Color

#78a121

#78a121
hex#78a121
rgbrgb(120, 161, 33)
hslhsl(79, 66%, 38%)
oklchoklch(0.656 0.156 126.5)
Closest name: BioShock (#889900)Relative luminance 0.2959

Colors that go with #78a121

Blue, Charcoal and Dark Olive Green 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 →

#4921a1

#a18921 · #38a121

#2178a1 · #a12178

Split-complementary

Open in tool →

#2138a1 · #8921a1

#21a189 · #4921a1 · #a12138

Contrast

#78a121 as textRatioAAAA largeAAAFix
Aaon white
3.04:1failpassfail
  • AA: use #5f7f1a as the text (4.63:1)
  • AAA: use #465d13 as the text (7.41:1)
  • AA: or shift the background to #2b2b2b (4.66:1)
Aaon black
6.92:1passpassfail
  • AAA: use #7ca522 as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #78a121 as the background.

Brands using this color

mcpConnect your agent — build around #78a121
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 #78a121 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/78a121-b2bea2-4e66df-232d1f-f1f0e9?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