Color

#f5fb56

#f5fb56
hex#f5fb56
rgbrgb(245, 251, 86)
hslhsl(62, 95%, 66%)
oklchoklch(0.955 0.181 111.4)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.8908

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#5b56fb

#fbae56 · #a3fb56

#56f5fb · #fb56f5

Split-complementary

Open in tool →

#56a3fb · #ae56fb

#56fbae · #5b56fb · #fb56a3

Contrast

#f5fb56 as textRatioAAAA largeAAAFix
Aaon white
1.12:1failfailfail
  • AA: use #737703 as the text (4.81:1)
  • AAA: use #575a02 as the text (7.32:1)
  • AA: or shift the background to #6e6e6e (4.57:1)
  • AAA: or shift the background to #525252 (7:1)
Aaon black
18.82:1passpasspassPasses 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 #f5fb56 as the background.

Brands using this color

mcpConnect your agent — build around #f5fb56
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #f5fb56 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f5fb56-babea2-4e8fdf-272d1f-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