# #f23639

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

## Values

- Hex: `#f23639`
- RGB: rgb(242, 54, 57)
- HSL: hsl(359, 88%, 58%)
- OKLCH: oklch(0.629 0.223 25.8)
- Relative luminance: 0.2181
- Nearest named color: Arcade Fire (#ee3311, Δ 2.728) — https://brandsweets.com/colors/arcade-fire
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/f23639

## Tints & shades

- Tints (toward white): #f3494c, #f55c5f, #f66f71, #f78284, #f89697, #f9a9aa, #fbbcbd, #fccfd0, #fde2e3, #fef5f6
- Shades (toward black): #f11e21, #e10e12, #c90d10, #ad0b0e, #95090c, #7d080a, #600608, #480506, #2b0303, #130102

## Harmonies

- Complementary: #36f2ef
- Analogous: #f23697, #f29136
- Triadic: #39f236, #3639f2
- Split-complementary: #36f291, #3697f2
- Tetradic: #97f236, #36f2ef, #9136f2

## Colors that go with #f23639

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 #f23639: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Audi (https://brandsweets.com/colors/brands/audi-com), Logitech (https://brandsweets.com/colors/brands/logitech-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com). — https://brandsweets.com/colors/charcoal
- **Dodger Blue** #1e90ff [harmony, pool: triadic] — Dodger Blue completes a triad with #f23639 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Databricks (https://brandsweets.com/colors/brands/databricks-com), Figma (https://brandsweets.com/colors/brands/figma), Replit (https://brandsweets.com/colors/brands/replit). — https://brandsweets.com/colors/dodgerblue
- **Steel Blue** #4682b4 [harmony, pool: split] — Steel Blue is a split-complement of #f23639: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Wired (https://brandsweets.com/colors/brands/wired-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/steelblue
- **Cadet Blue** #5f9ea0 [harmony, pool: complementary] — Cadet Blue sits directly opposite #f23639 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 #f23639 in 7 real palettes, including Google's brand system and Wired's brand system, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Wired (https://brandsweets.com/colors/brands/wired-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 9 real palettes, including Doordash's brand system and native Cybersecurity's brand system put Blue beside #f23639, as the accent. Seen in: Doordash (https://brandsweets.com/colors/brands/doordash-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com), Gap (https://brandsweets.com/colors/brands/gap-com), Glossier (https://brandsweets.com/colors/brands/glossier-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #f23639: 5 real palettes, including NASA's brand system and Walgreens's brand system, as the lead colour. Seen in: NASA (https://brandsweets.com/colors/brands/nasa-gov), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Tide (https://brandsweets.com/colors/brands/tide-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/cobalt
- **Denim** #1560bd [pool] — Designers have shipped Denim with #f23639: 18 real palettes, including ElevenLabs's brand system and L'Oréal's brand system, as the accent. Seen in: ElevenLabs (https://brandsweets.com/colors/brands/elevenlabs-io), L'Oréal (https://brandsweets.com/colors/brands/loreal-com), YouTube (https://brandsweets.com/colors/brands/youtube-com), Costco (https://brandsweets.com/colors/brands/costco-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 3.92:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #eb0f13 (4.56:1); AA: background → #171717 (4.58:1); AAA: text → #b10b0e (7.18:1)
- On black (#000000): 5.36:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #f66a6d (7.2:1)

## Brands using this color

- **Clerk** — secondary #ef4444 (Δ 1.699) — https://brandsweets.com/colors/brands/clerk-com
- **Wise** — primary #f4243b (Δ 1.77) — https://brandsweets.com/colors/brands/wise-com
- **NASA** — accent #f64137 (Δ 1.846) — https://brandsweets.com/colors/brands/nasa-gov
- **Pizza Hut** — primary #ee3124 (Δ 1.866) — https://brandsweets.com/colors/brands/pizzahut-com
- **The Ordinary** — secondary #e83f42 (Δ 1.975) — https://brandsweets.com/colors/brands/theordinary-com

## 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/f23639-c4a09c-62cb96-2d251f-f1e9ed?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: "#f23639" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.