Color

#55519e

#55519e
hex#55519e
rgbrgb(85, 81, 158)
hslhsl(243, 32%, 47%)
oklchoklch(0.477 0.121 283.2)
Closest name: Freshly Purpleized (#5c5083)Relative luminance 0.1028

Colors that go with #55519e

Charcoal, Sea Green and Amber 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 →

#9a9e51

#51749e · #7c519e

#9e5551 · #519e55

Split-complementary

Open in tool →

#9e7c51 · #749e51

#9e5174 · #9a9e51 · #519e7c

Contrast

#55519e as textRatioAAAA largeAAAFix
Aaon white
6.87:1passpassfail
  • AAA: use #54509b as the text (7.01:1)
Aaon black
3.06:1failpassfail
  • AA: use #726eb4 as the text (4.6:1)
  • AAA: use #9390c6 as the text (7.05:1)
  • AA: or shift the background to #d4d4d4 (4.63:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #55519e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #55519e
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 #55519e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/55519e-a39cc4-dfa04e-261f2d-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