Color

#cfec51

#cfec51
hex#cfec51
rgbrgb(207, 236, 81)
hslhsl(71, 80%, 62%)
oklchoklch(0.894 0.179 119.3)
Closest name: Cucumber Milk (#c2f177)Relative luminance 0.7385

Colors that go with #cfec51

Charcoal, Plum and Cornflower 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 →

#6d51ec

#ecbb51 · #82ec51

#51cfec · #ec51cf

Split-complementary

Open in tool →

#5182ec · #bb51ec

#51ecbb · #6d51ec · #ec5182

Contrast

#cfec51 as textRatioAAAA largeAAAFix
Aaon white
1.33:1failfailfail
  • AA: use #687c0e as the text (4.69:1)
  • AAA: use #4d5c0a as the text (7.37:1)
  • AA: or shift the background to #636363 (4.51:1)
  • AAA: or shift the background to #454545 (7.2:1)
Aaon black
15.77:1passpasspassPasses 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 #cfec51 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 #cfec51
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 #cfec51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/cfec51-b6bea2-4e7adf-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