Color

#37659a

#37659a
hex#37659a
rgbrgb(55, 101, 154)
hslhsl(212, 47%, 41%)
oklchoklch(0.499 0.099 253.3)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1245

Colors that go with #37659a

Charcoal, Sea Green and Sienna 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 →

#9a6c37

#37969a · #3b379a

#9a3765 · #659a37

Split-complementary

Open in tool →

#9a3b37 · #969a37

#9a3796 · #9a6c37 · #379a3b

Contrast

#37659a as textRatioAAAA largeAAAFix
Aaon white
6.02:1passpassfail
  • AAA: use #315987 as the text (7.22:1)
Aaon black
3.49:1failpassfail
  • AA: use #4177b4 as the text (4.52:1)
  • AAA: use #719bcc as the text (7.26:1)
  • AA: or shift the background to #e0e0e0 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37659a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#37659a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37659a
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 #37659a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37659a-9caac4-df564e-1f202d-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