Color

#374fa0

#374fa0
hex#374fa0
rgbrgb(55, 79, 160)
hslhsl(226, 49%, 42%)
oklchoklch(0.454 0.134 268.3)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0894

Colors that go with #374fa0

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 →

#a08737

#3784a0 · #5337a0

#a0374f · #4fa037

Split-complementary

Open in tool →

#a05337 · #84a037

#a03784 · #a08737 · #37a053

Contrast

#374fa0 as textRatioAAAA largeAAAFix
Aaon white
7.53:1passpasspassPasses AAA — no fix needed.
Aaon black
2.79:1failfailfail
  • AA: use #5871c6 as the text (4.59:1)
  • AAA: use #8295d4 as the text (7.2:1)
  • AA: or shift the background to #c9c9c9 (4.55:1)
  • AAA: or shift the background to #f7f7f7 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374fa0 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

#374fa0 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374fa0
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 #374fa0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374fa0-9ca1c4-df774e-221f2d-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