Color

#bfb503

#bfb503
hex#bfb503
rgbrgb(191, 181, 3)
hslhsl(57, 97%, 38%)
oklchoklch(0.757 0.161 105.6)
Closest name: Celery (#b4c04c)Relative luminance 0.4413

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#030cbf

#bf5803 · #6abf03

#03bfb5 · #b503bf

Split-complementary

Open in tool →

#036abf · #5803bf

#03bf58 · #030cbf · #bf036a

Contrast

#bfb503 as textRatioAAAA largeAAAFix
Aaon white
2.14:1failfailfail
  • AA: use #7e7702 as the text (4.64:1)
  • AAA: use #5f5b01 as the text (7.04:1)
  • AA: or shift the background to #424242 (4.7:1)
  • AAA: or shift the background to #262626 (7.08:1)
Aaon black
9.83:1passpasspassPasses 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 #bfb503 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

#bfb503 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #bfb503
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #bfb503 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bfb503-bcbea2-4e9bdf-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