Color

#3e6689

#3e6689
hex#3e6689
rgbrgb(62, 102, 137)
hslhsl(208, 38%, 39%)
oklchoklch(0.496 0.072 246.3)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1233

Colors that go with #3e6689

Charcoal, Sienna 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#89613e

#3e8987 · #3e4089

#893e66 · #66893e

Split-complementary

Open in tool →

#893e40 · #89873e

#873e89 · #89613e · #40893e

Contrast

#3e6689 as textRatioAAAA largeAAAFix
Aaon white
6.06:1passpassfail
  • AAA: use #375c7b as the text (7.05:1)
Aaon black
3.47:1failpassfail
  • AA: use #4a7ba5 as the text (4.67:1)
  • AAA: use #729cc0 as the text (7.23:1)
  • AA: or shift the background to #dedede (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e6689 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3e6689 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e6689
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 #3e6689 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e6689-9cadc4-df4e51-1f212d-e9f1f1?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