Color

#f3de68

#f3de68
hex#f3de68
rgbrgb(243, 222, 104)
hslhsl(51, 85%, 68%)
oklchoklch(0.895 0.14 99.3)
Closest name: Mustard Yellow (#ffdb58)Relative luminance 0.723

Colors that go with #f3de68

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 #f3de68

Tints & shades

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

Harmonies

Complementary

Open in tool →

#687df3

#f39968 · #c2f368

#68f3de · #de68f3

Split-complementary

Open in tool →

#68c2f3 · #9968f3

#68f399 · #687df3 · #f368c2

Contrast

#f3de68 as textRatioAAAA largeAAAFix
Aaon white
1.36:1failfailfail
  • AA: use #89760b as the text (4.51:1)
  • AAA: use #635508 as the text (7.41:1)
  • AA: or shift the background to #616161 (4.56:1)
  • AAA: or shift the background to #454545 (7.06:1)
Aaon black
15.46:1passpasspassPasses 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 #f3de68 as the background.

Brands using this color

Fonts for this mood

#f3de68 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f3de68
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 #f3de68 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f3de68-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