Color

#ddf127

#ddf127
hex#ddf127
rgbrgb(221, 241, 39)
hslhsl(66, 88%, 55%)
oklchoklch(0.913 0.201 115.8)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7843

Colors that go with #ddf127

Charcoal, Crimson and Taupe 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 →

#3b27f1

#f1a027 · #78f127

#27ddf1 · #f127dd

Split-complementary

Open in tool →

#2778f1 · #a027f1

#27f1a0 · #3b27f1 · #f12778

Contrast

#ddf127 as textRatioAAAA largeAAAFix
Aaon white
1.26:1failfailfail
  • AA: use #717d08 as the text (4.53:1)
  • AAA: use #535b06 as the text (7.33:1)
  • AA: or shift the background to #666666 (4.56:1)
  • AAA: or shift the background to #4a4a4a (7.04:1)
Aaon black
16.69:1passpasspassPasses 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 #ddf127 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 #ddf127
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 #ddf127 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ddf127-b8bea2-4e86df-262d1f-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