# #ef611f

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

## Values

- Hex: `#ef611f`
- RGB: rgb(239, 97, 31)
- HSL: hsl(19, 87%, 53%)
- OKLCH: oklch(0.666 0.189 41.5)
- Relative luminance: 0.27
- Nearest named color: Basketball (#ee6730, Δ 1.239) — https://brandsweets.com/colors/basketball
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ef611f

## Tints & shades

- Tints (toward white): #f17237, #f27f4a, #f49062, #f59d75, #f7ae8d, #f8bca0, #facdb7, #fbdacb, #fdebe2, #fef8f5
- Shades (toward black): #e55310, #cd4b0e, #b5420d, #9d390b, #8a320a, #722a08, #5b2106, #431805, #2b1003, #130701

## Harmonies

- Complementary: #1fadef
- Analogous: #ef1f45, #efc91f
- Triadic: #1fef61, #611fef
- Split-complementary: #1fefc9, #1f45ef
- Tetradic: #45ef1f, #1fadef, #c91fef

## Colors that go with #ef611f

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 #ef611f 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), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #ef611f: 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), Hermès (https://brandsweets.com/colors/brands/hermes-com), Harbour (https://brandsweets.com/palettes/cool#harbour). — https://brandsweets.com/colors/charcoal
- **Dodger Blue** #1e90ff [harmony, pool: split] — Dodger Blue is a split-complement of #ef611f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Replit (https://brandsweets.com/colors/brands/replit), Figma (https://brandsweets.com/colors/brands/figma), Readymag (https://brandsweets.com/colors/brands/readymag-com), Abstract (https://brandsweets.com/colors/brands/abstract-com). — https://brandsweets.com/colors/dodgerblue
- **Amber** #ffbf00 [pool] — Amber is paired with #ef611f in 9 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 #ef611f, 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), Sketch (https://brandsweets.com/colors/brands/sketch-com). — https://brandsweets.com/colors/blue
- **Burlywood** #deb887 [pool] — Burlywood is paired with #ef611f in 4 real palettes, including Kiln and Chalkboard, as the accent. Seen in: Kiln (https://brandsweets.com/palettes/dark#kiln), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Polaroid (https://brandsweets.com/palettes/light#polaroid). — https://brandsweets.com/colors/burlywood
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #ef611f: 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: triadic] — Cornflower Blue completes a triad with #ef611f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. 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

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

- On white (#ffffff): 3.28:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #cd4b0e (4.56:1); AA: background → #262626 (4.61:1); AAA: text → #99380b (7.18:1)
- On black (#000000): 6.4:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #f16e32 (7.02:1)

## Brands using this color

- **Etsy** — primary #f1641e (Δ 0.756) — https://brandsweets.com/colors/brands/etsy-com
- **Replit** — primary #f26207 (Δ 1.016) — https://brandsweets.com/colors/brands/replit
- **PlanetScale** — primary #f35815 (Δ 1.548) — https://brandsweets.com/colors/brands/planetscale-com
- **PlanetScale** — secondary #f35815 (Δ 1.548) — https://brandsweets.com/colors/brands/planetscale-com

## 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

## 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/ef611f-c4ad9c-62cbb9-2d2a1f-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: "#ef611f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.