Color

#efdc71

#efdc71
hex#efdc71
rgbrgb(239, 220, 113)
hslhsl(51, 80%, 69%)
oklchoklch(0.889 0.13 99.4)
Closest name: Mustard Yellow (#ffdb58)Relative luminance 0.7073

Colors that go with #efdc71

Charcoal, Deep Sky Blue and Lilac 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 #efdc71

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7184ef

#ef9d71 · #c3ef71

#71efdc · #dc71ef

Split-complementary

Open in tool →

#71c3ef · #9d71ef

#71ef9d · #7184ef · #ef71c3

Contrast

#efdc71 as textRatioAAAA largeAAAFix
Aaon white
1.39:1failfailfail
  • AA: use #85730f as the text (4.71:1)
  • AAA: use #65580b as the text (7.11:1)
  • AA: or shift the background to #5e5e5e (4.68:1)
  • AAA: or shift the background to #424242 (7.25:1)
Aaon black
15.15:1passpasspassPasses 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 #efdc71 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#efdc71 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #efdc71
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 #efdc71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efdc71-c4c29c-4eaadf-292d1f-f1ece9?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