Color

#5557aa

#5557aa
hex#5557aa
rgbrgb(85, 87, 170)
hslhsl(239, 33%, 50%)
oklchoklch(0.497 0.13 279.5)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1165

Colors that go with #5557aa

Charcoal, Amber and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#aaa855

#5581aa · #7e55aa

#aa5557 · #57aa55

Split-complementary

Open in tool →

#aa7e55 · #81aa55

#aa5581 · #aaa855 · #55aa7e

Contrast

#5557aa as textRatioAAAA largeAAAFix
Aaon white
6.31:1passpassfail
  • AAA: use #4f509c as the text (7.09:1)
Aaon black
3.33:1failpassfail
  • AA: use #6d6eb6 as the text (4.56:1)
  • AAA: use #9293c8 as the text (7.23:1)
  • AA: or shift the background to #dbdbdb (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5557aa as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #5557aa
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #5557aa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5557aa-a09cc4-df964e-251f2d-e9edf1?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