Color

#ba030c

#ba030c
hex#ba030c
rgbrgb(186, 3, 12)
hslhsl(357, 97%, 37%)
oklchoklch(0.497 0.202 28.1)
Closest name: Bullseye (#b9030a)Relative luminance 0.1053

Tints & shades

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

Harmonies

Complementary

Open in tool →

#03bab1

#ba0368 · #ba5503

#0cba03 · #030cba

Split-complementary

Open in tool →

#03ba55 · #0368ba

#68ba03 · #03bab1 · #5503ba

Contrast

#ba030c as textRatioAAAA largeAAAFix
Aaon white
6.76:1passpassfail
  • AAA: use #b5030c as the text (7.04:1)
Aaon black
3.11:1failpassfail
  • AA: use #ec040f as the text (4.59:1)
  • AAA: use #fd636b as the text (7.17:1)
  • AA: or shift the background to #d4d4d4 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ba030c as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#ba030c reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ba030c
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 #ba030c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ba030c-c49f9c-62cb93-2d251f-f1e9ed?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