Color

#512d9f

#512d9f
hex#512d9f
rgbrgb(81, 45, 159)
hslhsl(259, 56%, 40%)
oklchoklch(0.413 0.173 291.4)
Closest name: rebeccapurple (#663399)Relative luminance 0.0613

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7b9f2d

#2d429f · #8a2d9f

#9f512d · #2d9f51

Split-complementary

Open in tool →

#9f8a2d · #429f2d

#9f2d42 · #7b9f2d · #2d9f8a

Contrast

#512d9f as textRatioAAAA largeAAAFix
Aaon white
9.43:1passpasspassPasses AAA — no fix needed.
Aaon black
2.23:1failfailfail
  • AA: use #8460d2 as the text (4.58:1)
  • AAA: use #a388dd as the text (7.12:1)
  • AA: or shift the background to #b5b5b5 (4.6:1)
  • AAA: or shift the background to #dedede (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #512d9f 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

#512d9f reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #512d9f
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 #512d9f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/512d9f-ad9cc4-dfc74e-2a1f2d-e9ebf1?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