Color

#b5ef25

#b5ef25
hex#b5ef25
rgbrgb(181, 239, 37)
hslhsl(77, 86%, 54%)
oklchoklch(0.88 0.215 125.8)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7169

Colors that go with #b5ef25

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 →

#5e25ef

#efc325 · #51ef25

#25b5ef · #ef25b5

Split-complementary

Open in tool →

#2551ef · #c325ef

#25efc3 · #5e25ef · #ef2551

Contrast

#b5ef25 as textRatioAAAA largeAAAFix
Aaon white
1.37:1failfailfail
  • AA: use #5f800a as the text (4.59:1)
  • AAA: use #465f07 as the text (7.24:1)
  • AA: or shift the background to #616161 (4.52:1)
  • AAA: or shift the background to #454545 (7:1)
Aaon black
15.34:1passpasspassPasses 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 #b5ef25 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 #b5ef25
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 #b5ef25 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b5ef25-b3bea2-4e6bdf-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