Color

#bbf028

#bbf028
hex#bbf028
rgbrgb(187, 240, 40)
hslhsl(76, 87%, 55%)
oklchoklch(0.887 0.213 124.6)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7304

Colors that go with #bbf028

Blue, Crimson and Red 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 →

#5e28f0

#f0c128 · #57f028

#28bbf0 · #f028bb

Split-complementary

Open in tool →

#2857f0 · #c128f0

#28f0c1 · #5e28f0 · #f02857

Contrast

#bbf028 as textRatioAAAA largeAAAFix
Aaon white
1.35:1failfailfail
  • AA: use #618109 as the text (4.51:1)
  • AAA: use #485f07 as the text (7.2:1)
  • AA: or shift the background to #616161 (4.6:1)
  • AAA: or shift the background to #454545 (7.13:1)
Aaon black
15.61:1passpasspassPasses 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 #bbf028 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 #bbf028
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 #bbf028 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bbf028-b3bea2-4e6edf-232d1f-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