Color

#512ea3

#512ea3
hex#512ea3
rgbrgb(81, 46, 163)
hslhsl(258, 56%, 41%)
oklchoklch(0.418 0.176 290.4)
Closest name: rebeccapurple (#663399)Relative luminance 0.0635

Tints & shades

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

Harmonies

Complementary

Open in tool →

#80a32e

#2e45a3 · #8c2ea3

#a3512e · #2ea351

Split-complementary

Open in tool →

#a38c2e · #45a32e

#a32e45 · #80a32e · #2ea38c

Contrast

#512ea3 as textRatioAAAA largeAAAFix
Aaon white
9.25:1passpasspassPasses AAA — no fix needed.
Aaon black
2.27:1failfailfail
  • AA: use #8260d2 as the text (4.55:1)
  • AAA: use #a188dd as the text (7.08:1)
  • AA: or shift the background to #b5b5b5 (4.51:1)
  • AAA: or shift the background to #e0e0e0 (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 #512ea3 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

#512ea3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #512ea3
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 #512ea3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/512ea3-ad9cc4-dfc44e-291f2d-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