Color

#c3e41b

#c3e41b
hex#c3e41b
rgbrgb(195, 228, 27)
hslhsl(70, 79%, 50%)
oklchoklch(0.865 0.2 119.9)
Closest name: Bitter Lemon (#d2db32)Relative luminance 0.6717

Colors that go with #c3e41b

Blue, Cornflower Blue and Crimson 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 →

#3c1be4

#e4a11b · #5ee41b

#1bc3e4 · #e41bc3

Split-complementary

Open in tool →

#1b5ee4 · #a11be4

#1be4a1 · #3c1be4 · #e41b5e

Contrast

#c3e41b as textRatioAAAA largeAAAFix
Aaon white
1.45:1failfailfail
  • AA: use #697b0e as the text (4.73:1)
  • AAA: use #4e5b0b as the text (7.43:1)
  • AA: or shift the background to #5c5c5c (4.6:1)
  • AAA: or shift the background to #404040 (7.13:1)
Aaon black
14.43:1passpasspassPasses 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 #c3e41b 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 #c3e41b
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 #c3e41b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c3e41b-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