Color

#b5b021

#b5b021
hex#b5b021
rgbrgb(181, 176, 33)
hslhsl(58, 69%, 42%)
oklchoklch(0.738 0.15 107.4)
Closest name: Citrus (#9fb70a)Relative luminance 0.4098

Colors that go with #b5b021

Charcoal, Cornflower Blue and Lilac 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 →

#2126b5

#b56621 · #70b521

#21b5b0 · #b021b5

Split-complementary

Open in tool →

#2170b5 · #6621b5

#21b566 · #2126b5 · #b52170

Contrast

#b5b021 as textRatioAAAA largeAAAFix
Aaon white
2.28:1failfailfail
  • AA: use #797516 as the text (4.81:1)
  • AAA: use #5a5811 as the text (7.4:1)
  • AA: or shift the background to #404040 (4.54:1)
  • AAA: or shift the background to #212121 (7.05:1)
Aaon black
9.2:1passpasspassPasses 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 #b5b021 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#b5b021 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b5b021
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 #b5b021 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b5b021-bcbea2-4e99df-282d1f-f1ede9?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