Color

#374cd7

#374cd7
hex#374cd7
rgbrgb(55, 76, 215)
hslhsl(232, 67%, 53%)
oklchoklch(0.493 0.212 269.8)
Closest name: Blurple (#5539cc)Relative luminance 0.1089

Colors that go with #374cd7

Charcoal, Sea Green and Amber 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.

Real palettes that use #374cd7

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d7c237

#379dd7 · #7237d7

#d7374c · #4cd737

Split-complementary

Open in tool →

#d77237 · #9dd737

#d7379d · #d7c237 · #37d772

Contrast

#374cd7 as textRatioAAAA largeAAAFix
Aaon white
6.61:1passpassfail
  • AAA: use #2e45d6 as the text (7.15:1)
Aaon black
3.18:1failpassfail
  • AA: use #596bde as the text (4.58:1)
  • AAA: use #8491e7 as the text (7.19:1)
  • AA: or shift the background to #d6d6d6 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374cd7 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

#374cd7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374cd7
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 #374cd7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374cd7-9c9dc4-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