Color

#374da0

#374da0
hex#374da0
rgbrgb(55, 77, 160)
hslhsl(227, 49%, 42%)
oklchoklch(0.45 0.137 269.1)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0866

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#a08937

#3782a0 · #5437a0

#a0374d · #4da037

Split-complementary

Open in tool →

#a05437 · #82a037

#a03782 · #a08937 · #37a054

Contrast

#374da0 as textRatioAAAA largeAAAFix
Aaon white
7.69:1passpasspassPasses AAA — no fix needed.
Aaon black
2.73:1failfailfail
  • AA: use #5870c6 as the text (4.55:1)
  • AAA: use #8293d4 as the text (7.07:1)
  • AA: or shift the background to #c7c7c7 (4.55:1)
  • AAA: or shift the background to #f5f5f5 (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 #374da0 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

#374da0 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374da0
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #374da0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374da0-9ca0c4-df7a4e-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