Color

#4ea666

#4ea666
hex#4ea666
rgbrgb(78, 166, 102)
hslhsl(136, 36%, 48%)
oklchoklch(0.654 0.128 150.4)
Closest name: Cosmic Green (#30a877)Relative luminance 0.2985

Colors that go with #4ea666

Charcoal, Blue and Crimson 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 →

#a64e8f

#63a64e · #4ea692

#664ea6 · #a6664e

Split-complementary

Open in tool →

#924ea6 · #a64e63

#4e63a6 · #a64e8f · #a6924e

Contrast

#4ea666 as textRatioAAAA largeAAAFix
Aaon white
3.01:1failpassfail
  • AA: use #3e8451 as the text (4.54:1)
  • AAA: use #2e613b as the text (7.27:1)
  • AA: or shift the background to #2e2e2e (4.51:1)
Aaon black
6.97:1passpassfail
  • AAA: use #50aa68 as the text (7.29:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4ea666 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 #4ea666
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 #4ea666 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4ea666-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