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

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

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 — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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