Color

#646ae3

#646ae3
hex#646ae3
rgbrgb(100, 106, 227)
hslhsl(237, 69%, 64%)
oklchoklch(0.583 0.18 277.1)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.1856

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e3dc64

#64aae3 · #9d64e3

#e3646a · #6ae364

Split-complementary

Open in tool →

#e39d64 · #aae364

#e364aa · #e3dc64 · #64e39d

Contrast

#646ae3 as textRatioAAAA largeAAAFix
Aaon white
4.46:1failpassfail
  • AA: use #6066e2 as the text (4.67:1)
  • AAA: use #3941db as the text (7.11:1)
  • AA: or shift the background to #050505 (4.57:1)
Aaon black
4.71:1passpassfail
  • AAA: use #8b8fea as the text (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #646ae3 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

#646ae3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #646ae3
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 #646ae3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/646ae3-9f9cc4-df924e-251f2d-e9edf1?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