Color

#373d49

#373d49
hex#373d49
rgbrgb(55, 61, 73)
hslhsl(220, 14%, 25%)
oklchoklch(0.359 0.022 264.2)
Closest name: After Midnight (#38393f)Relative luminance 0.0463

Colors that go with #373d49

Blue, Blush Pink and Burlywood 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 →

#494337

#374649 · #3a3749

#49373d · #3d4937

Split-complementary

Open in tool →

#493a37 · #464937

#493746 · #494337 · #37493a

Contrast

#373d49 as textRatioAAAA largeAAAFix
Aaon white
10.9:1passpasspassPasses AAA — no fix needed.
Aaon black
1.93:1failfailfail
  • AA: use #69758c as the text (4.52:1)
  • AAA: use #8e97a9 as the text (7.15:1)
  • AA: or shift the background to #a8a8a8 (4.59:1)
  • AAA: or shift the background to #d1d1d1 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #373d49 as the background.

Brands using this color

Fonts for this mood

#373d49 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #373d49
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 #373d49 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/373d49-9ca5c4-df694e-211f2d-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