Color

#37679a

#37679a
hex#37679a
rgbrgb(55, 103, 154)
hslhsl(211, 47%, 41%)
oklchoklch(0.504 0.097 251.6)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1285

Colors that go with #37679a

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 →

#9a6a37

#37989a · #39379a

#9a3767 · #679a37

Split-complementary

Open in tool →

#9a3937 · #989a37

#9a3798 · #9a6a37 · #379a39

Contrast

#37679a as textRatioAAAA largeAAAFix
Aaon white
5.88:1passpassfail
  • AAA: use #315a87 as the text (7.14:1)
Aaon black
3.57:1failpassfail
  • AA: use #4178b4 as the text (4.57:1)
  • AAA: use #6d9aca as the text (7.13:1)
  • AA: or shift the background to #e3e3e3 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37679a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#37679a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37679a
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 #37679a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37679a-9cabc4-df534e-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