Color

#fcfc40

#fcfc40
hex#fcfc40
rgbrgb(252, 252, 64)
hslhsl(60, 97%, 62%)
oklchoklch(0.961 0.193 109.5)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.9069

Colors that go with #fcfc40

Lilac, Charcoal 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 →

#4040fc

#fc9e40 · #9efc40

#40fcfc · #fc40fc

Split-complementary

Open in tool →

#409efc · #9e40fc

#40fc9e · #4040fc · #fc409e

Contrast

#fcfc40 as textRatioAAAA largeAAAFix
Aaon white
1.1:1failfailfail
  • AA: use #797902 as the text (4.62:1)
  • AAA: use #5a5a01 as the text (7.25:1)
  • AA: or shift the background to #707070 (4.51:1)
  • AAA: or shift the background to #525252 (7.12:1)
Aaon black
19.14:1passpasspassPasses 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 #fcfc40 as the background.

Brands using this color

mcpConnect your agent — build around #fcfc40
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 #fcfc40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fcfc40-bbbea2-4e94df-272d1f-f1ede9?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