Color

#ac1518

#ac1518
hex#ac1518
rgbrgb(172, 21, 24)
hslhsl(359, 78%, 38%)
oklchoklch(0.476 0.183 27.2)
Closest name: Blood Rush (#aa2222)Relative luminance 0.0937

Colors that go with #ac1518

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 →

#15acaa

#ac1563 · #ac5e15

#18ac15 · #1518ac

Split-complementary

Open in tool →

#15ac5e · #1563ac

#63ac15 · #15acaa · #5e15ac

Contrast

#ac1518 as textRatioAAAA largeAAAFix
Aaon white
7.31:1passpasspassPasses AAA — no fix needed.
Aaon black
2.87:1failfailfail
  • AA: use #e42124 as the text (4.54:1)
  • AAA: use #ed6e70 as the text (7.07:1)
  • AA: or shift the background to #cccccc (4.55:1)
  • AAA: or shift the background to #fcfcfc (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ac1518 as the background.

Brands using this color

Fonts for this mood

#ac1518 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ac1518
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 #ac1518 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ac1518-c4a09c-62cb96-2d251f-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