Color

#efb11f

#efb11f
hex#efb11f
rgbrgb(239, 177, 31)
hslhsl(42, 87%, 53%)
oklchoklch(0.797 0.158 82)
Closest name: Baklava (#efb435)Relative luminance 0.4989

Colors that go with #efb11f

Charcoal, Deep Sky Blue and Cadet 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 →

#1f5def

#ef491f · #c6ef1f

#1fefb1 · #b11fef

Split-complementary

Open in tool →

#1fc6ef · #491fef

#1fef49 · #1f5def · #ef1fc6

Contrast

#efb11f as textRatioAAAA largeAAAFix
Aaon white
1.91:1failfailfail
  • AA: use #996e0b as the text (4.58:1)
  • AAA: use #725208 as the text (7.18:1)
  • AA: or shift the background to #4a4a4a (4.63:1)
  • AAA: or shift the background to #2e2e2e (7.1:1)
Aaon black
10.98:1passpasspassPasses 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 #efb11f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#efb11f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #efb11f
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 #efb11f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efb11f-c4bc9c-62b4cb-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