Color

#37749a

#37749a
hex#37749a
rgbrgb(55, 116, 154)
hslhsl(203, 47%, 41%)
oklchoklch(0.535 0.087 238.7)
Closest name: Harbour Blue (#417491)Relative luminance 0.1564

Colors that go with #37749a

Charcoal, Royal Blue 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 →

#9a5d37

#379a8e · #37439a

#9a3774 · #749a37

Split-complementary

Open in tool →

#9a3743 · #9a8e37

#8e379a · #9a5d37 · #439a37

Contrast

#37749a as textRatioAAAA largeAAAFix
Aaon white
5.09:1passpassfail
  • AAA: use #2d5d7c as the text (7.07:1)
Aaon black
4.13:1failpassfail
  • AA: use #3b7da5 as the text (4.66:1)
  • AAA: use #5e9dc5 as the text (7.1:1)
  • AA: or shift the background to #f2f2f2 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37749a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#37749a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37749a
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 #37749a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37749a-9cb0c4-df4e5d-1f222d-e9f1f0?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