Color

#efb525

#efb525
hex#efb525
rgbrgb(239, 181, 37)
hslhsl(43, 86%, 54%)
oklchoklch(0.805 0.157 83.8)
Closest name: Baklava (#efb435)Relative luminance 0.5153

Colors that go with #efb525

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.

Real palettes that use #efb525

Tints & shades

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

Harmonies

Complementary

Open in tool →

#255eef

#ef5125 · #c3ef25

#25efb5 · #b525ef

Split-complementary

Open in tool →

#25c3ef · #5125ef

#25ef51 · #255eef · #ef25c3

Contrast

#efb525 as textRatioAAAA largeAAAFix
Aaon white
1.86:1failfailfail
  • AA: use #98700b as the text (4.51:1)
  • AAA: use #725409 as the text (7.03:1)
  • AA: or shift the background to #4d4d4d (4.55:1)
  • AAA: or shift the background to #303030 (7.11:1)
Aaon black
11.31:1passpasspassPasses 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 #efb525 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#efb525 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #efb525
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 #efb525 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efb525-c4bd9c-62b2cb-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