Color

#3d345b

#3d345b
hex#3d345b
rgbrgb(61, 52, 91)
hslhsl(254, 27%, 28%)
oklchoklch(0.353 0.067 293.3)
Closest name: Call It a Night (#42364c)Relative luminance 0.042

Colors that go with #3d345b

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 →

#525b34

#343e5b · #50345b

#5b3d34 · #345b3d

Split-complementary

Open in tool →

#5b5034 · #3e5b34

#5b343e · #525b34 · #345b50

Contrast

#3d345b as textRatioAAAA largeAAAFix
Aaon white
11.41:1passpasspassPasses AAA — no fix needed.
Aaon black
1.84:1failfailfail
  • AA: use #7c6dab as the text (4.63:1)
  • AAA: use #9c91c0 as the text (7.22:1)
  • AA: or shift the background to #a3a3a3 (4.52:1)
  • AAA: or shift the background to #cccccc (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d345b 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

#3d345b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d345b
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 #3d345b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d345b-aa9cc4-dfbb4e-291f2d-e9ebf1?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