Color

#403121

#403121
hex#403121
rgbrgb(64, 49, 33)
hslhsl(31, 32%, 19%)
oklchoklch(0.325 0.034 68)
Closest name: Cola (#3c2f23)Relative luminance 0.034

Colors that go with #403121

Dark Olive Green, Steel Blue and Teal 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 #403121

Tints & shades

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

Harmonies

Complementary

Open in tool →

#213040

#402121 · #3f4021

#214031 · #312140

Split-complementary

Open in tool →

#213f40 · #212140

#214021 · #213040 · #40213f

Contrast

#403121 as textRatioAAAA largeAAAFix
Aaon white
12.51:1passpasspassPasses AAA — no fix needed.
Aaon black
1.68:1failfailfail
  • AA: use #916f4b as the text (4.58:1)
  • AAA: use #b3906b as the text (7.12:1)
  • AA: or shift the background to #9c9c9c (4.55:1)
  • AAA: or shift the background to #c2c2c2 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #403121 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

#403121 reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #403121
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 #403121 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/403121-c4b59c-62c7cb-2d2c1f-f1eae9?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