Color

#28865a

#28865a
hex#28865a
rgbrgb(40, 134, 90)
hslhsl(152, 54%, 34%)
oklchoklch(0.554 0.111 158.7)
Closest name: seagreen (#2e8b57)Relative luminance 0.1824

Colors that go with #28865a

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 →

#862854

#28862b · #288286

#5a2886 · #865a28

Split-complementary

Open in tool →

#862882 · #862b28

#2b2886 · #862854 · #828628

Contrast

#28865a as textRatioAAAA largeAAAFix
Aaon white
4.52:1passpassfail
  • AAA: use #1d6242 as the text (7.3:1)
Aaon black
4.65:1passpassfail
  • AAA: use #32a972 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28865a as the background.

Brands using this color

mcpConnect your agent — build around #28865a
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 #28865a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28865a-a2beb4-d459ce-1f2d2d-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