Color

#3fca9c

#3fca9c
hex#3fca9c
rgbrgb(63, 202, 156)
hslhsl(160, 57%, 52%)
oklchoklch(0.753 0.136 166.6)
Closest name: mediumaquamarine (#66cdaa)Relative luminance 0.457

Colors that go with #3fca9c

Charcoal, Hot Pink and Blue 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 →

#ca3f6d

#3fca56 · #3fb3ca

#9c3fca · #ca9c3f

Split-complementary

Open in tool →

#ca3fb3 · #ca563f

#563fca · #ca3f6d · #b3ca3f

Contrast

#3fca9c as textRatioAAAA largeAAAFix
Aaon white
2.07:1failfailfail
  • AA: use #248464 as the text (4.61:1)
  • AAA: use #1b644c as the text (7.06:1)
  • AA: or shift the background to #454545 (4.63:1)
  • AAA: or shift the background to #292929 (7.02:1)
Aaon black
10.14:1passpasspassPasses 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 #3fca9c 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 #3fca9c
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 #3fca9c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fca9c-a2beb8-d459be-1f2c2d-e9f1eb?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