Color

#ffdd00

#ffdd00
hex#ffdd00
rgbrgb(255, 221, 0)
hslhsl(52, 100%, 50%)
oklchoklch(0.899 0.186 97.9)
Closest name: gold (#ffd700)Relative luminance 0.7297

Colors that go with #ffdd00

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 →

#0022ff

#ff5e00 · #a2ff00

#00ffdd · #dd00ff

Split-complementary

Open in tool →

#00a2ff · #5d00ff

#00ff5e · #0022ff · #ff00a2

Contrast

#ffdd00 as textRatioAAAA largeAAAFix
Aaon white
1.35:1failfailfail
  • AA: use #857300 as the text (4.72:1)
  • AAA: use #665800 as the text (7.09:1)
  • AA: or shift the background to #616161 (4.6:1)
  • AAA: or shift the background to #454545 (7.12:1)
Aaon black
15.59:1passpasspassPasses 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 #ffdd00 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#ffdd00 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ffdd00
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 #ffdd00 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ffdd00-c4c39c-4ea7df-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