brandsweets

Color

#3fc663

#3fc663
hex#3fc663
rgbrgb(63, 198, 99)
hslhsl(136, 54%, 51%)
oklchoklch(0.732 0.181 148.5)
Closest name: Battletoad (#11cc55)Relative luminance 0.4235
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
3fc663c63fa2

#c63fa2

Analogous

Open in tool →
3fc6635ec63f3fc6a6

#5ec63f · #3fc6a6

Triadic

Open in tool →
3fc663633fc6c6633f

#633fc6 · #c6633f

Split-complementary

Open in tool →
3fc663a63fc6c63f5e

#a63fc6 · #c63f5e

Tetradic

Open in tool →
3fc6633f5ec6c63fa2c6a63f

#3f5ec6 · #c63fa2 · #c6a63f

Contrast

#3fc663 as textRatioAAAA largeAAAFix
Aaon white
2.22:1failfailfail
  • AA: use #288641 as the text (4.59:1)
  • AAA: use #1d6230 as the text (7.39:1)
  • AA: or shift the background to #424242 (4.53:1)
  • AAA: or shift the background to #212121 (7.26:1)
Aaon black
9.47:1passpasspassPasses 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 #3fc663 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #3fc663
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 #3fc663 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fc663-a2bead-b959d4-1f2d29-ebf1e9?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