Color

#5757bc

#5757bc
hex#5757bc
rgbrgb(87, 87, 188)
hslhsl(240, 43%, 54%)
oklchoklch(0.511 0.155 279.4)
Closest name: slateblue (#6a5acd)Relative luminance 0.1247

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bcbc57

#578abc · #8a57bc

#bc5757 · #57bc57

Split-complementary

Open in tool →

#bc8a57 · #8abc57

#bc578a · #bcbc57 · #57bc8a

Contrast

#5757bc as textRatioAAAA largeAAAFix
Aaon white
6.01:1passpassfail
  • AAA: use #4949b6 as the text (7.21:1)
Aaon black
3.49:1failpassfail
  • AA: use #6d6dc5 as the text (4.64:1)
  • AAA: use #9292d3 as the text (7.27:1)
  • 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 #5757bc 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

#5757bc reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5757bc
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 #5757bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5757bc-a19cc4-df994e-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