Color

#6343ef

#6343ef
hex#6343ef
rgbrgb(99, 67, 239)
hslhsl(251, 84%, 60%)
oklchoklch(0.531 0.241 283)
Closest name: Meteor Shower (#5533ff)Relative luminance 0.129

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cfef43

#437aef · #b843ef

#ef6343 · #43ef63

Split-complementary

Open in tool →

#efb843 · #7aef43

#ef437a · #cfef43 · #43efb8

Contrast

#6343ef as textRatioAAAA largeAAAFix
Aaon white
5.87:1passpassfail
  • AAA: use #4f2ced as the text (7.2:1)
Aaon black
3.58:1failpassfail
  • AA: use #765bf1 as the text (4.54:1)
  • AAA: use #9985f4 as the text (7.02:1)
  • AA: or shift the background to #e3e3e3 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6343ef 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

#6343ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6343ef
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #6343ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6343ef-a89cc4-dfb34e-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