Color

#274959

#274959
hex#274959
rgbrgb(39, 73, 89)
hslhsl(199, 39%, 25%)
oklchoklch(0.387 0.048 230.1)
Closest name: Charcoal (#36454f)Relative luminance 0.0592

Colors that go with #274959

Royal Blue, 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 →

#593727

#27594f · #273059

#592749 · #495927

Split-complementary

Open in tool →

#592730 · #594f27

#4f2759 · #593727 · #305927

Contrast

#274959 as textRatioAAAA largeAAAFix
Aaon white
9.62:1passpasspassPasses AAA — no fix needed.
Aaon black
2.18:1failfailfail
  • AA: use #437d98 as the text (4.63:1)
  • AAA: use #5f9db9 as the text (7.01:1)
  • AA: or shift the background to #b3b3b3 (4.59:1)
  • AAA: or shift the background to #dedede (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #274959 as the background.

Brands using this color

Fonts for this mood

#274959 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #274959
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 #274959 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/274959-9cb3c4-df4e66-1f232d-e9f1f0?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