brandsweets

Color

#f9ff52

#f9ff52
hex#f9ff52
rgbrgb(249, 255, 82)
hslhsl(62, 100%, 66%)
oklchoklch(0.966 0.186 111.4)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.9227
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
f9ff525752ff

#5752ff

Analogous

Open in tool →
f9ff52ffae52a3ff52

#ffae52 · #a3ff52

Triadic

Open in tool →
f9ff5252f9ffff52f9

#52f9ff · #ff52f9

Split-complementary

Open in tool →
f9ff5252a3ffae52ff

#52a3ff · #ae52ff

Tetradic

Open in tool →
f9ff5252ffae5752ffff52a3

#52ffae · #5752ff · #ff52a3

Contrast

#f9ff52 as textRatioAAAA largeAAAFix
Aaon white
1.08:1failfailfail
  • AA: use #767a00 as the text (4.61:1)
  • AAA: use #595c00 as the text (7.11:1)
  • AA: or shift the background to #707070 (4.59:1)
  • AAA: or shift the background to #545454 (7.02:1)
Aaon black
19.45:1passpasspassPasses 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 #f9ff52 as the background.

Brands using this color

mcpConnect your agent — build around #f9ff52
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 #f9ff52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f9ff52-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