Color

#511ec8

#511ec8
hex#511ec8
rgbrgb(81, 30, 200)
hslhsl(258, 74%, 45%)
oklchoklch(0.437 0.232 285.2)
Closest name: Blurple (#5539cc)Relative luminance 0.0685

Tints & shades

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

Harmonies

Complementary

Open in tool →

#95c81e

#1e40c8 · #a61ec8

#c8511e · #1ec851

Split-complementary

Open in tool →

#c8a61e · #40c81e

#c81e40 · #95c81e · #1ec8a6

Contrast

#511ec8 as textRatioAAAA largeAAAFix
Aaon white
8.86:1passpasspassPasses AAA — no fix needed.
Aaon black
2.37:1failfailfail
  • AA: use #855be6 as the text (4.64:1)
  • AAA: use #a687ed as the text (7.31:1)
  • AA: or shift the background to #bababa (4.57:1)
  • AAA: or shift the background to #e6e6e6 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #511ec8 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

#511ec8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #511ec8
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 #511ec8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/511ec8-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