Color

#ac3520

#ac3520
hex#ac3520
rgbrgb(172, 53, 32)
hslhsl(9, 69%, 40%)
oklchoklch(0.503 0.159 32.4)
Closest name: Brick (#a03623)Relative luminance 0.1142

Colors that go with #ac3520

Royal Blue, Sea Green and Teal 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 #ac3520

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2097ac

#ac2051 · #ac7b20

#20ac35 · #3520ac

Split-complementary

Open in tool →

#20ac7b · #2051ac

#51ac20 · #2097ac · #7b20ac

Contrast

#ac3520 as textRatioAAAA largeAAAFix
Aaon white
6.39:1passpassfail
  • AAA: use #9f311d as the text (7.16:1)
Aaon black
3.28:1failpassfail
  • AA: use #d34127 as the text (4.56:1)
  • AAA: use #e37764 as the text (7.09:1)
  • AA: or shift the background to #d9d9d9 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ac3520 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#ac3520 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ac3520
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 #ac3520 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ac3520-c4a79c-62cba8-2d271f-f1e9ec?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