Color

#4ac990

#4ac990
hex#4ac990
rgbrgb(74, 201, 144)
hslhsl(153, 54%, 54%)
oklchoklch(0.751 0.14 160.5)
Closest name: Emerald Green (#50c878)Relative luminance 0.4524

Colors that go with #4ac990

Charcoal, Blue and Dark Olive Green 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 →

#c94a83

#4ac951 · #4ac3c9

#904ac9 · #c9904a

Split-complementary

Open in tool →

#c94ac3 · #c9514a

#514ac9 · #c94a83 · #c3c94a

Contrast

#4ac990 as textRatioAAAA largeAAAFix
Aaon white
2.09:1failfailfail
  • AA: use #28865b as the text (4.51:1)
  • AAA: use #1d6243 as the text (7.29:1)
  • AA: or shift the background to #454545 (4.59:1)
  • AAA: or shift the background to #262626 (7.24:1)
Aaon black
10.05:1passpasspassPasses 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 #4ac990 as the background.

Brands using this color

mcpConnect your agent — build around #4ac990
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 #4ac990 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4ac990-a2beb5-d459cc-1f2d2d-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