Color

#6738bc

#6738bc
hex#6738bc
rgbrgb(103, 56, 188)
hslhsl(261, 54%, 48%)
oklchoklch(0.476 0.194 294)
Closest name: Blurple (#5539cc)Relative luminance 0.0934

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8ebc38

#384cbc · #a938bc

#bc6738 · #38bc67

Split-complementary

Open in tool →

#bca938 · #4cbc38

#bc384c · #8ebc38 · #38bca9

Contrast

#6738bc as textRatioAAAA largeAAAFix
Aaon white
7.32:1passpasspassPasses AAA — no fix needed.
Aaon black
2.87:1failfailfail
  • AA: use #865ecf as the text (4.52:1)
  • AAA: use #a689dc as the text (7.23:1)
  • AA: or shift the background to #cccccc (4.56:1)
  • AAA: or shift the background to #fafafa (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6738bc as the background.

Brands using this color

Fonts for this mood

#6738bc reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6738bc
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 #6738bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6738bc-af9cc4-dfcb4e-2a1f2d-e9eaf1?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