Color

#3e4fd0

#3e4fd0
hex#3e4fd0
rgbrgb(62, 79, 208)
hslhsl(233, 61%, 53%)
oklchoklch(0.496 0.198 271.3)
Closest name: Blurple (#5539cc)Relative luminance 0.1117

Colors that go with #3e4fd0

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 #3e4fd0

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d0bf3e

#3e98d0 · #763ed0

#d03e4f · #4fd03e

Split-complementary

Open in tool →

#d0763e · #98d03e

#d03e98 · #d0bf3e · #3ed076

Contrast

#3e4fd0 as textRatioAAAA largeAAAFix
Aaon white
6.49:1passpassfail
  • AAA: use #3648ce as the text (7.06:1)
Aaon black
3.23:1failpassfail
  • AA: use #5f6dd8 as the text (4.67:1)
  • AAA: use #8892e2 as the text (7.26:1)
  • AA: or shift the background to #d9d9d9 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e4fd0 as the background.

Brands using this color

Fonts for this mood

#3e4fd0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e4fd0
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 #3e4fd0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e4fd0-9c9cc4-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