Color

#b5c440

#b5c440
hex#b5c440
rgbrgb(181, 196, 64)
hslhsl(67, 53%, 51%)
oklchoklch(0.784 0.154 115.6)
Closest name: Celery (#b4c04c)Relative luminance 0.4967

Colors that go with #b5c440

Charcoal, Cornflower Blue and Deep Sky 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 →

#4f40c4

#c49240 · #73c440

#40b5c4 · #c440b5

Split-complementary

Open in tool →

#4073c4 · #9240c4

#40c492 · #4f40c4 · #c44073

Contrast

#b5c440 as textRatioAAAA largeAAAFix
Aaon white
1.92:1failfailfail
  • AA: use #6f7925 as the text (4.73:1)
  • AAA: use #525a1c as the text (7.4:1)
  • AA: or shift the background to #4a4a4a (4.61:1)
  • AAA: or shift the background to #2e2e2e (7.07:1)
Aaon black
10.93:1passpasspassPasses 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 #b5c440 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 #b5c440
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 #b5c440 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b5c440-b8bea2-4e83df-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