Color

#374e53

#374e53
hex#374e53
rgbrgb(55, 78, 83)
hslhsl(191, 20%, 27%)
oklchoklch(0.407 0.029 212.6)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0689

Colors that go with #374e53

Blue, Blush Pink and Cadet Blue 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 →

#533c37

#37534a · #374053

#53374e · #4e5337

Split-complementary

Open in tool →

#533740 · #534a37

#4a3753 · #533c37 · #405337

Contrast

#374e53 as textRatioAAAA largeAAAFix
Aaon white
8.83:1passpasspassPasses AAA — no fix needed.
Aaon black
2.38:1failfailfail
  • AA: use #587c84 as the text (4.63:1)
  • AAA: use #789da5 as the text (7.16:1)
  • AA: or shift the background to #bababa (4.55:1)
  • AAA: or shift the background to #e6e6e6 (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 #374e53 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

#374e53 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374e53
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 #374e53 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374e53-a2b6be-df4e7a-1f252d-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