Color

#5557be

#5557be
hex#5557be
rgbrgb(85, 87, 190)
hslhsl(239, 45%, 54%)
oklchoklch(0.511 0.158 278.4)
Closest name: slateblue (#6a5acd)Relative luminance 0.1247

Colors that go with #5557be

Charcoal, Sea Green and Amber 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 →

#bebd55

#558bbe · #8855be

#be5557 · #57be55

Split-complementary

Open in tool →

#be8855 · #8bbe55

#be558b · #bebd55 · #55be88

Contrast

#5557be as textRatioAAAA largeAAAFix
Aaon white
6.01:1passpassfail
  • AAA: use #4648b9 as the text (7.27:1)
Aaon black
3.49:1failpassfail
  • AA: use #6b6dc7 as the text (4.64:1)
  • AAA: use #9091d5 as the text (7.2:1)
  • AA: or shift the background to #e0e0e0 (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 #5557be 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

#5557be reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5557be
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 #5557be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5557be-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