# #ef9739

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

## Values

- Hex: `#ef9739`
- RGB: rgb(239, 151, 57)
- HSL: hsl(31, 85%, 58%)
- OKLCH: oklch(0.751 0.148 63.2)
- Relative luminance: 0.4078
- Nearest named color: darkorange (#ff8c00, Δ 3.38) — https://brandsweets.com/colors/darkorange
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ef9739

## Tints & shades

- Tints (toward white): #f0a14c, #f2ab5f, #f4b571, #f5bf84, #f7c897, #f8d2aa, #fadcbd, #fbe6d0, #fdf0e3, #fefaf6
- Shades (toward black): #ed8b21, #de7b12, #c66e10, #aa5e0e, #92510c, #7b440a, #5e3408, #472706, #2a1803, #130a02

## Harmonies

- Complementary: #3991ef
- Analogous: #ef3c39, #ecef39
- Triadic: #39ef97, #9739ef
- Split-complementary: #39ecef, #3c39ef
- Tetradic: #39ef3c, #3991ef, #ef39ec

## Colors that go with #ef9739

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 #ef9739: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Amazon (https://brandsweets.com/colors/brands/amazon-com), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/charcoal
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #ef9739: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [harmony, pool: complementary] — Deep Sky Blue sits directly opposite #ef9739 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Elastic (https://brandsweets.com/colors/brands/elastic-co), Mistral AI (https://brandsweets.com/colors/brands/mistral-ai), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/deepskyblue
- **Blue** #0000ff [pool] — 4 real palettes, including League of Legends's brand system and Sketch's brand system put Blue beside #ef9739, as the supporting colour. Seen in: League of Legends (https://brandsweets.com/colors/brands/leagueoflegends-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Binance (https://brandsweets.com/colors/brands/binance-com), Lexus (https://brandsweets.com/colors/brands/lexus-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #ef9739: 6 real palettes, including Open House and Paper & Pine, as the supporting colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Alpine (https://brandsweets.com/palettes/cool#alpine), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 6 real palettes, including Forest Floor and Woodsmoke put Champagne beside #ef9739, as that palette's text colour. Seen in: Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/champagne
- **Crimson** #dc143c [pool] — Crimson is paired with #ef9739 in 4 real palettes, including Tequila Sunrise and Retro Pop, as the lead colour. Seen in: Tequila Sunrise (https://brandsweets.com/palettes/vivid#tequila-sunrise), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Burger King (https://brandsweets.com/colors/brands/bk-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com). — https://brandsweets.com/colors/crimson
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #ef9739 in 5 real palettes, including Forest Floor and Undergrowth, as the supporting colour. Seen in: Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Farmers Market (https://brandsweets.com/palettes/warm#farmers-market), Cider (https://brandsweets.com/palettes/warm#cider). — https://brandsweets.com/colors/darkolivegreen

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

- On white (#ffffff): 2.29:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #af610e (4.63:1); AA: background → #404040 (4.52:1); AAA: text → #84490b (7.15:1); AAA: background → #212121 (7.02:1)
- On black (#000000): 9.16:1 — AA pass, AA-large pass, AAA pass

## 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/ef9739-c4b59c-62c7cb-2d2c1f-f1eae9?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: "#ef9739" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.