Color

#3fedfd

#3fedfd
hex#3fedfd
rgbrgb(63, 237, 253)
hslhsl(185, 98%, 62%)
oklchoklch(0.868 0.136 204.4)
Closest name: Aqua (#0ff0fe)Relative luminance 0.6872

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fd4f3f

#3ffdae · #3f8efd

#fd3fed · #edfd3f

Split-complementary

Open in tool →

#fd3f8e · #fdae3f

#ae3ffd · #fd4f3f · #8efd3f

Contrast

#3fedfd as textRatioAAAA largeAAAFix
Aaon white
1.42:1failfailfail
  • AA: use #01828d as the text (4.59:1)
  • AAA: use #01616a as the text (7.19:1)
  • AA: or shift the background to #5e5e5e (4.55:1)
  • AAA: or shift the background to #424242 (7.06:1)
Aaon black
14.74:1passpasspassPasses 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 #3fedfd 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

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

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

tool url/palettes/new/3fedfd-a2b8be-df4e88-1f262d-e9f1ee?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