Color

#428b37

#428b37
hex#428b37
rgbrgb(66, 139, 55)
hslhsl(112, 43%, 38%)
oklchoklch(0.57 0.14 141.1)
Closest name: Overgrown Mausoleum (#448833)Relative luminance 0.199

Colors that go with #428b37

Charcoal, Crimson and Royal Blue 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 →

#7f378b

#6c8b37 · #378b56

#37428b · #8b3742

Split-complementary

Open in tool →

#56378b · #8b376c

#376c8b · #7f378b · #8b5637

Contrast

#428b37 as textRatioAAAA largeAAAFix
Aaon white
4.22:1failpassfail
  • AA: use #3f8334 as the text (4.66:1)
  • AAA: use #2f6227 as the text (7.25:1)
  • AA: or shift the background to #0f0f0f (4.55:1)
Aaon black
4.98:1passpassfail
  • AAA: use #50a843 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #428b37 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 #428b37
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 #428b37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/428b37-a2bea2-864edf-1f2d23-eef1e9?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