Color

#366891

#366891
hex#366891
rgbrgb(54, 104, 145)
hslhsl(207, 46%, 39%)
oklchoklch(0.501 0.085 245.4)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1273

Colors that go with #366891

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 →

#915f36

#36918d · #363a91

#913668 · #689136

Split-complementary

Open in tool →

#91363a · #918d36

#8d3691 · #915f36 · #3a9136

Contrast

#366891 as textRatioAAAA largeAAAFix
Aaon white
5.92:1passpassfail
  • AAA: use #2f5b7f as the text (7.18:1)
Aaon black
3.55:1failpassfail
  • AA: use #3f7bab as the text (4.63:1)
  • AAA: use #669bc7 as the text (7.08:1)
  • AA: or shift the background to #e3e3e3 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #366891 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#366891 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #366891
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 #366891 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/366891-9cadc4-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