Color

#35ade9

#35ade9
hex#35ade9
rgbrgb(53, 173, 233)
hslhsl(200, 80%, 56%)
oklchoklch(0.709 0.135 235.6)
Closest name: Cerulean (#55aaee)Relative luminance 0.3653

Colors that go with #35ade9

Charcoal, Peru 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 →

#e97135

#35e9cb · #3553e9

#e935ad · #ade935

Split-complementary

Open in tool →

#e93553 · #e9cb35

#cb35e9 · #e97135 · #53e935

Contrast

#35ade9 as textRatioAAAA largeAAAFix
Aaon white
2.53:1failfailfail
  • AA: use #147eb3 as the text (4.5:1)
  • AAA: use #0f5e85 as the text (7.09:1)
  • AA: or shift the background to #383838 (4.64:1)
  • AAA: or shift the background to #171717 (7.09:1)
Aaon black
8.31:1passpasspassPasses 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 #35ade9 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#35ade9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #35ade9
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 #35ade9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/35ade9-9cb2c4-df4e64-1f232d-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