Color

#640be0

#640be0
hex#640be0
rgbrgb(100, 11, 224)
hslhsl(265, 91%, 46%)
oklchoklch(0.472 0.263 289.3)
Closest name: Electric Indigo (#6600ff)Relative luminance 0.0833

Colors that go with #640be0

Royal Blue, Charcoal and Olive Green lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#87e00b

#0b1ce0 · #ce0be0

#e0640b · #0be064

Split-complementary

Open in tool →

#e0ce0b · #1ce00b

#e00b1c · #87e00b · #0be0ce

Contrast

#640be0 as textRatioAAAA largeAAAFix
Aaon white
7.88:1passpasspassPasses AAA — no fix needed.
Aaon black
2.67:1failfailfail
  • AA: use #924bf7 as the text (4.57:1)
  • AAA: use #b07bf9 as the text (7.05:1)
  • AA: or shift the background to #c4c4c4 (4.52:1)
  • AAA: or shift the background to #f2f2f2 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #640be0 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

#640be0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #640be0
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #640be0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/640be0-b19cc4-dfd54e-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