Color

#56aefb

#56aefb
hex#56aefb
rgbrgb(86, 174, 251)
hslhsl(208, 95%, 66%)
oklchoklch(0.73 0.141 247.5)
Closest name: Cerulean (#55aaee)Relative luminance 0.3922

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fba356

#56fbf5 · #565bfb

#fb56ae · #aefb56

Split-complementary

Open in tool →

#fb565b · #fbf556

#f556fb · #fba356 · #5bfb56

Contrast

#56aefb as textRatioAAAA largeAAAFix
Aaon white
2.37:1failfailfail
  • AA: use #0575d6 as the text (4.64:1)
  • AAA: use #0459a4 as the text (7.07:1)
  • AA: or shift the background to #3d3d3d (4.57:1)
  • AAA: or shift the background to #1c1c1c (7.18:1)
Aaon black
8.84:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #56aefb as the background.

Brands using this color

Fonts for this mood

#56aefb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #56aefb
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 #56aefb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/56aefb-9cadc4-df4e51-1f212d-e9f1f1?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