Color

#40347f

#40347f
hex#40347f
rgbrgb(64, 52, 127)
hslhsl(250, 42%, 35%)
oklchoklch(0.381 0.122 286.4)
Closest name: Galactic Compass (#48357b)Relative luminance 0.0508

Colors that go with #40347f

Charcoal, Steel Blue and 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 →

#727f34

#344d7f · #66347f

#7f4034 · #347f40

Split-complementary

Open in tool →

#7f6634 · #4d7f34

#7f344d · #727f34 · #347f66

Contrast

#40347f as textRatioAAAA largeAAAFix
Aaon white
10.42:1passpasspassPasses AAA — no fix needed.
Aaon black
2.02:1failfailfail
  • AA: use #796bc2 as the text (4.7:1)
  • AAA: use #9a8fd1 as the text (7.22:1)
  • AA: or shift the background to #ababab (4.54:1)
  • AAA: or shift the background to #d4d4d4 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40347f 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

#40347f reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40347f
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 #40347f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40347f-a79cc4-dfb14e-281f2d-e9ecf1?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