Color

#b9c059

#b9c059
hex#b9c059
rgbrgb(185, 192, 89)
hslhsl(64, 45%, 55%)
oklchoklch(0.781 0.127 112.5)
Closest name: Celery (#b4c04c)Relative luminance 0.4873

Colors that go with #b9c059

Charcoal, Lilac and 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 →

#5f59c0

#c09359 · #85c059

#59b9c0 · #c059b9

Split-complementary

Open in tool →

#5985c0 · #9359c0

#59c093 · #5f59c0 · #c05985

Contrast

#b9c059 as textRatioAAAA largeAAAFix
Aaon white
1.95:1failfailfail
  • AA: use #757a2e as the text (4.59:1)
  • AAA: use #595c23 as the text (7.05:1)
  • AA: or shift the background to #4a4a4a (4.54:1)
  • AAA: or shift the background to #2b2b2b (7.25:1)
Aaon black
10.75:1passpasspassPasses 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 #b9c059 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 #b9c059
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 #b9c059 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b9c059-b9bea2-4e8adf-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