Color

#a3333f

#a3333f
hex#a3333f
rgbrgb(163, 51, 63)
hslhsl(354, 52%, 42%)
oklchoklch(0.49 0.147 18.4)
Closest name: brown (#a52a2a)Relative luminance 0.1051

Colors that go with #a3333f

Royal Blue, Teal and Champagne 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 #a3333f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#33a398

#a33376 · #a36033

#3fa333 · #333fa3

Split-complementary

Open in tool →

#33a360 · #3376a3

#76a333 · #33a398 · #6033a3

Contrast

#a3333f as textRatioAAAA largeAAAFix
Aaon white
6.77:1passpassfail
  • AAA: use #9f323d as the text (7.01:1)
Aaon black
3.1:1failpassfail
  • AA: use #c74d59 as the text (4.63:1)
  • AAA: use #d77f88 as the text (7.28:1)
  • AA: or shift the background to #d4d4d4 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a3333f as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#a3333f reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a3333f
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 #a3333f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a3333f-c49d9c-62cb8e-2d241f-f1e9ee?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