Color

#c3d251

#c3d251
hex#c3d251
rgbrgb(195, 210, 81)
hslhsl(67, 59%, 57%)
oklchoklch(0.828 0.153 115.4)
Closest name: Badass Grass (#b4da55)Relative luminance 0.5829

Colors that go with #c3d251

Charcoal, Cornflower Blue and Deep Sky Blue 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 →

#6051d2

#d2a051 · #82d251

#51c3d2 · #d251c3

Split-complementary

Open in tool →

#5182d2 · #a051d2

#51d2a0 · #6051d2 · #d25182

Contrast

#c3d251 as textRatioAAAA largeAAAFix
Aaon white
1.66:1failfailfail
  • AA: use #6f7a1f as the text (4.69:1)
  • AAA: use #555d18 as the text (7.08:1)
  • AA: or shift the background to #545454 (4.56:1)
  • AAA: or shift the background to #383838 (7.07:1)
Aaon black
12.66:1passpasspassPasses 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 #c3d251 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 #c3d251
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 #c3d251 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c3d251-b8bea2-4e83df-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