Color

#d9171d

#d9171d
hex#d9171d
rgbrgb(217, 23, 29)
hslhsl(358, 81%, 47%)
oklchoklch(0.563 0.221 27.4)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1545

Colors that go with #d9171d

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 →

#17d9d2

#d9177e · #d97117

#1dd917 · #171dd9

Split-complementary

Open in tool →

#17d971 · #177ed9

#7ed917 · #17d9d2 · #7117d9

Contrast

#d9171d as textRatioAAAA largeAAAFix
Aaon white
5.13:1passpassfail
  • AAA: use #af1218 as the text (7.19:1)
Aaon black
4.09:1failpassfail
  • AA: use #e7181f as the text (4.55:1)
  • AAA: use #ef6b70 as the text (7.01:1)
  • AA: or shift the background to #f0f0f0 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #d9171d as the background.

Brands using this color

Fonts for this mood

#d9171d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d9171d
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 #d9171d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d9171d-c49f9c-62cb95-2d251f-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