Color

#fdfa3f

#fdfa3f
hex#fdfa3f
rgbrgb(253, 250, 63)
hslhsl(59, 98%, 62%)
oklchoklch(0.958 0.191 108.6)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.8961

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3f42fd

#fd9b3f · #a1fd3f

#3ffdfa · #fa3ffd

Split-complementary

Open in tool →

#3fa1fd · #9b3ffd

#3ffd9b · #3f42fd · #fd3fa1

Contrast

#fdfa3f as textRatioAAAA largeAAAFix
Aaon white
1.11:1failfailfail
  • AA: use #797701 as the text (4.72:1)
  • AAA: use #5b5901 as the text (7.31:1)
  • AA: or shift the background to #6e6e6e (4.59:1)
  • AAA: or shift the background to #525252 (7.04:1)
Aaon black
18.92:1passpasspassPasses 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 #fdfa3f as the background.

Brands using this color

Fonts for this mood

#fdfa3f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fdfa3f
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 #fdfa3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fdfa3f-bbbea2-4e96df-272d1f-f1ede9?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