Color

#f0fb5b

#f0fb5b
hex#f0fb5b
rgbrgb(240, 251, 91)
hslhsl(64, 95%, 67%)
oklchoklch(0.951 0.178 113.1)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.8827

Colors that go with #f0fb5b

Lilac, Blue and Charcoal 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 →

#665bfb

#fbb65b · #a0fb5b

#5bf0fb · #fb5bf0

Split-complementary

Open in tool →

#5ba0fb · #b65bfb

#5bfbb6 · #665bfb · #fb5ba0

Contrast

#f0fb5b as textRatioAAAA largeAAAFix
Aaon white
1.13:1failfailfail
  • AA: use #747c03 as the text (4.54:1)
  • AAA: use #545a02 as the text (7.39:1)
  • AA: or shift the background to #6e6e6e (4.53:1)
  • AAA: or shift the background to #4f4f4f (7.28:1)
Aaon black
18.65:1passpasspassPasses 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 #f0fb5b as the background.

Brands using this color

mcpConnect your agent — build around #f0fb5b
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 #f0fb5b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f0fb5b-b9bea2-4e8adf-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