Color

#428a1e

#428a1e
hex#428a1e
rgbrgb(66, 138, 30)
hslhsl(100, 64%, 33%)
oklchoklch(0.565 0.157 137.6)
Closest name: Overgrown Mausoleum (#448833)Relative luminance 0.1943

Colors that go with #428a1e

Charcoal, Royal 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 →

#661e8a

#788a1e · #1e8a30

#1e428a · #8a1e42

Split-complementary

Open in tool →

#301e8a · #8a1e78

#1e788a · #661e8a · #8a301e

Contrast

#428a1e as textRatioAAAA largeAAAFix
Aaon white
4.3:1failpassfail
  • AA: use #40861d as the text (4.52:1)
  • AAA: use #306416 as the text (7.09:1)
  • AA: or shift the background to #0d0d0d (4.52:1)
Aaon black
4.89:1passpassfail
  • AAA: use #52ab26 as the text (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #428a1e as the background.

Brands using this color

mcpConnect your agent — build around #428a1e
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 #428a1e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/428a1e-a8bea2-694edf-1f2d21-f0f1e9?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