Color

#a8151f

#a8151f
hex#a8151f
rgbrgb(168, 21, 31)
hslhsl(356, 78%, 37%)
oklchoklch(0.469 0.179 25.2)
Closest name: Blood Rush (#aa2222)Relative luminance 0.0896

Colors that go with #a8151f

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 →

#15a89e

#a81568 · #a85515

#1fa815 · #151fa8

Split-complementary

Open in tool →

#15a855 · #1568a8

#68a815 · #15a89e · #5515a8

Contrast

#a8151f as textRatioAAAA largeAAAFix
Aaon white
7.52:1passpasspassPasses AAA — no fix needed.
Aaon black
2.79:1failfailfail
  • AA: use #e4212e as the text (4.56:1)
  • AAA: use #ed6e76 as the text (7.09:1)
  • AA: or shift the background to #c9c9c9 (4.54:1)
  • AAA: or shift the background to #f7f7f7 (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 #a8151f as the background.

Brands using this color

Fonts for this mood

#a8151f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a8151f
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 #a8151f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a8151f-c49e9c-62cb91-2d241f-f1e9ee?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