Color

#ac2f31

#ac2f31
hex#ac2f31
rgbrgb(172, 47, 49)
hslhsl(359, 57%, 43%)
oklchoklch(0.499 0.162 24.4)
Closest name: brown (#a52a2a)Relative luminance 0.1103

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2facaa

#ac2f70 · #ac6c2f

#31ac2f · #2f31ac

Split-complementary

Open in tool →

#2fac6c · #2f70ac

#70ac2f · #2facaa · #6c2fac

Contrast

#ac2f31 as textRatioAAAA largeAAAFix
Aaon white
6.55:1passpassfail
  • AAA: use #a42d2f as the text (7.01:1)
Aaon black
3.21:1failpassfail
  • AA: use #cd4749 as the text (4.59:1)
  • AAA: use #db7b7c as the text (7.14:1)
  • AA: or shift the background to #d6d6d6 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ac2f31 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

#ac2f31 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ac2f31
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 #ac2f31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ac2f31-c4a09c-62cb96-2d251f-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