Color

#428554

#428554
hex#428554
rgbrgb(66, 133, 84)
hslhsl(136, 34%, 39%)
oklchoklch(0.559 0.102 150.6)
Closest name: seagreen (#2e8b57)Relative luminance 0.1857

Colors that go with #428554

Charcoal, Medium Violet Red 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 →

#854273

#518542 · #428575

#544285 · #855442

Split-complementary

Open in tool →

#754285 · #854251

#425185 · #854273 · #857542

Contrast

#428554 as textRatioAAAA largeAAAFix
Aaon white
4.45:1failpassfail
  • AA: use #408252 as the text (4.63:1)
  • AAA: use #31633e as the text (7.04:1)
  • AA: or shift the background to #050505 (4.58:1)
Aaon black
4.71:1passpassfail
  • AAA: use #52a769 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #428554 as the background.

Brands using this color

mcpConnect your agent — build around #428554
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 #428554 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/428554-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