# #ef542a

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

## Values

- Hex: `#ef542a`
- RGB: rgb(239, 84, 42)
- HSL: hsl(13, 86%, 55%)
- OKLCH: oklch(0.651 0.198 35.6)
- Relative luminance: 0.2486
- Nearest named color: Blazing (#e94e41, Δ 2.829) — https://brandsweets.com/colors/blazing
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ef542a

## Tints & shades

- Tints (toward white): #f0633d, #f27654, #f48667, #f5957a, #f7a892, #f8b7a5, #fac6b8, #fbd5cb, #fde8e3, #fef7f6
- Shades (toward black): #ed4112, #d53b10, #be340e, #a62e0c, #8e270b, #721f09, #5a1907, #421205, #2b0c03, #130501

## Harmonies

- Complementary: #2ac4ef
- Analogous: #ef2a61, #efb72a
- Triadic: #2aef54, #542aef
- Split-complementary: #2aefb7, #2a61ef
- Tetradic: #61ef2a, #2ac4ef, #b72aef

## Colors that go with #ef542a

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 #ef542a 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), Dusk (https://brandsweets.com/palettes/cool#dusk), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty). — https://brandsweets.com/colors/cadetblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #ef542a: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Harbour (https://brandsweets.com/palettes/cool#harbour). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #ef542a 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), Google (https://brandsweets.com/colors/brands/google-com), Maple (https://brandsweets.com/palettes/warm#maple). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Glossier's brand system and Readymag's brand system put Blue beside #ef542a, as the accent. Seen in: Glossier (https://brandsweets.com/colors/brands/glossier-com), Readymag (https://brandsweets.com/colors/brands/readymag-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 #ef542a: 5 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
- **Crimson** #dc143c [pool] — Crimson is paired with #ef542a in 8 real palettes, including Pizza Hut's brand system and Redfin's brand system, as the supporting colour. Seen in: Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Redfin (https://brandsweets.com/colors/brands/redfin-com), Snyk (https://brandsweets.com/colors/brands/snyk-io), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #ef542a: 15 real palettes, including PlanetScale's brand system and Strava's brand system, as the accent. Seen in: PlanetScale (https://brandsweets.com/colors/brands/planetscale-com), Strava (https://brandsweets.com/colors/brands/strava-com), Postman (https://brandsweets.com/colors/brands/postman-com), Etsy (https://brandsweets.com/colors/brands/etsy-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #ef542a: 8 real palettes, including Figma's brand system and Replit's brand system, as the accent. Seen in: Figma (https://brandsweets.com/colors/brands/figma), Replit (https://brandsweets.com/colors/brands/replit), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 3.52:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #da3c10 (4.53:1); AA: background → #212121 (4.58:1); AAA: text → #a12c0c (7.29:1)
- On black (#000000): 5.97:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #f16f4b (7.12:1)

## Brands using this color

- **Figma** — primary #f24e1e (Δ 1.008) — https://brandsweets.com/colors/brands/figma
- **Figma** — logoRed #f24e1e (Δ 1.008) — https://brandsweets.com/colors/brands/figma
- **PlanetScale** — primary #f35815 (Δ 1.695) — https://brandsweets.com/colors/brands/planetscale-com
- **PlanetScale** — secondary #f35815 (Δ 1.695) — https://brandsweets.com/colors/brands/planetscale-com
- **Cursor** — primary #f54e00 (Δ 1.762) — https://brandsweets.com/colors/brands/cursor-com
- **Cursor** — secondary #f54e00 (Δ 1.762) — https://brandsweets.com/colors/brands/cursor-com
- **Replit** — secondary #ec4e02 (Δ 1.847) — https://brandsweets.com/colors/brands/replit

## 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/ef542a-c4a99c-62cbaf-2d281f-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: "#ef542a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.