Color

#ddfc31

#ddfc31
hex#ddfc31
rgbrgb(221, 252, 49)
hslhsl(69, 97%, 59%)
oklchoklch(0.937 0.208 118.7)
Closest name: Banana Flash (#eefe02)Relative luminance 0.8521

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f31fc

#fcb531 · #78fc31

#31ddfc · #fc31dd

Split-complementary

Open in tool →

#3178fc · #b531fc

#31fcb5 · #4f31fc · #fc3178

Contrast

#ddfc31 as textRatioAAAA largeAAAFix
Aaon white
1.16:1failfailfail
  • AA: use #6b7e02 as the text (4.55:1)
  • AAA: use #515f01 as the text (7.03:1)
  • AA: or shift the background to #6b6b6b (4.58:1)
  • AAA: or shift the background to #4f4f4f (7.04:1)
Aaon black
18.04:1passpasspassPasses 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 #ddfc31 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #ddfc31
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 #ddfc31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ddfc31-b7bea2-4e7edf-252d1f-f1eee9?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