Color

#ffdd33

#ffdd33
hex#ffdd33
rgbrgb(255, 221, 51)
hslhsl(50, 100%, 60%)
oklchoklch(0.9 0.174 96.9)
Closest name: Angel’s Trumpet (#f6dd34)Relative luminance 0.7321

Colors that go with #ffdd33

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 →

#3355ff

#ff7733 · #bbff33

#33ffdd · #dd33ff

Split-complementary

Open in tool →

#33bbff · #7733ff

#33ff77 · #3355ff · #ff33bb

Contrast

#ffdd33 as textRatioAAAA largeAAAFix
Aaon white
1.34:1failfailfail
  • AA: use #8a7300 as the text (4.63:1)
  • AAA: use #665500 as the text (7.33:1)
  • AA: or shift the background to #616161 (4.61:1)
  • AAA: or shift the background to #454545 (7.14:1)
Aaon black
15.64:1passpasspassPasses 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 #ffdd33 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#ffdd33 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ffdd33
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 #ffdd33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ffdd33-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