Color

#ad2b25

#ad2b25
hex#ad2b25
rgbrgb(173, 43, 37)
hslhsl(3, 65%, 41%)
oklchoklch(0.495 0.168 27.8)
Closest name: firebrick (#b22222)Relative luminance 0.1075

Colors that go with #ad2b25

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.

Real palettes that use #ad2b25

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#25a6ad

#ad2562 · #ad6f25

#25ad2b · #2b25ad

Split-complementary

Open in tool →

#25ad6f · #2562ad

#62ad25 · #25a6ad · #6f25ad

Contrast

#ad2b25 as textRatioAAAA largeAAAFix
Aaon white
6.67:1passpassfail
  • AAA: use #a42923 as the text (7.19:1)
Aaon black
3.15:1failpassfail
  • AA: use #d43d35 as the text (4.52:1)
  • AAA: use #e17670 as the text (7.03:1)
  • AA: or shift the background to #d6d6d6 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ad2b25 as the background.

Brands using this color

Fonts for this mood

#ad2b25 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ad2b25
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 #ad2b25 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ad2b25-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