brandsweets

Color

#f3ff52

#f3ff52
hex#f3ff52
rgbrgb(243, 255, 82)
hslhsl(64, 100%, 66%)
oklchoklch(0.961 0.188 113.3)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.9118
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
f3ff525d52ff

#5d52ff

Analogous

Open in tool →
f3ff52ffb4529dff52

#ffb452 · #9dff52

Triadic

Open in tool →
f3ff5252f3ffff52f3

#52f3ff · #ff52f3

Split-complementary

Open in tool →
f3ff52529dffb452ff

#529dff · #b452ff

Tetradic

Open in tool →
f3ff5252ffb45d52ffff529d

#52ffb4 · #5d52ff · #ff529d

Contrast

#f3ff52 as textRatioAAAA largeAAAFix
Aaon white
1.09:1failfailfail
  • AA: use #727a00 as the text (4.67:1)
  • AAA: use #565c00 as the text (7.18:1)
  • AA: or shift the background to #707070 (4.54:1)
  • AAA: or shift the background to #525252 (7.16:1)
Aaon black
19.24:1passpasspassPasses 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 #f3ff52 as the background.

Brands using this color

mcpConnect your agent — build around #f3ff52
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 #f3ff52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f3ff52-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