Color

#efbb1f

#efbb1f
hex#efbb1f
rgbrgb(239, 187, 31)
hslhsl(45, 87%, 53%)
oklchoklch(0.817 0.161 87.5)
Closest name: Baklava (#efb435)Relative luminance 0.5399

Colors that go with #efbb1f

Charcoal, Cornflower Blue and Deep Sky Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#1f53ef

#ef531f · #bbef1f

#1fefbb · #bb1fef

Split-complementary

Open in tool →

#1fbbef · #531fef

#1fef53 · #1f53ef · #ef1fbb

Contrast

#efbb1f as textRatioAAAA largeAAAFix
Aaon white
1.78:1failfailfail
  • AA: use #94710a as the text (4.54:1)
  • AAA: use #6e5408 as the text (7.16:1)
  • AA: or shift the background to #4f4f4f (4.6:1)
  • AAA: or shift the background to #333333 (7.1:1)
Aaon black
11.8:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #efbb1f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#efbb1f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #efbb1f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #efbb1f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efbb1f-c4be9c-62afcb-2b2d1f-f1ebe9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md