Color

#cee51f

#cee51f
hex#cee51f
rgbrgb(206, 229, 31)
hslhsl(67, 79%, 51%)
oklchoklch(0.875 0.196 117)
Closest name: Bitter Lemon (#d2db32)Relative luminance 0.6926

Colors that go with #cee51f

Charcoal, Cornflower Blue and Crimson 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 →

#361fe5

#e5991f · #6be51f

#1fcee5 · #e51fce

Split-complementary

Open in tool →

#1f6be5 · #991fe5

#1fe599 · #361fe5 · #e51f6b

Contrast

#cee51f as textRatioAAAA largeAAAFix
Aaon white
1.41:1failfailfail
  • AA: use #6f7b0e as the text (4.65:1)
  • AAA: use #525b0b as the text (7.34:1)
  • AA: or shift the background to #5e5e5e (4.59:1)
  • AAA: or shift the background to #424242 (7.11:1)
Aaon black
14.85:1passpasspassPasses 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 #cee51f 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 #cee51f
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 #cee51f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/cee51f-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