Color

#de171b

#de171b
hex#de171b
rgbrgb(222, 23, 27)
hslhsl(359, 81%, 48%)
oklchoklch(0.573 0.225 27.8)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1622

Colors that go with #de171b

Charcoal, Royal Blue and Steel Blue 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 →

#17deda

#de177e · #de7717

#1bde17 · #171bde

Split-complementary

Open in tool →

#17de77 · #177ede

#7ede17 · #17deda · #7717de

Contrast

#de171b as textRatioAAAA largeAAAFix
Aaon white
4.95:1passpassfail
  • AAA: use #af1215 as the text (7.19:1)
Aaon black
4.24:1failpassfail
  • AA: use #e7181c as the text (4.55:1)
  • AAA: use #f07072 as the text (7.27:1)
  • AA: or shift the background to #f5f5f5 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #de171b as the background.

Brands using this color

Fonts for this mood

#de171b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #de171b
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 #de171b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/de171b-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