Color

#53afe4

#53afe4
hex#53afe4
rgbrgb(83, 175, 228)
hslhsl(202, 73%, 61%)
oklchoklch(0.72 0.116 236.8)
Closest name: Cerulean (#55aaee)Relative luminance 0.381

Colors that go with #53afe4

Charcoal, Peru 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 →

#e48853

#53e4d1 · #5366e4

#e453af · #afe453

Split-complementary

Open in tool →

#e45366 · #e4d153

#d153e4 · #e48853 · #66e453

Contrast

#53afe4 as textRatioAAAA largeAAAFix
Aaon white
2.44:1failfailfail
  • AA: use #1c7db5 as the text (4.52:1)
  • AAA: use #155e89 as the text (7.01:1)
  • AA: or shift the background to #3b3b3b (4.6:1)
  • AAA: or shift the background to #1a1a1a (7.14:1)
Aaon black
8.62:1passpasspassPasses 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 #53afe4 as the background.

Brands using this color

Fonts for this mood

#53afe4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #53afe4
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 #53afe4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/53afe4-9cb1c4-df4e5f-1f222d-e9f1f0?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