Color

#a0210d

#a0210d
hex#a0210d
rgbrgb(160, 33, 13)
hslhsl(8, 85%, 34%)
oklchoklch(0.461 0.166 31.7)
Closest name: Antique Port Wine (#98211a)Relative luminance 0.0859

Colors that go with #a0210d

Royal Blue, Teal and Champagne 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 →

#0d8da0

#a00d43 · #a06a0d

#0da021 · #210da0

Split-complementary

Open in tool →

#0da06a · #0d43a0

#43a00d · #0d8da0 · #6a0da0

Contrast

#a0210d as textRatioAAAA largeAAAFix
Aaon white
7.73:1passpasspassPasses AAA — no fix needed.
Aaon black
2.72:1failfailfail
  • AA: use #e22e12 as the text (4.63:1)
  • AAA: use #f26e5a as the text (7.15:1)
  • AA: or shift the background to #c7c7c7 (4.57:1)
  • AAA: or shift the background to #f5f5f5 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a0210d as the background.

Brands using this color

Fonts for this mood

#a0210d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a0210d
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 #a0210d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a0210d-c4a69c-62cba6-2d271f-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