Color

#3f3ccd

#3f3ccd
hex#3f3ccd
rgbrgb(63, 60, 205)
hslhsl(241, 59%, 52%)
oklchoklch(0.463 0.215 274.9)
Closest name: Blurple (#5539cc)Relative luminance 0.087

Colors that go with #3f3ccd

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cacd3c

#3c82cd · #873ccd

#cd3f3c · #3ccd3f

Split-complementary

Open in tool →

#cd873c · #82cd3c

#cd3c82 · #cacd3c · #3ccd87

Contrast

#3f3ccd as textRatioAAAA largeAAAFix
Aaon white
7.67:1passpasspassPasses AAA — no fix needed.
Aaon black
2.74:1failfailfail
  • AA: use #6b69d8 as the text (4.64:1)
  • AAA: use #8f8de2 as the text (7.08:1)
  • AA: or shift the background to #c7c7c7 (4.53:1)
  • AAA: or shift the background to #f5f5f5 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f3ccd 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

#3f3ccd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f3ccd
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 #3f3ccd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f3ccd-a19cc4-df9b4e-261f2d-e9edf1?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