Color

#428f50

#428f50
hex#428f50
rgbrgb(66, 143, 80)
hslhsl(131, 37%, 41%)
oklchoklch(0.585 0.122 147.7)
Closest name: Fern (#548d44)Relative luminance 0.2138

Colors that go with #428f50

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 →

#8f4281

#5a8f42 · #428f77

#50428f · #8f5042

Split-complementary

Open in tool →

#77428f · #8f425a

#425a8f · #8f4281 · #8f7742

Contrast

#428f50 as textRatioAAAA largeAAAFix
Aaon white
3.98:1failpassfail
  • AA: use #3d854a as the text (4.51:1)
  • AAA: use #2d6237 as the text (7.21:1)
  • AA: or shift the background to #171717 (4.5:1)
Aaon black
5.28:1passpassfail
  • AAA: use #4da85e as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #428f50 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 #428f50
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 #428f50 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/428f50-a2beaa-b34edf-1f2d28-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