Color

#394bd5

#394bd5
hex#394bd5
rgbrgb(57, 75, 213)
hslhsl(233, 65%, 53%)
oklchoklch(0.491 0.21 270.5)
Closest name: Blurple (#5539cc)Relative luminance 0.1071

Colors that go with #394bd5

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 #394bd5

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d5c339

#3999d5 · #7539d5

#d5394b · #4bd539

Split-complementary

Open in tool →

#d57539 · #99d539

#d53999 · #d5c339 · #39d575

Contrast

#394bd5 as textRatioAAAA largeAAAFix
Aaon white
6.69:1passpassfail
  • AAA: use #3144d3 as the text (7.25:1)
Aaon black
3.14:1failpassfail
  • AA: use #5b6adc as the text (4.54:1)
  • AAA: use #8590e5 as the text (7.12:1)
  • AA: or shift the background to #d4d4d4 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #394bd5 as the background.

Brands using this color

Fonts for this mood

#394bd5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #394bd5
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 #394bd5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/394bd5-9c9cc4-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