# #f63f23

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

## Values

- Hex: `#f63f23`
- RGB: rgb(246, 63, 35)
- HSL: hsl(8, 92%, 55%)
- OKLCH: oklch(0.641 0.223 31.6)
- Relative luminance: 0.2327
- Nearest named color: Arcade Fire (#ee3311, Δ 2.441) — https://brandsweets.com/colors/arcade-fire
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/f63f23

## Tints & shades

- Tints (toward white): #f75036, #f8654f, #f87662, #f98776, #fa9d8e, #fbaea2, #fcbfb6, #fdd0c9, #fee5e2, #fff6f5
- Shades (toward black): #f5290a, #dc2509, #c42108, #ab1d07, #931906, #761405, #5d1004, #450c03, #2c0702, #140301

## Harmonies

- Complementary: #23daf6
- Analogous: #f62370, #f6a823
- Triadic: #23f63f, #3f23f6
- Split-complementary: #23f6a8, #2370f6
- Tetradic: #70f623, #23daf6, #a823f6

## Colors that go with #f63f23

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 #f63f23: 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 #f63f23 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 #f63f23 in 7 real palettes, including Google's brand system and Heatwave, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), 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 #f63f23, 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 #f63f23: 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), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/cobalt
- **Denim** #1560bd [pool] — Designers have shipped Denim with #f63f23: 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), PlanetScale (https://brandsweets.com/colors/brands/planetscale-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #f63f23: 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), Google (https://brandsweets.com/colors/brands/google-com), Replit (https://brandsweets.com/colors/brands/replit). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #f63f23: 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): 3.71:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e6270a (4.51:1); AA: background → #1c1c1c (4.59:1); AAA: text → #ab1d07 (7.22:1)
- On black (#000000): 5.65:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #f86a54 (7.18:1)

## Brands using this color

- **NASA** — secondary #fc3d21 (Δ 1.112) — https://brandsweets.com/colors/brands/nasa-gov
- **Databricks** — primary #fc341c (Δ 1.394) — https://brandsweets.com/colors/brands/databricks-com
- **NASA** — accent #f64137 (Δ 1.422) — https://brandsweets.com/colors/brands/nasa-gov
- **Rotten Tomatoes** — accent #fa320a (Δ 1.469) — https://brandsweets.com/colors/brands/rottentomatoes-com
- **Glossier** — secondary #f94200 (Δ 1.572) — https://brandsweets.com/colors/brands/glossier-com
- **Neon** — accent #ff3621 (Δ 1.745) — https://brandsweets.com/colors/brands/neon-tech
- **Reddit** — secondary #fc4301 (Δ 1.934) — https://brandsweets.com/colors/brands/reddit-com
- **Doordash** — primary #ff3008 (Δ 1.988) — https://brandsweets.com/colors/brands/doordash-com
- **Brex** — secondary #ff3d00 (Δ 1.991) — https://brandsweets.com/colors/brands/brex-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/f63f23-c4a69c-62cba6-2d271f-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: "#f63f23" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.