Color

#373949

#373949
hex#373949
rgbrgb(55, 57, 73)
hslhsl(233, 14%, 25%)
oklchoklch(0.349 0.028 279.3)
Closest name: After Midnight (#38393f)Relative luminance 0.0422

Colors that go with #373949

Amber, Blue and Blush Pink 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 →

#494737

#374249 · #3e3749

#493739 · #394937

Split-complementary

Open in tool →

#493e37 · #424937

#493742 · #494737 · #37493e

Contrast

#373949 as textRatioAAAA largeAAAFix
Aaon white
11.39:1passpasspassPasses AAA — no fix needed.
Aaon black
1.84:1failfailfail
  • AA: use #717594 as the text (4.67:1)
  • AAA: use #9194ac as the text (7.04:1)
  • AA: or shift the background to #a3a3a3 (4.51:1)
  • AAA: or shift the background to #cccccc (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #373949 as the background.

Brands using this color

Fonts for this mood

#373949 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #373949
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 #373949 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/373949-9c9cc4-df884e-241f2d-e9eef1?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