brandsweets

Color

#bbfd21

#bbfd21
hex#bbfd21
rgbrgb(187, 253, 33)
hslhsl(78, 98%, 56%)
oklchoklch(0.916 0.229 126.7)
Closest name: Atomic Lime (#b9ff03)Relative luminance 0.8093
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
bbfd216321fd

#6321fd

Analogous

Open in tool →
bbfd21fdd1214dfd21

#fdd121 · #4dfd21

Triadic

Open in tool →
bbfd2121bbfdfd21bb

#21bbfd · #fd21bb

Split-complementary

Open in tool →
bbfd21214dfdd121fd

#214dfd · #d121fd

Tetradic

Open in tool →
bbfd2121fdd16321fdfd214d

#21fdd1 · #6321fd · #fd214d

Contrast

#bbfd21 as textRatioAAAA largeAAAFix
Aaon white
1.22:1failfailfail
  • AA: use #597e01 as the text (4.76:1)
  • AAA: use #436001 as the text (7.21:1)
  • AA: or shift the background to #666666 (4.7:1)
  • AAA: or shift the background to #4a4a4a (7.25:1)
Aaon black
17.19:1passpasspassPasses 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 #bbfd21 as the background.

Brands using this color

mcpConnect your agent — build around #bbfd21
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 #bbfd21 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bbfd21-b2bea2-4e69df-232d1f-f1f0e9?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