Color

#3fcbd5

#3fcbd5
hex#3fcbd5
rgbrgb(63, 203, 213)
hslhsl(184, 64%, 54%)
oklchoklch(0.773 0.117 202.1)
Closest name: darkturquoise (#00ced1)Relative luminance 0.4857

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d5493f

#3fd594 · #3f80d5

#d53fcb · #cbd53f

Split-complementary

Open in tool →

#d53f80 · #d5943f

#943fd5 · #d5493f · #80d53f

Contrast

#3fcbd5 as textRatioAAAA largeAAAFix
Aaon white
1.96:1failfailfail
  • AA: use #1d7f86 as the text (4.74:1)
  • AAA: use #165f64 as the text (7.36:1)
  • AA: or shift the background to #4a4a4a (4.52:1)
  • AAA: or shift the background to #2b2b2b (7.22:1)
Aaon black
10.71:1passpasspassPasses 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 #3fcbd5 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

#3fcbd5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3fcbd5
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 #3fcbd5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fcbd5-a2b9be-df4e8a-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