Color

#6349ca

#6349ca
hex#6349ca
rgbrgb(99, 73, 202)
hslhsl(252, 55%, 54%)
oklchoklch(0.507 0.19 286.8)
Closest name: slateblue (#6a5acd)Relative luminance 0.1168

Colors that go with #6349ca

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 →

#b0ca49

#4970ca · #a449ca

#ca6349 · #49ca63

Split-complementary

Open in tool →

#caa449 · #70ca49

#ca4970 · #b0ca49 · #49caa4

Contrast

#6349ca as textRatioAAAA largeAAAFix
Aaon white
6.29:1passpassfail
  • AAA: use #593dc7 as the text (7.2:1)
Aaon black
3.34:1failpassfail
  • AA: use #7b65d2 as the text (4.63:1)
  • AAA: use #9d8cde as the text (7.24:1)
  • AA: or shift the background to #dbdbdb (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6349ca as the background.

Brands using this color

Fonts for this mood

#6349ca reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6349ca
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 #6349ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6349ca-a99cc4-dfb64e-281f2d-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