Color

#3fddfd

#3fddfd
hex#3fddfd
rgbrgb(63, 221, 253)
hslhsl(190, 98%, 62%)
oklchoklch(0.831 0.133 214.8)
Closest name: Aqua (#0ff0fe)Relative luminance 0.5986

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fd5f3f

#3ffdbe · #3f7efd

#fd3fdd · #ddfd3f

Split-complementary

Open in tool →

#fd3f7e · #fdbe3f

#be3ffd · #fd5f3f · #7efd3f

Contrast

#3fddfd as textRatioAAAA largeAAAFix
Aaon white
1.62:1failfailfail
  • AA: use #027e97 as the text (4.74:1)
  • AAA: use #016174 as the text (7.09:1)
  • AA: or shift the background to #545454 (4.68:1)
  • AAA: or shift the background to #383838 (7.24:1)
Aaon black
12.97:1passpasspassPasses 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 #3fddfd as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

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

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

tool url/palettes/new/3fddfd-a2b6be-df4e7c-1f252d-e9f1ef?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