Color

#4f3fd9

#4f3fd9
hex#4f3fd9
rgbrgb(79, 63, 217)
hslhsl(246, 67%, 55%)
oklchoklch(0.489 0.223 278.9)
Closest name: Blurple (#5539cc)Relative luminance 0.1023

Colors that go with #4f3fd9

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 →

#cad93f

#3f7dd9 · #9c3fd9

#d94f3f · #3fd94f

Split-complementary

Open in tool →

#d99c3f · #7dd93f

#d93f7d · #cad93f · #3fd99c

Contrast

#4f3fd9 as textRatioAAAA largeAAAFix
Aaon white
6.9:1passpassfail
  • AAA: use #4b3bd8 as the text (7.2:1)
Aaon black
3.05:1failpassfail
  • AA: use #7266e1 as the text (4.7:1)
  • AAA: use #958ce8 as the text (7.19:1)
  • AA: or shift the background to #d1d1d1 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4f3fd9 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

#4f3fd9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4f3fd9
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 #4f3fd9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4f3fd9-a59cc4-dfa74e-271f2d-e9ecf1?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