Color

#52a5ff

#52a5ff
hex#52a5ff
rgbrgb(82, 165, 255)
hslhsl(211, 100%, 66%)
oklchoklch(0.711 0.155 252.5)
Closest name: Cerulean (#55aaee)Relative luminance 0.3592

Colors that go with #52a5ff

Charcoal, Amber and Blue 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 →

#ffab52

#52fcff · #5452ff

#ff52a5 · #a5ff52

Split-complementary

Open in tool →

#ff5452 · #fcff52

#ff52fc · #ffab52 · #52ff54

Contrast

#52a5ff as textRatioAAAA largeAAAFix
Aaon white
2.57:1failfailfail
  • AA: use #0071eb as the text (4.6:1)
  • AAA: use #0056b3 as the text (7.04:1)
  • AA: or shift the background to #383838 (4.57:1)
  • AAA: or shift the background to #141414 (7.18:1)
Aaon black
8.18:1passpasspassPasses 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 #52a5ff as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#52a5ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #52a5ff
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 #52a5ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/52a5ff-9cabc4-df534e-1f202d-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