# #fb5a09

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

## Values

- Hex: `#fb5a09`
- RGB: rgb(251, 90, 9)
- HSL: hsl(20, 97%, 51%)
- OKLCH: oklch(0.675 0.209 40)
- Relative luminance: 0.2784
- Nearest named color: Basketball (#ee6730, Δ 2.948) — https://brandsweets.com/colors/basketball
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/fb5a09

## Tints & shades

- Tints (toward white): #fc6b22, #fc7836, #fc894f, #fd9a68, #fdab81, #fdb896, #fec9af, #fedac8, #fee7dc, #fff8f5
- Shades (toward black): #e74f04, #d34803, #ba4003, #a13702, #8d3002, #742802, #5a1f01, #411601, #2d1001, #140700

## Harmonies

- Complementary: #09aafb
- Analogous: #fb0931, #fbd309
- Triadic: #09fb5a, #5a09fb
- Split-complementary: #09fbd3, #0931fb
- Tetradic: #31fb09, #09aafb, #d309fb

## Colors that go with #fb5a09

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Cadet Blue** #5f9ea0 [harmony, pool: complementary] — Cadet Blue sits directly opposite #fb5a09 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Diner (https://brandsweets.com/palettes/vivid#diner), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/cadetblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #fb5a09: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com), HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #fb5a09 in 8 real palettes, including Ember and Heatwave, as the accent. Seen in: Ember (https://brandsweets.com/palettes/bold#ember), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Maple (https://brandsweets.com/palettes/warm#maple), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 7 real palettes, including Readymag's brand system and Glossier's brand system put Blue beside #fb5a09, as the supporting colour. Seen in: Readymag (https://brandsweets.com/colors/brands/readymag-com), Glossier (https://brandsweets.com/colors/brands/glossier-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Doordash (https://brandsweets.com/colors/brands/doordash-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #fb5a09: 4 real palettes, including Tide's brand system and NASA's brand system, as the lead colour. Seen in: Tide (https://brandsweets.com/colors/brands/tide-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Cobalt Pop (https://brandsweets.com/palettes/bold#cobalt-pop). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #fb5a09: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Roblox (https://brandsweets.com/colors/brands/roblox-com), JBL (https://brandsweets.com/colors/brands/jbl-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #fb5a09 in 8 real palettes, including Pizza Hut's brand system and Burger King's brand system, as the supporting colour. Seen in: Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Burger King (https://brandsweets.com/colors/brands/bk-com), Redfin (https://brandsweets.com/colors/brands/redfin-com), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #fb5a09: 14 real palettes, including Soundcloud's brand system and Strava's brand system, as the accent. Seen in: Soundcloud (https://brandsweets.com/colors/brands/soundcloud-com), Strava (https://brandsweets.com/colors/brands/strava-com), PlanetScale (https://brandsweets.com/colors/brands/planetscale-com), Etsy (https://brandsweets.com/colors/brands/etsy-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 3.2:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #ce4703 (4.64:1); AA: background → #292929 (4.55:1); AAA: text → #9c3502 (7.18:1)
- On black (#000000): 6.57:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #fc671d (7.1:1)

## Brands using this color

- **Intercom** — secondary #ff5600 (Δ 0.843) — https://brandsweets.com/colors/brands/intercom-com
- **Soundcloud** — secondary #ff5500 (Δ 0.937) — https://brandsweets.com/colors/brands/soundcloud-com
- **Prepare your taste buds...** — primary #fc5404 (Δ 0.942) — https://brandsweets.com/colors/brands/grubhub-com
- **Strava** — primary #fc5404 (Δ 0.942) — https://brandsweets.com/colors/brands/strava-com
- **Substack** — primary #fc5404 (Δ 0.942) — https://brandsweets.com/colors/brands/substack-com
- **Cloudflare** — secondary #ff5e1f (Δ 1.26) — https://brandsweets.com/colors/brands/cloudflare
- **Readymag** — accent #ff5000 (Δ 1.563) — https://brandsweets.com/colors/brands/readymag-com
- **PlanetScale** — primary #f35815 (Δ 1.646) — https://brandsweets.com/colors/brands/planetscale-com
- **PlanetScale** — secondary #f35815 (Δ 1.646) — https://brandsweets.com/colors/brands/planetscale-com
- **dbt Labs** — primary #fc6304 (Δ 1.681) — https://brandsweets.com/colors/brands/getdbt-com
- **Replit** — primary #f26207 (Δ 1.995) — https://brandsweets.com/colors/brands/replit

## Curated palettes containing it

- **Ember** (bold, dark, warm) — #f25f29, #b03a2e, #f2c14e, #14100e, #f8ede3 — Flame orange on charcoal — the sports and energy palette; one accent yellow for stats and highlights. — tool: https://brandsweets.com/palettes/new/f25f29-b03a2e-f2c14e-14100e-f8ede3 — collection: https://brandsweets.com/palettes/bold
- **Night Market** (neon, vivid, dark, warm) — #ff5f1f, #ff2fb3, #ffd400, #120b14, #fff1e6 — Orange, magenta and yellow neon on aubergine-black — the street-sign palette for food, nightlife and events. — tool: https://brandsweets.com/palettes/new/ff5f1f-ff2fb3-ffd400-120b14-fff1e6 — collection: https://brandsweets.com/palettes/neon
- **Heatwave** (summer, warm, bold, vivid) — #ff4d00, #ffb800, #0091ff, #fff9f0, #231205 — Blaze orange and hot yellow with one cold blue — the high-noon palette; use the blue where the eye needs to rest. — tool: https://brandsweets.com/palettes/new/ff4d00-ffb800-0091ff-fff9f0-231205 — collection: https://brandsweets.com/palettes/summer

## 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/fb5a09-c4ae9c-62cbbb-2d2a1f-f1e9eb?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: "#fb5a09" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.