Color

#313f3a

#313f3a
hex#313f3a
rgbrgb(49, 63, 58)
hslhsl(159, 13%, 22%)
oklchoklch(0.353 0.02 171.4)
Closest name: Black Olive (#3b3c36)Relative luminance 0.0451

Colors that go with #313f3a

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.

Real palettes that use #313f3a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3f3136

#313f33 · #313d3f

#3a313f · #3f3a31

Split-complementary

Open in tool →

#3f313d · #3f3331

#33313f · #3f3136 · #3d3f31

Contrast

#313f3a as textRatioAAAA largeAAAFix
Aaon white
11.04:1passpasspassPasses AAA — no fix needed.
Aaon black
1.9:1failfailfail
  • AA: use #5f7c72 as the text (4.61:1)
  • AAA: use #809d93 as the text (7.16:1)
  • AA: or shift the background to #a6a6a6 (4.53:1)
  • AAA: or shift the background to #cfcfcf (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #313f3a 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

#313f3a reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #313f3a
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 #313f3a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/313f3a-a2beb8-d459c0-1f2c2d-e9f1eb?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