Color

#a3050d

#a3050d
hex#a3050d
rgbrgb(163, 5, 13)
hslhsl(357, 94%, 33%)
oklchoklch(0.452 0.182 27.7)
Closest name: Bleeding Crimson (#9b1414)Relative luminance 0.0792

Colors that go with #a3050d

Royal Blue, Teal and Crimson 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 →

#05a39b

#a3055c · #a34c05

#0da305 · #050da3

Split-complementary

Open in tool →

#05a34c · #055ca3

#5ca305 · #05a39b · #4c05a3

Contrast

#a3050d as textRatioAAAA largeAAAFix
Aaon white
8.12:1passpasspassPasses AAA — no fix needed.
Aaon black
2.58:1failfailfail
  • AA: use #e90712 as the text (4.5:1)
  • AAA: use #fa666d as the text (7.19:1)
  • AA: or shift the background to #c2c2c2 (4.56:1)
  • AAA: or shift the background to #f0f0f0 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a3050d as the background.

Brands using this color

Fonts for this mood

#a3050d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a3050d
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 #a3050d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a3050d-c49f9c-62cb93-2d251f-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