Color

#91100d

#91100d
hex#91100d
rgbrgb(145, 16, 13)
hslhsl(1, 84%, 31%)
oklchoklch(0.42 0.162 28.6)
Closest name: Brick Red (#8f1402)Relative luminance 0.0642

Colors that go with #91100d

Teal, Crimson and Denim 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 →

#0d8f91

#910d4d · #91510d

#0d910f · #0f0d91

Split-complementary

Open in tool →

#0d9151 · #0d4d91

#4d910d · #0d8f91 · #510d91

Contrast

#91100d as textRatioAAAA largeAAAFix
Aaon white
9.19:1passpasspassPasses AAA — no fix needed.
Aaon black
2.28:1failfailfail
  • AA: use #eb1814 as the text (4.67:1)
  • AAA: use #f26b69 as the text (7.08:1)
  • AA: or shift the background to #b8b8b8 (4.64:1)
  • AAA: or shift the background to #e3e3e3 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #91100d as the background.

Brands using this color

Fonts for this mood

#91100d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #91100d
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 #91100d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/91100d-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