Color

#fcdf4f

#fcdf4f
hex#fcdf4f
rgbrgb(252, 223, 79)
hslhsl(50, 97%, 65%)
oklchoklch(0.903 0.16 97.6)
Closest name: Mustard Yellow (#ffdb58)Relative luminance 0.7404

Colors that go with #fcdf4f

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 →

#4f6cfc

#fc894f · #c3fc4f

#4ffcdf · #df4ffc

Split-complementary

Open in tool →

#4fc3fc · #894ffc

#4ffc89 · #4f6cfc · #fc4fc3

Contrast

#fcdf4f as textRatioAAAA largeAAAFix
Aaon white
1.33:1failfailfail
  • AA: use #887102 as the text (4.76:1)
  • AAA: use #695802 as the text (7.01:1)
  • AA: or shift the background to #636363 (4.52:1)
  • AAA: or shift the background to #454545 (7.22:1)
Aaon black
15.81:1passpasspassPasses 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 #fcdf4f as the background.

Brands using this color

Fonts for this mood

#fcdf4f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fcdf4f
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 #fcdf4f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fcdf4f-c4c29c-4eacdf-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