Color

#428a67

#428a67
hex#428a67
rgbrgb(66, 138, 103)
hslhsl(151, 35%, 40%)
oklchoklch(0.577 0.091 160.4)
Closest name: Illuminati Green (#419168)Relative luminance 0.2031

Colors that go with #428a67

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 →

#8a4265

#428a43 · #42898a

#67428a · #8a6742

Split-complementary

Open in tool →

#8a4289 · #8a4342

#43428a · #8a4265 · #898a42

Contrast

#428a67 as textRatioAAAA largeAAAFix
Aaon white
4.15:1failpassfail
  • AA: use #3f8362 as the text (4.53:1)
  • AAA: use #2e6048 as the text (7.28:1)
  • AA: or shift the background to #121212 (4.52:1)
Aaon black
5.06:1passpassfail
  • AAA: use #50a57c as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #428a67 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 #428a67
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 #428a67 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/428a67-a2beb4-d459d0-1f2d2c-e9f1ea?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