Color

#2f4356

#2f4356
hex#2f4356
rgbrgb(47, 67, 86)
hslhsl(209, 29%, 26%)
oklchoklch(0.374 0.041 247.7)
Closest name: Charcoal (#36454f)Relative luminance 0.0529

Colors that go with #2f4356

Dark Olive Green, Teal 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 →

#56422f

#2f5655 · #2f3056

#562f43 · #43562f

Split-complementary

Open in tool →

#562f30 · #56552f

#552f56 · #56422f · #30562f

Contrast

#2f4356 as textRatioAAAA largeAAAFix
Aaon white
10.2:1passpasspassPasses AAA — no fix needed.
Aaon black
2.06:1failfailfail
  • AA: use #55799b as the text (4.59:1)
  • AAA: use #7b9ab7 as the text (7.15:1)
  • AA: or shift the background to #adadad (4.55:1)
  • AAA: or shift the background to #d6d6d6 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f4356 as the background.

Brands using this color

Fonts for this mood

#2f4356 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f4356
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 #2f4356 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f4356-9cacc4-df4e4e-1f212d-e9f1f1?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