Color

#3fe5ee

#3fe5ee
hex#3fe5ee
rgbrgb(63, 229, 238)
hslhsl(183, 84%, 59%)
oklchoklch(0.844 0.131 200.5)
Closest name: Aqua (#0ff0fe)Relative luminance 0.6327

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ee473f

#3fee9f · #3f8eee

#ee3fe5 · #e5ee3f

Split-complementary

Open in tool →

#ee3f8e · #ee9f3f

#9f3fee · #ee473f · #8eee3f

Contrast

#3fe5ee as textRatioAAAA largeAAAFix
Aaon white
1.54:1failfailfail
  • AA: use #0c8288 as the text (4.6:1)
  • AAA: use #096367 as the text (7.02:1)
  • AA: or shift the background to #595959 (4.55:1)
  • AAA: or shift the background to #3d3d3d (7.06:1)
Aaon black
13.65:1passpasspassPasses 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 #3fe5ee 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

#3fe5ee reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3fe5ee
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 #3fe5ee and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fe5ee-a2b9be-d4598e-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