Color

#cff915

#cff915
hex#cff915
rgbrgb(207, 249, 21)
hslhsl(71, 95%, 53%)
oklchoklch(0.92 0.218 121.3)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.8107

Colors that go with #cff915

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 →

#3f15f9

#f9b115 · #5df915

#15cff9 · #f915cf

Split-complementary

Open in tool →

#155df9 · #b115f9

#15f9b1 · #3f15f9 · #f9155d

Contrast

#cff915 as textRatioAAAA largeAAAFix
Aaon white
1.22:1failfailfail
  • AA: use #667c03 as the text (4.72:1)
  • AAA: use #4e5e02 as the text (7.18:1)
  • AA: or shift the background to #696969 (4.5:1)
  • AAA: or shift the background to #4a4a4a (7.26:1)
Aaon black
17.21:1passpasspassPasses 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 #cff915 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #cff915
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 #cff915 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/cff915-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