Color

#f5dd66

#f5dd66
hex#f5dd66
rgbrgb(245, 221, 102)
hslhsl(50, 88%, 68%)
oklchoklch(0.895 0.141 98)
Closest name: Mustard Yellow (#ffdb58)Relative luminance 0.7208

Colors that go with #f5dd66

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#667ef5

#f59566 · #c5f566

#66f5dd · #dd66f5

Split-complementary

Open in tool →

#66c5f5 · #9566f5

#66f595 · #667ef5 · #f566c5

Contrast

#f5dd66 as textRatioAAAA largeAAAFix
Aaon white
1.36:1failfailfail
  • AA: use #8b7509 as the text (4.52:1)
  • AAA: use #655506 as the text (7.35:1)
  • AA: or shift the background to #616161 (4.55:1)
  • AAA: or shift the background to #454545 (7.04:1)
Aaon black
15.42:1passpasspassPasses 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 #f5dd66 as the background.

Brands using this color

Fonts for this mood

#f5dd66 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f5dd66
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 #f5dd66 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f5dd66-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