Color

#c9d643

#c9d643
hex#c9d643
rgbrgb(201, 214, 67)
hslhsl(65, 64%, 55%)
oklchoklch(0.84 0.165 114.4)
Closest name: Bitter Lemon (#d2db32)Relative luminance 0.6092

Colors that go with #c9d643

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 →

#4f43d6

#d69843 · #80d643

#43c9d6 · #d643c9

Split-complementary

Open in tool →

#4380d6 · #9843d6

#43d698 · #4f43d6 · #d64380

Contrast

#c9d643 as textRatioAAAA largeAAAFix
Aaon white
1.59:1failfailfail
  • AA: use #71791b as the text (4.72:1)
  • AAA: use #565c14 as the text (7.15:1)
  • AA: or shift the background to #575757 (4.54:1)
  • AAA: or shift the background to #3b3b3b (7.03:1)
Aaon black
13.18:1passpasspassPasses 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 #c9d643 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 #c9d643
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 #c9d643 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c9d643-b8bea2-4e88df-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