Color

#ad211f

#ad211f
hex#ad211f
rgbrgb(173, 33, 31)
hslhsl(1, 70%, 40%)
oklchoklch(0.486 0.176 27.4)
Closest name: Blood Rush (#aa2222)Relative luminance 0.1007

Colors that go with #ad211f

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 →

#1fabad

#ad1f64 · #ad681f

#1fad21 · #211fad

Split-complementary

Open in tool →

#1fad68 · #1f64ad

#64ad1f · #1fabad · #681fad

Contrast

#ad211f as textRatioAAAA largeAAAFix
Aaon white
6.97:1passpassfail
  • AAA: use #a9201e as the text (7.21:1)
Aaon black
3.01:1failpassfail
  • AA: use #db3633 as the text (4.59:1)
  • AAA: use #e67270 as the text (7.01:1)
  • AA: or shift the background to #d1d1d1 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ad211f as the background.

Brands using this color

Fonts for this mood

#ad211f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ad211f
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 #ad211f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ad211f-c4a19c-62cb9a-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