Color

#642d8b

#642d8b
hex#642d8b
rgbrgb(100, 45, 139)
hslhsl(275, 51%, 36%)
oklchoklch(0.419 0.152 308)
Closest name: rebeccapurple (#663399)Relative luminance 0.0645

Colors that go with #642d8b

Crimson, Tomato 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 →

#548b2d

#352d8b · #8b2d83

#8b642d · #2d8b64

Split-complementary

Open in tool →

#838b2d · #2d8b35

#8b352d · #548b2d · #2d838b

Contrast

#642d8b as textRatioAAAA largeAAAFix
Aaon white
9.17:1passpasspassPasses AAA — no fix needed.
Aaon black
2.29:1failfailfail
  • AA: use #9856c8 as the text (4.5:1)
  • AAA: use #b484d7 as the text (7.22:1)
  • AA: or shift the background to #b8b8b8 (4.62:1)
  • AAA: or shift the background to #e3e3e3 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #642d8b 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

#642d8b reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #642d8b
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 #642d8b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/642d8b-b89cc4-c0cb62-2d1f2d-eae9f1?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