Color

#673fa6

#673fa6
hex#673fa6
rgbrgb(103, 63, 166)
hslhsl(263, 45%, 45%)
oklchoklch(0.468 0.159 297.8)
Closest name: rebeccapurple (#663399)Relative luminance 0.0919

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7fa63f

#3f4ba6 · #9a3fa6

#a6673f · #3fa667

Split-complementary

Open in tool →

#a69a3f · #4ba63f

#a63f4b · #7fa63f · #3fa69a

Contrast

#673fa6 as textRatioAAAA largeAAAFix
Aaon white
7.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.84:1failfailfail
  • AA: use #8964c4 as the text (4.68:1)
  • AAA: use #a589d2 as the text (7.11:1)
  • AA: or shift the background to #cccccc (4.61:1)
  • AAA: or shift the background to #fafafa (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #673fa6 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

#673fa6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #673fa6
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 #673fa6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/673fa6-b09cc4-dfd04e-2b1f2d-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