Color

#cefa1e

#cefa1e
hex#cefa1e
rgbrgb(206, 250, 30)
hslhsl(72, 96%, 55%)
oklchoklch(0.921 0.218 121.9)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.8159

Colors that go with #cefa1e

Plum, Violet and 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 →

#4a1efa

#fab81e · #60fa1e

#1ecefa · #fa1ece

Split-complementary

Open in tool →

#1e60fa · #b81efa

#1efab8 · #4a1efa · #fa1e60

Contrast

#cefa1e as textRatioAAAA largeAAAFix
Aaon white
1.21:1failfailfail
  • AA: use #647d03 as the text (4.69:1)
  • AAA: use #4c5f02 as the text (7.13:1)
  • AA: or shift the background to #696969 (4.53:1)
  • AAA: or shift the background to #4a4a4a (7.31:1)
Aaon black
17.32:1passpasspassPasses 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 #cefa1e as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #cefa1e
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 #cefa1e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/cefa1e-b5bea2-4e77df-242d1f-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