Color

#5780cb

#5780cb
hex#5780cb
rgbrgb(87, 128, 203)
hslhsl(219, 53%, 57%)
oklchoklch(0.604 0.124 261.7)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2178

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cba357

#57bacb · #6957cb

#cb5780 · #80cb57

Split-complementary

Open in tool →

#cb6957 · #bacb57

#cb57ba · #cba357 · #57cb69

Contrast

#5780cb as textRatioAAAA largeAAAFix
Aaon white
3.92:1failpassfail
  • AA: use #4874c7 as the text (4.57:1)
  • AAA: use #30569c as the text (7.15:1)
  • AA: or shift the background to #171717 (4.57:1)
Aaon black
5.36:1passpassfail
  • AAA: use #7698d5 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5780cb 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

#5780cb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5780cb
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 #5780cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5780cb-9ca5c4-df664e-211f2d-e9f0f1?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