, #ba2703, #a12202, #8d1e02, #741902, #5a1301, #410e01, #2d0a01, #140400

## Harmonies

- Complementary: #09cbfb
- Analogous: #fb0952, #fbb309
- Triadic: #09fb39, #3909fb
- Split-complementary: #09fbb3, #0952fb
- Tetradic: #52fb09, #09cbfb, #b309fb

## Colors that go with #fb3909

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 #fb3909: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Logitech (https://brandsweets.com/colors/brands/logitech-com), Audi (https://brandsweets.com/colors/brands/audi-com). — https://brandsweets.com/colors/charcoal
- **Cadet Blue** #5f9ea0 [harmony, pool: complementary] — Cadet Blue sits directly opposite #fb3909 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Diner (https://brandsweets.com/palettes/vivid#diner), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue
- **Amber** #ffbf00 [pool] — Amber is paired with #fb3909 in 7 real palettes, including Heatwave and Google's brand system, as the supporting colour. Seen in: Heatwave (https://brandsweets.com/palettes/warm#heatwave), Google (https://brandsweets.com/colors/brands/google-com), Ember (https://brandsweets.com/palettes/bold#ember), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Doordash's brand system and Glossier's brand system put Blue beside #fb3909, as the accent. Seen in: Doordash (https://brandsweets.com/colors/brands/doordash-com), Glossier (https://brandsweets.com/colors/brands/glossier-com), Gap (https://brandsweets.com/colors/brands/gap-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #fb3909: 4 real palettes, including NASA's brand system and Tide's brand system, as the lead colour. Seen in: NASA (https://brandsweets.com/colors/brands/nasa-gov), Tide (https://brandsweets.com/colors/brands/tide-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/cobalt
- **Denim** #1560bd [pool] — Designers have shipped Denim with #fb3909: 14 real palettes, including L'Oréal's brand system and YouTube's brand system, as the accent. Seen in: L'Oréal (https://brandsweets.com/colors/brands/loreal-com), YouTube (https://brandsweets.com/colors/brands/youtube-com), Strava (https://brandsweets.com/colors/brands/strava-com), Soundcloud (https://brandsweets.com/colors/brands/soundcloud-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #fb3909: 7 real palettes, including Databricks's brand system and Figma's brand system, as the accent. Seen in: Databricks (https://brandsweets.com/colors/brands/databricks-com), Figma (https://brandsweets.com/colors/brands/figma), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #fb3909: 8 real palettes, including 3M's brand system and Ember, as the supporting colour. Seen in: 3M (https://brandsweets.com/colors/brands/3m-com), Ember (https://brandsweets.com/palettes/bold#ember), Vodafone (https://brandsweets.com/colors/brands/vodafone-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 3.69:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e23003 (4.51:1); AA: background → #1c1c1c (4.62:1); AAA: text → #ab2403 (7.03:1)
- On black (#000000): 5.69:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #fc6640 (7.11:1)

## Brands using this color

- **Rotten Tomatoes** — accent #fa320a (Δ 0.853) — https://brandsweets.com/colors/brands/rottentomatoes-com
- **NASA** — secondary #fc3d21 (Δ 0.953) — https://brandsweets.com/colors/brands/nasa-gov
- **Databricks** — primary #fc341c (Δ 1.005) — https://brandsweets.com/colors/brands/databricks-com
- **Doordash** — primary #ff3008 (Δ 1.032) — https://brandsweets.com/colors/brands/doordash-com
- **Brex** — secondary #ff3d00 (Δ 1.063) — https://brandsweets.com/colors/brands/brex-com
- **Glossier** — secondary #f94200 (Δ 1.176) — https://brandsweets.com/colors/brands/glossier-com
- **Neon** — accent #ff3621 (Δ 1.316) — https://brandsweets.com/colors/brands/neon-tech
- **Reddit** — secondary #fc4301 (Δ 1.383) — https://brandsweets.com/colors/brands/reddit-com
- **Reddit** — primary #ff4500 (Δ 1.937) — https://brandsweets.com/colors/brands/reddit-com

## Curated palettes containing it

- **Electric Lime** (neon, vivid, bold, light) — #c6ff00, #111111, #ff3d00, #ffffff — One neon on white with black type — lime-and-black is the neon that works in daylight; the orange is a second gear. — tool: https://brandsweets.com/palettes/new/c6ff00-111111-ff3d00-ffffff — collection: https://brandsweets.com/palettes/neon

## 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/fb3909-c4a99c-62cbad-2d281f-f1e9ec?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: "#fb3909" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.