Color

#6b63fd

#6b63fd
hex#6b63fd
rgbrgb(107, 99, 253)
hslhsl(243, 97%, 69%)
oklchoklch(0.595 0.221 279.6)
Closest name: mediumslateblue (#7b68ee)Relative luminance 0.1914

Colors that go with #6b63fd

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 →

#f5fd63

#63a8fd · #b863fd

#fd6b63 · #63fd6b

Split-complementary

Open in tool →

#fdb863 · #a8fd63

#fd63a8 · #f5fd63 · #63fdb8

Contrast

#6b63fd as textRatioAAAA largeAAAFix
Aaon white
4.35:1failpassfail
  • AA: use #665efd as the text (4.58:1)
  • AAA: use #362cfc as the text (7.18:1)
  • AA: or shift the background to #0a0a0a (4.55:1)
Aaon black
4.83:1passpassfail
  • AAA: use #918bfd as the text (7.32:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6b63fd as the background.

Brands using this color

Fonts for this mood

#6b63fd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6b63fd
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 #6b63fd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6b63fd-a39cc4-dfa04e-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