Color

#550dba

#550dba
hex#550dba
rgbrgb(85, 13, 186)
hslhsl(265, 87%, 39%)
oklchoklch(0.416 0.227 290.6)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0576

Tints & shades

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

Harmonies

Complementary

Open in tool →

#72ba0d

#0d1bba · #ac0dba

#ba550d · #0dba55

Split-complementary

Open in tool →

#baac0d · #1bba0d

#ba0d1b · #72ba0d · #0dbaac

Contrast

#550dba as textRatioAAAA largeAAAFix
Aaon white
9.75:1passpasspassPasses AAA — no fix needed.
Aaon black
2.15:1failfailfail
  • AA: use #934ff3 as the text (4.65:1)
  • AAA: use #b07ef6 as the text (7.16:1)
  • AA: or shift the background to #b3b3b3 (4.65:1)
  • AAA: or shift the background to #dbdbdb (7.05:1)

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

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

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

tool url/palettes/new/550dba-b19cc4-dfd54e-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