Color

#651cd4

#651cd4
hex#651cd4
rgbrgb(101, 28, 212)
hslhsl(264, 77%, 47%)
oklchoklch(0.468 0.244 291.2)
Closest name: Blurple (#5539cc)Relative luminance 0.0835

Colors that go with #651cd4

Royal Blue, Charcoal and Deep Sky Blue 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 →

#8ad41c

#1c2ed4 · #c21cd4

#d4651c · #1cd465

Split-complementary

Open in tool →

#d4c21c · #2ed41c

#d41c2e · #8ad41c · #1cd4c2

Contrast

#651cd4 as textRatioAAAA largeAAAFix
Aaon white
7.86:1passpasspassPasses AAA — no fix needed.
Aaon black
2.67:1failfailfail
  • AA: use #8f53e9 as the text (4.58:1)
  • AAA: use #ad81ef as the text (7.16:1)
  • AA: or shift the background to #c4c4c4 (4.51:1)
  • AAA: or shift the background to #f2f2f2 (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 #651cd4 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

#651cd4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #651cd4
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 #651cd4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/651cd4-b19cc4-dfd34e-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