Color

#3843dc

#3843dc
hex#3843dc
rgbrgb(56, 67, 220)
hslhsl(236, 70%, 54%)
oklchoklch(0.484 0.228 271.2)
Closest name: Blurple (#5539cc)Relative luminance 0.1002

Colors that go with #3843dc

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 #3843dc

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dcd138

#3895dc · #7f38dc

#dc3843 · #43dc38

Split-complementary

Open in tool →

#dc7f38 · #95dc38

#dc3895 · #dcd138 · #38dc7f

Contrast

#3843dc as textRatioAAAA largeAAAFix
Aaon white
6.99:1passpassfail
  • AAA: use #333edb as the text (7.36:1)
Aaon black
3:1failpassfail
  • AA: use #5f67e3 as the text (4.54:1)
  • AAA: use #8a90ea as the text (7.26:1)
  • AA: or shift the background to #d1d1d1 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3843dc 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

#3843dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3843dc
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 #3843dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3843dc-9e9cc4-df8f4e-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