Color

#428a4d

#428a4d
hex#428a4d
rgbrgb(66, 138, 77)
hslhsl(129, 35%, 40%)
oklchoklch(0.571 0.117 147.1)
Closest name: Beanpole (#4e8747)Relative luminance 0.1987

Colors that go with #428a4d

Charcoal, Royal Blue and Copper 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 →

#8a427f

#5b8a42 · #428a71

#4d428a · #8a4d42

Split-complementary

Open in tool →

#71428a · #8a425b

#425b8a · #8a427f · #8a7142

Contrast

#428a4d as textRatioAAAA largeAAAFix
Aaon white
4.22:1failpassfail
  • AA: use #3f8349 as the text (4.61:1)
  • AAA: use #2e6036 as the text (7.39:1)
  • AA: or shift the background to #0f0f0f (4.54:1)
Aaon black
4.97:1passpassfail
  • AAA: use #51a95e as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #428a4d 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 #428a4d
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 #428a4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/428a4d-a2bea9-ae4edf-1f2d27-ecf1e9?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