Color

#27474f

#27474f
hex#27474f
rgbrgb(39, 71, 79)
hslhsl(192, 34%, 23%)
oklchoklch(0.377 0.04 215.6)
Closest name: Charcoal (#36454f)Relative luminance 0.055

Colors that go with #27474f

Dark Olive Green, Steel Blue and Sienna 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 →

#4f2f27

#274f43 · #27334f

#4f2747 · #474f27

Split-complementary

Open in tool →

#4f2733 · #4f4327

#43274f · #4f2f27 · #334f27

Contrast

#27474f as textRatioAAAA largeAAAFix
Aaon white
10:1passpasspassPasses AAA — no fix needed.
Aaon black
2.1:1failfailfail
  • AA: use #457e8c as the text (4.62:1)
  • AAA: use #5ea0b0 as the text (7.13:1)
  • AA: or shift the background to #b0b0b0 (4.61:1)
  • AAA: or shift the background to #d9d9d9 (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 #27474f as the background.

Brands using this color

Fonts for this mood

#27474f reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #27474f
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 #27474f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/27474f-a2b5be-df4e77-1f242d-e9f1ef?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