Color

#374ad7

#374ad7
hex#374ad7
rgbrgb(55, 74, 215)
hslhsl(233, 67%, 53%)
oklchoklch(0.49 0.214 270.1)
Closest name: Blurple (#5539cc)Relative luminance 0.1062

Colors that go with #374ad7

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 #374ad7

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d7c537

#379ad7 · #7437d7

#d7374a · #4ad737

Split-complementary

Open in tool →

#d77437 · #9ad737

#d7379a · #d7c537 · #37d774

Contrast

#374ad7 as textRatioAAAA largeAAAFix
Aaon white
6.72:1passpassfail
Aaon black
3.12:1failpassfail
  • AA: use #5d6cdf as the text (4.68:1)
  • AAA: use #848fe7 as the text (7.06:1)
  • AA: or shift the background to #d4d4d4 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374ad7 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

#374ad7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374ad7
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 #374ad7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374ad7-9c9cc4-df884e-241f2d-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