Color

#374a72

#374a72
hex#374a72
rgbrgb(55, 74, 114)
hslhsl(221, 35%, 33%)
oklchoklch(0.412 0.072 264.2)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0692

Colors that go with #374a72

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 →

#725f37

#376772 · #413772

#723749 · #497237

Split-complementary

Open in tool →

#724137 · #677237

#723767 · #725f37 · #377241

Contrast

#374a72 as textRatioAAAA largeAAAFix
Aaon white
8.81:1passpasspassPasses AAA — no fix needed.
Aaon black
2.38:1failfailfail
  • AA: use #5a75af as the text (4.6:1)
  • AAA: use #8397c3 as the text (7.18:1)
  • AA: or shift the background to #bababa (4.54:1)
  • AAA: or shift the background to #e6e6e6 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374a72 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

#374a72 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374a72
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 #374a72 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374a72-9ca4c4-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