Color

#1ded31

#1ded31
hex#1ded31
rgbrgb(29, 237, 49)
hslhsl(126, 85%, 52%)
oklchoklch(0.823 0.265 143.4)
Closest name: Becquerel (#4bec13)Relative luminance 0.6105

Colors that go with #1ded31

Violet, Deep Sky Blue and Hot Pink 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 →

#ed1dd8

#70ed1d · #1ded99

#311ded · #ed311d

Split-complementary

Open in tool →

#991ded · #ed1d70

#1d70ed · #ed1dd8 · #ed991d

Contrast

#1ded31 as textRatioAAAA largeAAAFix
Aaon white
1.59:1failfailfail
  • AA: use #0b8918 as the text (4.56:1)
  • AAA: use #086812 as the text (7:1)
  • AA: or shift the background to #575757 (4.55:1)
  • AAA: or shift the background to #3b3b3b (7.05:1)
Aaon black
13.21:1passpasspassPasses 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 #1ded31 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 #1ded31
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 #1ded31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1ded31-a2bea8-a74edf-1f2d27-ecf1e9?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