Color

#3fade4

#3fade4
hex#3fade4
rgbrgb(63, 173, 228)
hslhsl(200, 75%, 57%)
oklchoklch(0.709 0.126 234.6)
Closest name: Cousteau (#55a9d6)Relative luminance 0.3655

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e4763f

#3fe4c8 · #3f5be4

#e43fad · #ade43f

Split-complementary

Open in tool →

#e43f5b · #e4c83f

#c83fe4 · #e4763f · #5be43f

Contrast

#3fade4 as textRatioAAAA largeAAAFix
Aaon white
2.53:1failfailfail
  • AA: use #197cae as the text (4.63:1)
  • AAA: use #125c81 as the text (7.31:1)
  • 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 #3fade4 as the background.

Brands using this color

Fonts for this mood

#3fade4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3fade4
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 #3fade4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fade4-9cb2c4-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