Color

#03adfc

#03adfc
hex#03adfc
rgbrgb(3, 173, 252)
hslhsl(199, 98%, 50%)
oklchoklch(0.713 0.162 239.8)
Closest name: Cerulean (#55aaee)Relative luminance 0.3693

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fc5203

#03fccf · #0330fc

#fc03ad · #adfc03

Split-complementary

Open in tool →

#fc0330 · #fccf03

#cf03fc · #fc5203 · #30fc03

Contrast

#03adfc as textRatioAAAA largeAAAFix
Aaon white
2.5:1failfailfail
  • AA: use #027db6 as the text (4.55:1)
  • AAA: use #015e88 as the text (7.1:1)
  • AA: or shift the background to #383838 (4.68:1)
  • AAA: or shift the background to #171717 (7.16:1)
Aaon black
8.39:1passpasspassPasses 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 #03adfc as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#03adfc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03adfc
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #03adfc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03adfc-9cb3c4-df4e66-1f232d-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