Color

#3e4e89

#3e4e89
hex#3e4e89
rgbrgb(62, 78, 137)
hslhsl(227, 38%, 39%)
oklchoklch(0.44 0.099 270.5)
Closest name: Assassin (#2d4f83)Relative luminance 0.0828

Colors that go with #3e4e89

Goldenrod, Midnight Blue 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.

Real palettes that use #3e4e89

Tints & shades

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

Harmonies

Complementary

Open in tool →

#89793e

#3e7489 · #533e89

#893e4e · #4e893e

Split-complementary

Open in tool →

#89533e · #74893e

#893e74 · #89793e · #3e8953

Contrast

#3e4e89 as textRatioAAAA largeAAAFix
Aaon white
7.91:1passpasspassPasses AAA — no fix needed.
Aaon black
2.66:1failfailfail
  • AA: use #6174b8 as the text (4.7:1)
  • AAA: use #8796c9 as the text (7.24:1)
  • AA: or shift the background to #c4c4c4 (4.53:1)
  • AAA: or shift the background to #f2f2f2 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e4e89 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

#3e4e89 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e4e89
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 #3e4e89 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e4e89-9ca0c4-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