Color

#661aff

#661aff
hex#661aff
rgbrgb(102, 26, 255)
hslhsl(260, 100%, 55%)
oklchoklch(0.512 0.287 284.8)
Closest name: Electric Indigo (#6600ff)Relative luminance 0.1078

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b3ff1a

#1a40ff · #d91aff

#ff661a · #1aff66

Split-complementary

Open in tool →

#ffd91a · #40ff1a

#ff1a40 · #b3ff1a · #1affd9

Contrast

#661aff as textRatioAAAA largeAAAFix
Aaon white
6.65:1passpassfail
Aaon black
3.16:1failpassfail
  • AA: use #884dff as the text (4.55:1)
  • AAA: use #aa80ff as the text (7.24:1)
  • AA: or shift the background to #d6d6d6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #661aff 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

#661aff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #661aff
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 #661aff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/661aff-ae9cc4-dfc94e-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