Color

#bbf901

#bbf901
hex#bbf901
rgbrgb(187, 249, 1)
hslhsl(75, 99%, 49%)
oklchoklch(0.906 0.23 125.8)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7832

Colors that go with #bbf901

Red, Plum and Violet 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 →

#3f01f9

#f9bb01 · #3ff901

#01bbf9 · #f901bb

Split-complementary

Open in tool →

#013ff9 · #bb01f9

#01f9bb · #3f01f9 · #f9013f

Contrast

#bbf901 as textRatioAAAA largeAAAFix
Aaon white
1.26:1failfailfail
  • AA: use #5f7f01 as the text (4.64:1)
  • AAA: use #486000 as the text (7.12:1)
  • AA: or shift the background to #666666 (4.56:1)
  • AAA: or shift the background to #4a4a4a (7.03:1)
Aaon black
16.66:1passpasspassPasses 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 #bbf901 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 #bbf901
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 #bbf901 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bbf901-b4bea2-4e70df-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