Color

#2a2f37

#2a2f37
hex#2a2f37
rgbrgb(42, 47, 55)
hslhsl(217, 13%, 19%)
oklchoklch(0.304 0.016 259.8)
Closest name: Nightmare Fuel (#293135)Relative luminance 0.028

Colors that go with #2a2f37

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 →

#37322a

#2a3537 · #2c2a37

#372a2f · #2f372a

Split-complementary

Open in tool →

#372c2a · #35372a

#372a35 · #37322a · #2a372c

Contrast

#2a2f37 as textRatioAAAA largeAAAFix
Aaon white
13.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.56:1failfailfail
  • AA: use #6a778a as the text (4.62:1)
  • AAA: use #8c96a6 as the text (7.03:1)
  • AA: or shift the background to #969696 (4.55:1)
  • AAA: or shift the background to #bdbdbd (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a2f37 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2a2f37 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a2f37
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 #2a2f37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a2f37-9ca7c4-df624e-201f2d-e9f0f1?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