# #efb539

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

## Values

- Hex: `#efb539`
- RGB: rgb(239, 181, 57)
- HSL: hsl(41, 85%, 58%)
- OKLCH: oklch(0.806 0.148 82)
- Relative luminance: 0.5169
- Nearest named color: Baklava (#efb435, Δ 0.282) — https://brandsweets.com/colors/baklava
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/efb539

## Tints & shades

- Tints (toward white): #f0bc4c, #f2c35f, #f4ca71, #f5d184, #f7d897, #f8dfaa, #fae6bd, #fbedd0, #fdf4e3, #fefbf6
- Shades (toward black): #edad21, #de9d12, #c68c10, #aa780e, #92680c, #7b570a, #5e4308, #473206, #2a1e03, #130d02

## Harmonies

- Complementary: #3973ef
- Analogous: #ef5a39, #ceef39
- Triadic: #39efb5, #b539ef
- Split-complementary: #39ceef, #5a39ef
- Tetradic: #39ef5a, #3973ef, #ef39ce

## Colors that go with #efb539

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 #efb539: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Disney (https://brandsweets.com/colors/brands/disney-com), Coastal (https://brandsweets.com/palettes/cool#coastal), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: complementary] — Deep Sky Blue sits directly opposite #efb539 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Mistral AI (https://brandsweets.com/colors/brands/mistral-ai), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/deepskyblue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #efb539: 4 real palettes, including Open House and Coastal, as the supporting colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Coastal (https://brandsweets.com/palettes/cool#coastal), Diner (https://brandsweets.com/palettes/vivid#diner), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 5 real palettes, including Midnight Luxe and Coffee Bar put Champagne beside #efb539, as that palette's text colour. Seen in: Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/champagne
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #efb539: 6 real palettes, including Mastodon hosted on mastodon.social's brand system and Gopro's brand system, as the supporting colour. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Gopro (https://brandsweets.com/colors/brands/gopro-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #efb539 in 8 real palettes, including Tequila Sunrise and McDonald's's brand system, as the lead colour. Seen in: Tequila Sunrise (https://brandsweets.com/palettes/vivid#tequila-sunrise), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Tabloid (https://brandsweets.com/palettes/editorial#tabloid), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com). — https://brandsweets.com/colors/crimson
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #efb539 in 4 real palettes, including Farmers Market and Undergrowth, as the supporting colour. Seen in: Farmers Market (https://brandsweets.com/palettes/warm#farmers-market), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Miro (https://brandsweets.com/colors/brands/miro-com). — https://brandsweets.com/colors/darkolivegreen
- **Denim** #1560bd [pool] — Designers have shipped Denim with #efb539: 11 real palettes, including Wikipedia's brand system and Gopro's brand system, as the supporting colour. Seen in: Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Gopro (https://brandsweets.com/colors/brands/gopro-com), Open House (https://brandsweets.com/palettes/clean#open-house), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 1.85:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #9c6e0d (4.52:1); AA: background → #4d4d4d (4.56:1); AAA: text → #715009 (7.36:1); AAA: background → #303030 (7.13:1)
- On black (#000000): 11.34:1 — AA pass, AA-large pass, AAA pass

## Curated palettes containing it

- **Farmers Market** (warm, friendly, vivid) — #d9480f, #5c7c2f, #f2b134, #fffbf0, #2b1d0e — Tomato, leaf and honey — the three colors of a produce stand, warm enough to make anything look fresh. — tool: https://brandsweets.com/palettes/new/d9480f-5c7c2f-f2b134-fffbf0-2b1d0e — collection: https://brandsweets.com/palettes/warm
- **Maple** (autumn, warm, vivid) — #c1272d, #e8730c, #f2b705, #fff8ee, #2a1a0a — The three colours a maple goes through in October, on a warm white — loud, seasonal, and readable because the type is near-black. — tool: https://brandsweets.com/palettes/new/c1272d-e8730c-f2b705-fff8ee-2a1a0a — collection: https://brandsweets.com/palettes/autumn
- **Mid-Century** (vintage, retro, warm, muted) — #d9822b, #2f6f73, #e6b33d, #f7efdf, #2b2622 — Tangerine, teal and mustard on cream — the 1960s lounge trio, one of the few retro palettes with real hue contrast. — tool: https://brandsweets.com/palettes/new/d9822b-2f6f73-e6b33d-f7efdf-2b2622 — collection: https://brandsweets.com/palettes/vintage

## 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/efb539-c4bc9c-62b6cb-2c2d1f-f1ebe9?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: "#efb539" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.