Color

#af3331

#af3331
hex#af3331
rgbrgb(175, 51, 49)
hslhsl(1, 56%, 44%)
oklchoklch(0.508 0.161 25.7)
Closest name: firebrick (#b22222)Relative luminance 0.117

Colors that go with #af3331

Royal Blue, Sea Green and Steel 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.

Real palettes that use #af3331

Tints & shades

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

Harmonies

Complementary

Open in tool →

#31adaf

#af316e · #af7231

#31af33 · #3331af

Split-complementary

Open in tool →

#31af72 · #316eaf

#6eaf31 · #31adaf · #7231af

Contrast

#af3331 as textRatioAAAA largeAAAFix
Aaon white
6.29:1passpassfail
  • AAA: use #9f2f2d as the text (7.2:1)
Aaon black
3.34:1failpassfail
  • AA: use #cb4a48 as the text (4.61:1)
  • AAA: use #da7d7c as the text (7.21:1)
  • AA: or shift the background to #dbdbdb (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #af3331 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#af3331 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #af3331
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 #af3331 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/af3331-c4a19c-62cb9a-2d261f-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