Color

#b1c40e

#b1c40e
hex#b1c40e
rgbrgb(177, 196, 14)
hslhsl(66, 87%, 41%)
oklchoklch(0.779 0.177 116.6)
Closest name: yellowgreen (#9acd32)Relative luminance 0.4886

Colors that go with #b1c40e

Cornflower Blue, Crimson and Dark Orange 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 →

#200ec4

#c47b0e · #56c40e

#0eb1c4 · #c40eb1

Split-complementary

Open in tool →

#0e56c4 · #7b0ec4

#0ec47b · #200ec4 · #c40e56

Contrast

#b1c40e as textRatioAAAA largeAAAFix
Aaon white
1.95:1failfailfail
  • AA: use #707c09 as the text (4.59:1)
  • AAA: use #525b06 as the text (7.35:1)
  • AA: or shift the background to #4a4a4a (4.55:1)
  • AAA: or shift the background to #2b2b2b (7.26:1)
Aaon black
10.77:1passpasspassPasses 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 #b1c40e 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 #b1c40e
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 #b1c40e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b1c40e-b8bea2-4e86df-262d1f-f1eee9?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