Color

#681ce3

#681ce3
hex#681ce3
rgbrgb(104, 28, 227)
hslhsl(263, 78%, 50%)
oklchoklch(0.487 0.259 289.7)
Closest name: Electric Indigo (#6600ff)Relative luminance 0.0932

Tints & shades

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

Harmonies

Complementary

Open in tool →

#97e31c

#1c33e3 · #cc1ce3

#e3681c · #1ce368

Split-complementary

Open in tool →

#e3cc1c · #33e31c

#e31c33 · #97e31c · #1ce3cc

Contrast

#681ce3 as textRatioAAAA largeAAAFix
Aaon white
7.33:1passpasspassPasses AAA — no fix needed.
Aaon black
2.86:1failfailfail
  • AA: use #8c53ea as the text (4.54:1)
  • AAA: use #ab80ef as the text (7.07:1)
  • AA: or shift the background to #cccccc (4.57:1)
  • AAA: or shift the background to #fafafa (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #681ce3 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

#681ce3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #681ce3
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 #681ce3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/681ce3-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