Color

#374ac3

#374ac3
hex#374ac3
rgbrgb(55, 74, 195)
hslhsl(232, 56%, 49%)
oklchoklch(0.472 0.189 270.4)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0965

Colors that go with #374ac3

Charcoal, Sea Green and Steel 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 →

#c3b037

#3790c3 · #6a37c3

#c3374a · #4ac337

Split-complementary

Open in tool →

#c36a37 · #90c337

#c33790 · #c3b037 · #37c36a

Contrast

#374ac3 as textRatioAAAA largeAAAFix
Aaon white
7.17:1passpasspassPasses AAA — no fix needed.
Aaon black
2.93:1failfailfail
  • AA: use #5c6cd1 as the text (4.52:1)
  • AAA: use #8893dd as the text (7.26:1)
  • AA: or shift the background to #cfcfcf (4.6:1)
  • AAA: or shift the background to #ffffff (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374ac3 as the background.

Brands using this color

Fonts for this mood

#374ac3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374ac3
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 #374ac3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374ac3-9c9dc4-df864e-231f2d-e9eef1?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