Color

#a91920

#a91920
hex#a91920
rgbrgb(169, 25, 32)
hslhsl(357, 74%, 38%)
oklchoklch(0.474 0.177 25.6)
Closest name: Blood Rush (#aa2222)Relative luminance 0.0923

Colors that go with #a91920

Royal Blue, Teal and Amber 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 →

#19a9a1

#a91968 · #a95a19

#20a919 · #1920a9

Split-complementary

Open in tool →

#19a95a · #1968a9

#68a919 · #19a9a1 · #5a19a9

Contrast

#a91920 as textRatioAAAA largeAAAFix
Aaon white
7.38:1passpasspassPasses AAA — no fix needed.
Aaon black
2.85:1failfailfail
  • AA: use #df2a33 as the text (4.52:1)
  • AAA: use #ea7177 as the text (7.13:1)
  • AA: or shift the background to #cccccc (4.59:1)
  • AAA: or shift the background to #fafafa (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a91920 as the background.

Brands using this color

Fonts for this mood

#a91920 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a91920
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 #a91920 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a91920-c49f9c-62cb93-2d251f-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