Color

#673b97

#673b97
hex#673b97
rgbrgb(103, 59, 151)
hslhsl(269, 44%, 41%)
oklchoklch(0.452 0.146 303)
Closest name: rebeccapurple (#663399)Relative luminance 0.0825

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6a973b

#3b3c97 · #953b97

#97673b · #3b9767

Split-complementary

Open in tool →

#97953b · #3c973b

#973b3c · #6a973b · #3b9795

Contrast

#673b97 as textRatioAAAA largeAAAFix
Aaon white
7.93:1passpasspassPasses AAA — no fix needed.
Aaon black
2.65:1failfailfail
  • AA: use #9061c2 as the text (4.67:1)
  • AAA: use #aa86d0 as the text (7.03:1)
  • AA: or shift the background to #c4c4c4 (4.54:1)
  • AAA: or shift the background to #f2f2f2 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #673b97 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

#673b97 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #673b97
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 #673b97 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/673b97-b49cc4-cbcb62-2c1f2d-e9e9f1?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