Color

#bfbf31

#bfbf31
hex#bfbf31
rgbrgb(191, 191, 49)
hslhsl(60, 59%, 47%)
oklchoklch(0.78 0.155 109.5)
Closest name: Celery (#b4c04c)Relative luminance 0.4856

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3131bf

#bf7831 · #78bf31

#31bfbf · #bf31bf

Split-complementary

Open in tool →

#3178bf · #7831bf

#31bf78 · #3131bf · #bf3178

Contrast

#bfbf31 as textRatioAAAA largeAAAFix
Aaon white
1.96:1failfailfail
  • AA: use #7a7a1f as the text (4.53:1)
  • AAA: use #595917 as the text (7.33:1)
  • AA: or shift the background to #4a4a4a (4.52:1)
  • AAA: or shift the background to #2b2b2b (7.22:1)
Aaon black
10.71:1passpasspassPasses 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 #bfbf31 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 #bfbf31
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 #bfbf31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bfbf31-bbbea2-4e94df-272d1f-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