Color

#52a3ef

#52a3ef
hex#52a3ef
rgbrgb(82, 163, 239)
hslhsl(209, 83%, 63%)
oklchoklch(0.698 0.137 249.1)
Closest name: Cerulean (#55aaee)Relative luminance 0.3422

Colors that go with #52a3ef

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ef9e52

#52efec · #5255ef

#ef52a3 · #a3ef52

Split-complementary

Open in tool →

#ef5255 · #efec52

#ec52ef · #ef9e52 · #55ef52

Contrast

#52a3ef as textRatioAAAA largeAAAFix
Aaon white
2.68:1failfailfail
  • AA: use #1476d2 as the text (4.61:1)
  • AAA: use #0f599f as the text (7.12:1)
  • AA: or shift the background to #363636 (4.51:1)
  • AAA: or shift the background to #0f0f0f (7.16:1)
Aaon black
7.84:1passpasspassPasses 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 #52a3ef 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

#52a3ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #52a3ef
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 #52a3ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/52a3ef-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