brandsweets

Color

#fbfb5b

#fbfb5b
hex#fbfb5b
rgbrgb(251, 251, 91)
hslhsl(60, 95%, 67%)
oklchoklch(0.96 0.176 109.3)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.9026
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
fbfb5b5b5bfb

#5b5bfb

Analogous

Open in tool →
fbfb5bfbab5babfb5b

#fbab5b · #abfb5b

Triadic

Open in tool →
fbfb5b5bfbfbfb5bfb

#5bfbfb · #fb5bfb

Split-complementary

Open in tool →
fbfb5b5babfbab5bfb

#5babfb · #ab5bfb

Tetradic

Open in tool →
fbfb5b5bfbab5b5bfbfb5bab

#5bfbab · #5b5bfb · #fb5bab

Contrast

#fbfb5b as textRatioAAAA largeAAAFix
Aaon white
1.1:1failfailfail
  • AA: use #777703 as the text (4.75:1)
  • AAA: use #5a5a02 as the text (7.25:1)
  • AA: or shift the background to #6e6e6e (4.63:1)
  • AAA: or shift the background to #525252 (7.09:1)
Aaon black
19.05:1passpasspassPasses 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 #fbfb5b as the background.

Brands using this color

mcpConnect your agent — build around #fbfb5b
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 #fbfb5b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fbfb5b-bbbea2-4e94df-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