Color

#34313f

#34313f
hex#34313f
rgbrgb(52, 49, 63)
hslhsl(253, 13%, 22%)
oklchoklch(0.322 0.025 294.8)
Closest name: Dark Charcoal (#333232)Relative luminance 0.0329

Colors that go with #34313f

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 →

#3c3f31

#31353f · #3b313f

#3f3431 · #313f34

Split-complementary

Open in tool →

#3f3b31 · #353f31

#3f3135 · #3c3f31 · #313f3b

Contrast

#34313f as textRatioAAAA largeAAAFix
Aaon white
12.67:1passpasspassPasses AAA — no fix needed.
Aaon black
1.66:1failfailfail
  • AA: use #797292 as the text (4.63:1)
  • AAA: use #9792ab as the text (7.02:1)
  • AA: or shift the background to #9c9c9c (4.62:1)
  • AAA: or shift the background to #c2c2c2 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #34313f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#34313f reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #34313f
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 #34313f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/34313f-a99cc4-dfb84e-281f2d-e9ebf1?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