Color

#6368ca

#6368ca
hex#6368ca
rgbrgb(99, 104, 202)
hslhsl(237, 49%, 59%)
oklchoklch(0.562 0.149 278.3)
Closest name: slateblue (#6a5acd)Relative luminance 0.1682

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cac563

#639cca · #9163ca

#ca6368 · #68ca63

Split-complementary

Open in tool →

#ca9163 · #9cca63

#ca639c · #cac563 · #63ca91

Contrast

#6368ca as textRatioAAAA largeAAAFix
Aaon white
4.81:1passpassfail
  • AAA: use #4147be as the text (7.32:1)
Aaon black
4.36:1failpassfail
  • AA: use #676ccb as the text (4.58:1)
  • AAA: use #8d91d8 as the text (7.17:1)
  • AA: or shift the background to #fafafa (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6368ca as the background.

Brands using this color

Fonts for this mood

#6368ca reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6368ca
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 #6368ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6368ca-9f9cc4-df924e-251f2d-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