Color

#673acb

#673acb
hex#673acb
rgbrgb(103, 58, 203)
hslhsl(259, 58%, 51%)
oklchoklch(0.491 0.209 290.8)
Closest name: Blurple (#5539cc)Relative luminance 0.1022

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9dcb3a

#3a54cb · #b03acb

#cb673a · #3acb67

Split-complementary

Open in tool →

#cbb03a · #54cb3a

#cb3a54 · #9dcb3a · #3acbb0

Contrast

#673acb as textRatioAAAA largeAAAFix
Aaon white
6.9:1passpassfail
  • AAA: use #6436c9 as the text (7.21:1)
Aaon black
3.04:1failpassfail
  • AA: use #835ed4 as the text (4.52:1)
  • AAA: use #a286df as the text (7.01:1)
  • AA: or shift the background to #d1d1d1 (4.52:1)

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

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

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

tool url/palettes/new/673acb-ad9cc4-dfc74e-2a1f2d-e9ebf1?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