Color

#550fbd

#550fbd
hex#550fbd
rgbrgb(85, 15, 189)
hslhsl(264, 85%, 40%)
oklchoklch(0.42 0.229 289.8)
Closest name: Blurple (#5539cc)Relative luminance 0.0595

Tints & shades

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

Harmonies

Complementary

Open in tool →

#77bd0f

#0f21bd · #ab0fbd

#bd550f · #0fbd55

Split-complementary

Open in tool →

#bdab0f · #21bd0f

#bd0f21 · #77bd0f · #0fbdab

Contrast

#550fbd as textRatioAAAA largeAAAFix
Aaon white
9.59:1passpasspassPasses AAA — no fix needed.
Aaon black
2.19:1failfailfail
  • AA: use #9150f1 as the text (4.62:1)
  • AAA: use #ae80f5 as the text (7.21:1)
  • AA: or shift the background to #b3b3b3 (4.57:1)
  • AAA: or shift the background to #dedede (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #550fbd 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

#550fbd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #550fbd
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 #550fbd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/550fbd-b19cc4-dfd34e-2b1f2d-e9eaf1?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