Color

#bbf401

#bbf401
hex#bbf401
rgbrgb(187, 244, 1)
hslhsl(74, 99%, 48%)
oklchoklch(0.895 0.225 124.9)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7527

Colors that go with #bbf401

Plum, Violet and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3a01f4

#f4b301 · #42f401

#01bbf4 · #f401bb

Split-complementary

Open in tool →

#0142f4 · #b301f4

#01f4b3 · #3a01f4 · #f40142

Contrast

#bbf401 as textRatioAAAA largeAAAFix
Aaon white
1.31:1failfailfail
  • AA: use #617f01 as the text (4.62:1)
  • AAA: use #4a6000 as the text (7.08:1)
  • AA: or shift the background to #636363 (4.59:1)
  • AAA: or shift the background to #474747 (7.1:1)
Aaon black
16.05:1passpasspassPasses 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 #bbf401 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 #bbf401
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #bbf401 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bbf401-b4bea2-4e72df-242d1f-f1efe9?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