Color

#f3ff14

#f3ff14
hex#f3ff14
rgbrgb(243, 255, 20)
hslhsl(63, 100%, 54%)
oklchoklch(0.959 0.212 113.2)
Closest name: Busy Bee (#f4ff00)Relative luminance 0.9063

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2014ff

#ff9514 · #7eff14

#14f3ff · #ff14f3

Split-complementary

Open in tool →

#147eff · #9514ff

#14ff95 · #2014ff · #ff147e

Contrast

#f3ff14 as textRatioAAAA largeAAAFix
Aaon white
1.1:1failfailfail
  • AA: use #747a00 as the text (4.64:1)
  • AAA: use #575c00 as the text (7.15:1)
  • AA: or shift the background to #707070 (4.51:1)
  • AAA: or shift the background to #525252 (7.12:1)
Aaon black
19.13:1passpasspassPasses 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 #f3ff14 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #f3ff14
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 #f3ff14 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f3ff14-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