Color

#673fab

#673fab
hex#673fab
rgbrgb(103, 63, 171)
hslhsl(262, 46%, 46%)
oklchoklch(0.472 0.165 296.6)
Closest name: rebeccapurple (#663399)Relative luminance 0.0938

Tints & shades

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

Harmonies

Complementary

Open in tool →

#84ab3f

#3f4eab · #9d3fab

#ab673f · #3fab67

Split-complementary

Open in tool →

#ab9d3f · #4eab3f

#ab3f4e · #84ab3f · #3fab9d

Contrast

#673fab as textRatioAAAA largeAAAFix
Aaon white
7.3:1passpasspassPasses AAA — no fix needed.
Aaon black
2.88:1failfailfail
  • AA: use #8763c5 as the text (4.62:1)
  • AAA: use #a388d3 as the text (7.02:1)
  • AA: or shift the background to #cccccc (4.55:1)
  • AAA: or shift the background to #fcfcfc (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #673fab 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

#673fab reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #673fab
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 #673fab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/673fab-af9cc4-dfce4e-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