# #fc421d

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

## Values

- Hex: `#fc421d`
- RGB: rgb(252, 66, 29)
- HSL: hsl(10, 97%, 55%)
- OKLCH: oklch(0.653 0.227 32.8)
- Relative luminance: 0.2468
- Nearest named color: orangered (#ff4500, Δ 1.265) — https://brandsweets.com/colors/orangered
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/fc421d

## Tints & shades

- Tints (toward white): #fc5331, #fc684a, #fd795e, #fd8972, #fd9e8b, #feafa0, #fec0b4, #fed1c8, #ffe6e1, #fff7f5
- Shades (toward black): #fb2d04, #e22903, #c92403, #b02003, #971b02, #791602, #5f1101, #460d01, #2d0801, #140400

## Harmonies

- Complementary: #1dd6fc
- Analogous: #fc1d67, #fcb11d
- Triadic: #1dfc42, #421dfc
- Split-complementary: #1dfcb1, #1d67fc
- Tetradic: #67fc1d, #1dd6fc, #b11dfc

## Colors that go with #fc421d

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 #fc421d: 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 #fc421d 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 #fc421d 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 #fc421d, as the accent. Seen in: Glossier (https://brandsweets.com/colors/brands/glossier-com), Doordash (https://brandsweets.com/colors/brands/doordash-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Monzo (https://brandsweets.com/colors/brands/monzo-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #fc421d: 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 #fc421d: 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 #fc421d: 7 real palettes, including Databricks's brand system and Heatwave, as the accent. Seen in: Databricks (https://brandsweets.com/colors/brands/databricks-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Figma (https://brandsweets.com/colors/brands/figma), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #fc421d: 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): 3.54:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e22903 (4.61:1); AA: background → #212121 (4.55:1); AAA: text → #ab1f03 (7.17:1)
- On black (#000000): 5.94:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #fc6445 (7.05:1)

## Brands using this color

- **NASA** — secondary #fc3d21 (Δ 0.739) — https://brandsweets.com/colors/brands/nasa-gov
- **Reddit** — secondary #fc4301 (Δ 0.94) — https://brandsweets.com/colors/brands/reddit-com
- **Brex** — secondary #ff3d00 (Δ 0.95) — https://brandsweets.com/colors/brands/brex-com
- **Glossier** — secondary #f94200 (Δ 1.121) — https://brandsweets.com/colors/brands/glossier-com
- **Reddit** — primary #ff4500 (Δ 1.265) — https://brandsweets.com/colors/brands/reddit-com
- **Neon** — accent #ff3621 (Δ 1.486) — https://brandsweets.com/colors/brands/neon-tech
- **Tumblr** — accent #ff4930 (Δ 1.5) — https://brandsweets.com/colors/brands/tumblr-com
- **HubSpot** — secondary #ff4800 (Δ 1.574) — https://brandsweets.com/colors/brands/hubspot-com
- **Databricks** — primary #fc341c (Δ 1.656) — https://brandsweets.com/colors/brands/databricks-com
- **Tide** — accent #fb4c06 (Δ 1.793) — https://brandsweets.com/colors/brands/tide-com
- **Doordash** — primary #ff3008 (Δ 1.831) — https://brandsweets.com/colors/brands/doordash-com
- **Together AI** — primary #fc4c02 (Δ 1.874) — https://brandsweets.com/colors/brands/together-ai
- **Rotten Tomatoes** — accent #fa320a (Δ 1.94) — https://brandsweets.com/colors/brands/rottentomatoes-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/fc421d-c4a79c-62cbaa-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: "#fc421d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.