Color

#a91e19

#a91e19
hex#a91e19
rgbrgb(169, 30, 25)
hslhsl(2, 74%, 38%)
oklchoklch(0.476 0.175 28.3)
Closest name: Blood Rush (#aa2222)Relative luminance 0.0943

Colors that go with #a91e19

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 →

#19a4a9

#a9195c · #a96619

#19a91e · #1e19a9

Split-complementary

Open in tool →

#19a966 · #195ca9

#5ca919 · #19a4a9 · #6619a9

Contrast

#a91e19 as textRatioAAAA largeAAAFix
Aaon white
7.27:1passpasspassPasses AAA — no fix needed.
Aaon black
2.89:1failfailfail
  • AA: use #df2c26 as the text (4.53:1)
  • AAA: use #e9716d as the text (7.05:1)
  • AA: or shift the background to #cccccc (4.53:1)
  • AAA: or shift the background to #fcfcfc (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 #a91e19 as the background.

Brands using this color

Fonts for this mood

#a91e19 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a91e19
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 #a91e19 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a91e19-c4a29c-62cb9c-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