brandsweets

Color

#3fe489

#3fe489
hex#3fe489
rgbrgb(63, 228, 137)
hslhsl(147, 75%, 57%)
oklchoklch(0.815 0.185 154)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5835
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
3fe489e43f9a

#e43f9a

Analogous

Open in tool →
3fe48947e43f3fe4db

#47e43f · #3fe4db

Triadic

Open in tool →
3fe489893fe4e4893f

#893fe4 · #e4893f

Split-complementary

Open in tool →
3fe489db3fe4e43f47

#db3fe4 · #e43f47

Tetradic

Open in tool →
3fe4893f47e4e43f9ae4db3f

#3f47e4 · #e43f9a · #e4db3f

Contrast

#3fe489 as textRatioAAAA largeAAAFix
Aaon white
1.66:1failfailfail
  • AA: use #138647 as the text (4.64:1)
  • AAA: use #0e6234 as the text (7.46:1)
  • AA: or shift the background to #545454 (4.57:1)
  • AAA: or shift the background to #383838 (7.07:1)
Aaon black
12.67:1passpasspassPasses 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 #3fe489 as the background.

Brands using this color

mcpConnect your agent — build around #3fe489
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 #3fe489 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fe489-a2beb2-d059d4-1f2d2c-eaf1e9?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