Color

#34558d

#34558d
hex#34558d
rgbrgb(52, 85, 141)
hslhsl(218, 46%, 38%)
oklchoklch(0.453 0.1 260.4)
Closest name: Assassin (#2d4f83)Relative luminance 0.0915

Colors that go with #34558d

Charcoal, Sea Green and Amber 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.

Real palettes that use #34558d

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#8d6d34

#34828d · #40348d

#8d3455 · #558d34

Split-complementary

Open in tool →

#8d4034 · #828d34

#8d3482 · #8d6d34 · #348d40

Contrast

#34558d as textRatioAAAA largeAAAFix
Aaon white
7.42:1passpasspassPasses AAA — no fix needed.
Aaon black
2.83:1failfailfail
  • AA: use #4c76bd as the text (4.63:1)
  • AAA: use #7998cd as the text (7.19:1)
  • AA: or shift the background to #cccccc (4.62:1)
  • AAA: or shift the background to #fafafa (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #34558d 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

#34558d reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #34558d
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 #34558d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/34558d-9ca6c4-df644e-201f2d-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