Color

#a41b13

#a41b13
hex#a41b13
rgbrgb(164, 27, 19)
hslhsl(3, 79%, 36%)
oklchoklch(0.464 0.173 29.2)
Closest name: Blood Rush (#aa2222)Relative luminance 0.0872

Colors that go with #a41b13

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 →

#139da4

#a41355 · #a46313

#13a41b · #1b13a4

Split-complementary

Open in tool →

#13a463 · #1355a4

#55a413 · #139da4 · #6313a4

Contrast

#a41b13 as textRatioAAAA largeAAAFix
Aaon white
7.65:1passpasspassPasses AAA — no fix needed.
Aaon black
2.74:1failfailfail
  • AA: use #e4251b as the text (4.58:1)
  • AAA: use #ed6f68 as the text (7.07:1)
  • AA: or shift the background to #c7c7c7 (4.53:1)
  • AAA: or shift the background to #f5f5f5 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a41b13 as the background.

Brands using this color

Fonts for this mood

#a41b13 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a41b13
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 #a41b13 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a41b13-c4a39c-62cb9d-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