Color

#53a1ea

#53a1ea
hex#53a1ea
rgbrgb(83, 161, 234)
hslhsl(209, 78%, 62%)
oklchoklch(0.691 0.133 248.9)
Closest name: Cerulean (#55aaee)Relative luminance 0.3327

Colors that go with #53a1ea

Charcoal, Medium Sea Green and Peru 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.

Real palettes that use #53a1ea

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ea9c53

#53eae7 · #5355ea

#ea53a1 · #a1ea53

Split-complementary

Open in tool →

#ea5355 · #eae753

#e753ea · #ea9c53 · #55ea53

Contrast

#53a1ea as textRatioAAAA largeAAAFix
Aaon white
2.74:1failfailfail
  • AA: use #1a78d1 as the text (4.51:1)
  • AAA: use #13599a as the text (7.18:1)
  • AA: or shift the background to #333333 (4.6:1)
  • AAA: or shift the background to #0d0d0d (7.08:1)
Aaon black
7.65:1passpasspassPasses 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 #53a1ea 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

#53a1ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #53a1ea
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 #53a1ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/53a1ea-9cacc4-df4e4e-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