# #ef6f39

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

## Values

- Hex: `#ef6f39`
- RGB: rgb(239, 111, 57)
- HSL: hsl(18, 85%, 58%)
- OKLCH: oklch(0.687 0.172 41.8)
- Relative luminance: 0.3002
- Nearest named color: Basketball (#ee6730, Δ 1.596) — https://brandsweets.com/colors/basketball
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ef6f39

## Tints & shades

- Tints (toward white): #f07d4c, #f28b5f, #f49871, #f5a684, #f7b497, #f8c1aa, #facfbd, #fbddd0, #fdeae3, #fef8f6
- Shades (toward black): #ed5e21, #de4f12, #c64710, #aa3d0e, #92340c, #7b2c0a, #5e2208, #471906, #2a0f03, #130702

## Harmonies

- Complementary: #39b8ef
- Analogous: #ef395d, #efcb39
- Triadic: #39ef6f, #6f39ef
- Split-complementary: #39efcb, #395def
- Tetradic: #5def39, #39b8ef, #cb39ef

## Colors that go with #ef6f39

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 #ef6f39 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), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Dusk (https://brandsweets.com/palettes/cool#dusk), Diner (https://brandsweets.com/palettes/vivid#diner). — https://brandsweets.com/colors/cadetblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #ef6f39: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Hermès (https://brandsweets.com/colors/brands/hermes-com), Harbour (https://brandsweets.com/palettes/cool#harbour), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #ef6f39 in 6 real palettes, including Ember and Maple, as the accent. Seen in: Ember (https://brandsweets.com/palettes/bold#ember), Maple (https://brandsweets.com/palettes/warm#maple), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 7 real palettes, including Sketch's brand system and Readymag's brand system put Blue beside #ef6f39, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Glossier (https://brandsweets.com/colors/brands/glossier-com). — https://brandsweets.com/colors/blue
- **Burlywood** #deb887 [pool] — Burlywood is paired with #ef6f39 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), Polaroid (https://brandsweets.com/palettes/light#polaroid), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/burlywood
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #ef6f39: 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), Cobalt Pop (https://brandsweets.com/palettes/bold#cobalt-pop), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #ef6f39: 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), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), JBL (https://brandsweets.com/colors/brands/jbl-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #ef6f39 in 7 real palettes, including Burger King's brand system and Pizza Hut's brand system, as the lead colour. Seen in: Burger King (https://brandsweets.com/colors/brands/bk-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com), Redfin (https://brandsweets.com/colors/brands/redfin-com). — https://brandsweets.com/colors/crimson

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

- On white (#ffffff): 3:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #cb4810 (4.69:1); AA: background → #2e2e2e (4.53:1); AAA: text → #9c380d (7.04:1); AAA: background → #000000 (7:1)
- On black (#000000): 7:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Hermès** — primary #f37021 (Δ 1.74) — https://brandsweets.com/colors/brands/hermes-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/ef6f39-c4ad9c-62cbb8-2d291f-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: "#ef6f39" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.