Color

#37608b

#37608b
hex#37608b
rgbrgb(55, 96, 139)
hslhsl(211, 43%, 38%)
oklchoklch(0.479 0.084 251)
Closest name: Blue Velvet (#0d6183)Relative luminance 0.1104

Colors that go with #37608b

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 →

#8b6237

#37898b · #39378b

#8b3760 · #608b37

Split-complementary

Open in tool →

#8b3937 · #898b37

#8b3789 · #8b6237 · #378b39

Contrast

#37608b as textRatioAAAA largeAAAFix
Aaon white
6.55:1passpassfail
  • AAA: use #345a83 as the text (7.15:1)
Aaon black
3.21:1failpassfail
  • AA: use #4679af as the text (4.61:1)
  • AAA: use #719ac6 as the text (7.14:1)
  • AA: or shift the background to #d6d6d6 (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 #37608b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#37608b reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37608b
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 #37608b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37608b-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