Color

#374b76

#374b76
hex#374b76
rgbrgb(55, 75, 118)
hslhsl(221, 36%, 34%)
oklchoklch(0.417 0.077 264.4)
Closest name: Assassin (#2d4f83)Relative luminance 0.0715

Colors that go with #374b76

Steel Blue, Blue and Cadet Blue 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 →

#766237

#376a76 · #433776

#76374b · #4b7637

Split-complementary

Open in tool →

#764337 · #6a7637

#76376a · #766237 · #377643

Contrast

#374b76 as textRatioAAAA largeAAAFix
Aaon white
8.64:1passpasspassPasses AAA — no fix needed.
Aaon black
2.43:1failfailfail
  • AA: use #5974b1 as the text (4.56:1)
  • AAA: use #8297c4 as the text (7.17:1)
  • AA: or shift the background to #bdbdbd (4.6:1)
  • AAA: or shift the background to #e8e8e8 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374b76 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#374b76 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374b76
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 #374b76 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374b76-9ca4c4-df6b4e-211f2d-e9eff1?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