Color

#3a3133

#3a3133
hex#3a3133
rgbrgb(58, 49, 51)
hslhsl(347, 8%, 21%)
oklchoklch(0.324 0.013 2.8)
Closest name: Dark Charcoal (#333232)Relative luminance 0.0334

Colors that go with #3a3133

Amber, Blue and Blush Pink 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 →

#313a38

#3a3137 · #3a3431

#333a31 · #31333a

Split-complementary

Open in tool →

#313a34 · #31373a

#373a31 · #313a38 · #34313a

Contrast

#3a3133 as textRatioAAAA largeAAAFix
Aaon white
12.6:1passpasspassPasses AAA — no fix needed.
Aaon black
1.67:1failfailfail
  • AA: use #847175 as the text (4.6:1)
  • AAA: use #a49497 as the text (7.26:1)
  • AA: or shift the background to #9c9c9c (4.59:1)
  • AAA: or shift the background to #c2c2c2 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a3133 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3a3133 reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a3133
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 #3a3133 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a3133-c49ca0-62cb82-2d221f-f1e9ef?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