Color

#53b5df

#53b5df
hex#53b5df
rgbrgb(83, 181, 223)
hslhsl(198, 69%, 60%)
oklchoklch(0.731 0.11 229.1)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.4021

Colors that go with #53b5df

Charcoal, Amber and Dark Orange 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 →

#df7d53

#53dfc3 · #536fdf

#df53b5 · #b5df53

Split-complementary

Open in tool →

#df536f · #dfc353

#c353df · #df7d53 · #6fdf53

Contrast

#53b5df as textRatioAAAA largeAAAFix
Aaon white
2.32:1failfailfail
  • AA: use #1f7fa8 as the text (4.51:1)
  • AAA: use #175e7d as the text (7.16:1)
  • AA: or shift the background to #3d3d3d (4.68:1)
  • AAA: or shift the background to #1f1f1f (7.1:1)
Aaon black
9.04:1passpasspassPasses 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 #53b5df 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

#53b5df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #53b5df
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 #53b5df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/53b5df-9cb3c4-df4e69-1f232d-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