Color

#a3170a

#a3170a
hex#a3170a
rgbrgb(163, 23, 10)
hslhsl(5, 88%, 34%)
oklchoklch(0.459 0.175 30.1)
Closest name: Bleeding Crimson (#9b1414)Relative luminance 0.0842

Colors that go with #a3170a

Royal Blue, Teal and Crimson 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0a96a3

#a30a4a · #a3630a

#0aa317 · #170aa3

Split-complementary

Open in tool →

#0aa363 · #0a4aa3

#4aa30a · #0a96a3 · #630aa3

Contrast

#a3170a as textRatioAAAA largeAAAFix
Aaon white
7.82:1passpasspassPasses AAA — no fix needed.
Aaon black
2.68:1failfailfail
  • AA: use #e6210f as the text (4.59:1)
  • AAA: use #f5695c as the text (7.06:1)
  • AA: or shift the background to #c7c7c7 (4.63:1)
  • AAA: or shift the background to #f5f5f5 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a3170a as the background.

Brands using this color

Fonts for this mood

#a3170a reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a3170a
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 #a3170a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a3170a-c4a49c-62cba1-2d261f-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