Color

#3fd5c8

#3fd5c8
hex#3fd5c8
rgbrgb(63, 213, 200)
hslhsl(175, 64%, 54%)
oklchoklch(0.793 0.124 186.5)
Closest name: mediumturquoise (#48d1cc)Relative luminance 0.5282

Colors that go with #3fd5c8

Charcoal, Blue and Crimson lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d53f4b

#3fd57d · #3f96d5

#c83fd5 · #d5c83f

Split-complementary

Open in tool →

#d53f96 · #d57d3f

#7d3fd5 · #d53f4b · #96d53f

Contrast

#3fd5c8 as textRatioAAAA largeAAAFix
Aaon white
1.82:1failfailfail
  • AA: use #1c8279 as the text (4.65:1)
  • AAA: use #15605a as the text (7.36:1)
  • AA: or shift the background to #4f4f4f (4.51:1)
  • AAA: or shift the background to #303030 (7.27:1)
Aaon black
11.56:1passpasspassPasses 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 #3fd5c8 as the background.

Brands using this color

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

mcpConnect your agent — build around #3fd5c8
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3fd5c8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fd5c8-a2bdbe-d4599f-1f282d-e9f1ed?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