Color

#28eb63

#28eb63
hex#28eb63
rgbrgb(40, 235, 99)
hslhsl(138, 83%, 54%)
oklchoklch(0.823 0.231 147.5)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.6077

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eb28b1

#4feb28 · #28ebc4

#6328eb · #eb6328

Split-complementary

Open in tool →

#c428eb · #eb284f

#284feb · #eb28b1 · #ebc428

Contrast

#28eb63 as textRatioAAAA largeAAAFix
Aaon white
1.6:1failfailfail
  • AA: use #0d8731 as the text (4.64:1)
  • AAA: use #0a6725 as the text (7.05:1)
  • AA: or shift the background to #575757 (4.53:1)
  • AAA: or shift the background to #3b3b3b (7.02:1)
Aaon black
13.15:1passpasspassPasses 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 #28eb63 as the background.

Brands using this color

mcpConnect your agent — build around #28eb63
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 #28eb63 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28eb63-a2beae-be59d4-1f2d29-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