Color

#59aef8

#59aef8
hex#59aef8
rgbrgb(89, 174, 248)
hslhsl(208, 92%, 66%)
oklchoklch(0.729 0.136 247.2)
Closest name: Cerulean (#55aaee)Relative luminance 0.3917

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f8a359

#59f8f3 · #595ef8

#f859ae · #aef859

Split-complementary

Open in tool →

#f8595e · #f8f359

#f359f8 · #f8a359 · #5ef859

Contrast

#59aef8 as textRatioAAAA largeAAAFix
Aaon white
2.38:1failfailfail
  • AA: use #0977d7 as the text (4.53:1)
  • AAA: use #0759a2 as the text (7.1:1)
  • AA: or shift the background to #3d3d3d (4.57:1)
  • AAA: or shift the background to #1c1c1c (7.17:1)
Aaon black
8.83:1passpasspassPasses 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 #59aef8 as the background.

Brands using this color

Fonts for this mood

#59aef8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #59aef8
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 #59aef8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/59aef8-9cadc4-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