Color

#f5fe4d

#f5fe4d
hex#f5fe4d
rgbrgb(245, 254, 77)
hslhsl(63, 99%, 65%)
oklchoklch(0.96 0.189 112.4)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.9083

Colors that go with #f5fe4d

Blue, Crimson and Taupe 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 →

#564dfe

#feaf4d · #9dfe4d

#4df5fe · #fe4df5

Split-complementary

Open in tool →

#4d9dfe · #af4dfe

#4dfeaf · #564dfe · #fe4d9d

Contrast

#f5fe4d as textRatioAAAA largeAAAFix
Aaon white
1.1:1failfailfail
  • AA: use #747a01 as the text (4.64:1)
  • AAA: use #575b00 as the text (7.24:1)
  • AA: or shift the background to #707070 (4.52:1)
  • AAA: or shift the background to #525252 (7.13:1)
Aaon black
19.17:1passpasspassPasses 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 #f5fe4d as the background.

Brands using this color

mcpConnect your agent — build around #f5fe4d
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 #f5fe4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f5fe4d-b9bea2-4e8ddf-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