Color

#47a9ff

#47a9ff
hex#47a9ff
rgbrgb(71, 169, 255)
hslhsl(208, 100%, 64%)
oklchoklch(0.716 0.155 248.4)
Closest name: Cerulean (#55aaee)Relative luminance 0.3694

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ff9d47

#47fff9 · #474eff

#ff47a9 · #a9ff47

Split-complementary

Open in tool →

#ff474e · #fff947

#f947ff · #ff9d47 · #4eff47

Contrast

#47a9ff as textRatioAAAA largeAAAFix
Aaon white
2.5:1failfailfail
  • AA: use #0075db as the text (4.6:1)
  • AAA: use #0057a3 as the text (7.26:1)
  • 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 #47a9ff as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#47a9ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #47a9ff
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 #47a9ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/47a9ff-9cadc4-df4e51-1f212d-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