Color

#bfb903

#bfb903
hex#bfb903
rgbrgb(191, 185, 3)
hslhsl(58, 97%, 38%)
oklchoklch(0.766 0.164 107.4)
Closest name: Celery (#b4c04c)Relative luminance 0.4578

Colors that go with #bfb903

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 →

#0309bf

#bf5b03 · #67bf03

#03bfb9 · #b903bf

Split-complementary

Open in tool →

#0367bf · #5b03bf

#03bf5b · #0309bf · #bf0367

Contrast

#bfb903 as textRatioAAAA largeAAAFix
Aaon white
2.07:1failfailfail
  • AA: use #7e7902 as the text (4.54:1)
  • AAA: use #5a5701 as the text (7.5:1)
  • AA: or shift the background to #454545 (4.64:1)
  • AAA: or shift the background to #292929 (7.04:1)
Aaon black
10.16:1passpasspassPasses 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 #bfb903 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

#bfb903 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #bfb903
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 #bfb903 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bfb903-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