# #fb4128

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

## Values

- Hex: `#fb4128`
- RGB: rgb(251, 65, 40)
- HSL: hsl(7, 96%, 57%)
- OKLCH: oklch(0.652 0.225 31.1)
- Relative luminance: 0.2444
- Nearest named color: orangered (#ff4500, Δ 1.963) — https://brandsweets.com/colors/orangered
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/fb4128

## Tints & shades

- Tints (toward white): #fb523c, #fb6450, #fc7664, #fc8778, #fd9e91, #fdafa5, #fec1b9, #fed3cd, #fee4e1, #fff6f5
- Shades (toward black): #fa2b0f, #e61f05, #cd1c04, #b41804, #9b1503, #7d1103, #640d02, #4b0a02, #2d0601, #140300

## Harmonies

- Complementary: #28e2fb
- Analogous: #fb2879, #fbaa28
- Triadic: #28fb41, #4128fb
- Split-complementary: #28fbaa, #2879fb
- Tetradic: #79fb28, #28e2fb, #aa28fb

## Colors that go with #fb4128

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 #fb4128: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Tumblr (https://brandsweets.com/colors/brands/tumblr-com), HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Audi (https://brandsweets.com/colors/brands/audi-com), Logitech (https://brandsweets.com/colors/brands/logitech-com). — https://brandsweets.com/colors/charcoal
- **Cadet Blue** #5f9ea0 [harmony, pool: complementary] — Cadet Blue sits directly opposite #fb4128 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 #fb4128 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 Glossier's brand system and Doordash's brand system put Blue beside #fb4128, as the accent. Seen in: Glossier (https://brandsweets.com/colors/brands/glossier-com), Doordash (https://brandsweets.com/colors/brands/doordash-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #fb4128: 5 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), Cobalt Pop (https://brandsweets.com/palettes/bold#cobalt-pop). — https://brandsweets.com/colors/cobalt
- **Denim** #1560bd [pool] — Designers have shipped Denim with #fb4128: 14 real palettes, including Strava's brand system and Soundcloud's brand system, as the accent. Seen in: Strava (https://brandsweets.com/colors/brands/strava-com), Soundcloud (https://brandsweets.com/colors/brands/soundcloud-com), PlanetScale (https://brandsweets.com/colors/brands/planetscale-com), L'Oréal (https://brandsweets.com/colors/brands/loreal-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #fb4128: 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 #fb4128: 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): 3.57:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e61f05 (4.6:1); AA: background → #212121 (4.52:1); AAA: text → #af1804 (7.11:1)
- On black (#000000): 5.89:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #fb6450 (7.04:1)

## Brands using this color

- **NASA** — secondary #fc3d21 (Δ 0.515) — https://brandsweets.com/colors/brands/nasa-gov
- **Neon** — accent #ff3621 (Δ 1.231) — https://brandsweets.com/colors/brands/neon-tech
- **Databricks** — primary #fc341c (Δ 1.41) — https://brandsweets.com/colors/brands/databricks-com
- **Tumblr** — accent #ff4930 (Δ 1.482) — https://brandsweets.com/colors/brands/tumblr-com
- **NASA** — accent #f64137 (Δ 1.484) — https://brandsweets.com/colors/brands/nasa-gov
- **Brex** — secondary #ff3d00 (Δ 1.535) — https://brandsweets.com/colors/brands/brex-com
- **Reddit** — secondary #fc4301 (Δ 1.641) — https://brandsweets.com/colors/brands/reddit-com
- **Glossier** — secondary #f94200 (Δ 1.671) — https://brandsweets.com/colors/brands/glossier-com
- **Doordash** — primary #ff3008 (Δ 1.858) — https://brandsweets.com/colors/brands/doordash-com
- **Rotten Tomatoes** — accent #fa320a (Δ 1.89) — https://brandsweets.com/colors/brands/rottentomatoes-com
- **Reddit** — primary #ff4500 (Δ 1.963) — https://brandsweets.com/colors/brands/reddit-com

## Curated palettes containing it

- **Streetwear** (bold, vivid, dark) — #ff3b30, #ffffff, #ffe600, #0a0a0a — Black, white, red, yellow — drop-culture signal colors, unmissable at thumbnail size. — tool: https://brandsweets.com/palettes/new/ff3b30-ffffff-ffe600-0a0a0a — collection: https://brandsweets.com/palettes/bold
- **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/fb4128-c4a59c-62cba4-2d271f-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: "#fb4128" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.