Color

#34394b

#34394b
hex#34394b
rgbrgb(52, 57, 75)
hslhsl(227, 18%, 25%)
oklchoklch(0.348 0.032 272.6)
Closest name: After Midnight (#38393f)Relative luminance 0.0416

Colors that go with #34394b

Dark Olive Green, Sea Green and Steel 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 →

#4b4634

#34454b · #3b344b

#4b3439 · #394b34

Split-complementary

Open in tool →

#4b3b34 · #454b34

#4b3445 · #4b4634 · #344b3b

Contrast

#34394b as textRatioAAAA largeAAAFix
Aaon white
11.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.83:1failfailfail
  • AA: use #6c7599 as the text (4.64:1)
  • AAA: use #9097b2 as the text (7.26:1)
  • AA: or shift the background to #a3a3a3 (4.54:1)
  • AAA: or shift the background to #cccccc (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #34394b as the background.

Brands using this color

Fonts for this mood

#34394b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #34394b
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 #34394b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/34394b-9ca0c4-df7a4e-221f2d-e9eff1?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