Color

#34384b

#34384b
hex#34384b
rgbrgb(52, 56, 75)
hslhsl(230, 18%, 25%)
oklchoklch(0.345 0.034 275.3)
Closest name: After Midnight (#38393f)Relative luminance 0.0407

Colors that go with #34384b

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 →

#4b4734

#34444b · #3c344b

#4b3438 · #384b34

Split-complementary

Open in tool →

#4b3c34 · #444b34

#4b3444 · #4b4734 · #344b3c

Contrast

#34384b as textRatioAAAA largeAAAFix
Aaon white
11.58:1passpasspassPasses AAA — no fix needed.
Aaon black
1.81:1failfailfail
  • AA: use #6c7399 as the text (4.55:1)
  • AAA: use #9095b2 as the text (7.13:1)
  • AA: or shift the background to #a3a3a3 (4.59:1)
  • AAA: or shift the background to #cccccc (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #34384b as the background.

Brands using this color

Fonts for this mood

#34384b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #34384b
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 #34384b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/34384b-9c9ec4-df814e-231f2d-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