Color

#528dcb

#528dcb
hex#528dcb
rgbrgb(82, 141, 203)
hslhsl(211, 54%, 56%)
oklchoklch(0.63 0.113 251.1)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2516

Colors that go with #528dcb

Charcoal, Copper 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 →

#cb9152

#52c9cb · #5452cb

#cb528d · #8dcb52

Split-complementary

Open in tool →

#cb5452 · #c9cb52

#cb52c9 · #cb9152 · #52cb54

Contrast

#528dcb as textRatioAAAA largeAAAFix
Aaon white
3.48:1failpassfail
  • AA: use #3878bc as the text (4.58:1)
  • AAA: use #2a5a8d as the text (7.13:1)
  • AA: or shift the background to #212121 (4.62:1)
Aaon black
6.03:1passpassfail
  • AAA: use #669ad1 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #528dcb as the background.

Brands using this color

Fonts for this mood

#528dcb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #528dcb
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 #528dcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/528dcb-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