Color

#28af7b

#28af7b
hex#28af7b
rgbrgb(40, 175, 123)
hslhsl(157, 63%, 42%)
oklchoklch(0.671 0.137 161.8)
Closest name: Cosmic Green (#30a877)Relative luminance 0.3254

Tints & shades

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

Harmonies

Complementary

Open in tool →

#af285b

#28af37 · #289faf

#7b28af · #af7b28

Split-complementary

Open in tool →

#af289f · #af3728

#3728af · #af285b · #9faf28

Contrast

#28af7b as textRatioAAAA largeAAAFix
Aaon white
2.8:1failfailfail
  • AA: use #1e855e as the text (4.59:1)
  • AAA: use #176446 as the text (7.12:1)
  • AA: or shift the background to #333333 (4.52:1)
  • AAA: or shift the background to #0a0a0a (7.08:1)
Aaon black
7.51:1passpasspassPasses 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 #28af7b 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 #28af7b
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 #28af7b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28af7b-a2beb7-d459c4-1f2c2d-e9f1ea?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