Color

#3c6586

#3c6586
hex#3c6586
rgbrgb(60, 101, 134)
hslhsl(207, 38%, 38%)
oklchoklch(0.491 0.07 244.2)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1199

Colors that go with #3c6586

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 →

#865d3c

#3c8682 · #3c4086

#863c65 · #65863c

Split-complementary

Open in tool →

#863c40 · #86823c

#823c86 · #865d3c · #40863c

Contrast

#3c6586 as textRatioAAAA largeAAAFix
Aaon white
6.18:1passpassfail
  • AAA: use #365a78 as the text (7.27:1)
Aaon black
3.4:1failpassfail
  • AA: use #497aa2 as the text (4.59:1)
  • AAA: use #6f9abe as the text (7.04:1)
  • AA: or shift the background to #dedede (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c6586 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3c6586 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3c6586
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 #3c6586 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c6586-9cadc4-df4e53-1f212d-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