Color

#ddff33

#ddff33
hex#ddff33
rgbrgb(221, 255, 51)
hslhsl(70, 100%, 60%)
oklchoklch(0.943 0.211 119.4)
Closest name: Banana Flash (#eefe02)Relative luminance 0.8713

Colors that go with #ddff33

Blue, Crimson and Red 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 →

#5533ff

#ffbb33 · #77ff33

#33ddff · #ff33dd

Split-complementary

Open in tool →

#3377ff · #bb33ff

#33ffbb · #5533ff · #ff3377

Contrast

#ddff33 as textRatioAAAA largeAAAFix
Aaon white
1.14:1failfailfail
  • AA: use #667a00 as the text (4.83:1)
  • AAA: use #4d5c00 as the text (7.38:1)
  • AA: or shift the background to #6b6b6b (4.68:1)
  • AAA: or shift the background to #4f4f4f (7.19:1)
Aaon black
18.43:1passpasspassPasses 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 #ddff33 as the background.

Brands using this color

mcpConnect your agent — build around #ddff33
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 #ddff33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ddff33-b6bea2-4e7cdf-252d1f-f1efe9?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