Color

#31c970

#31c970
hex#31c970
rgbrgb(49, 201, 112)
hslhsl(145, 61%, 49%)
oklchoklch(0.738 0.178 152.3)
Closest name: Emerald Green (#50c878)Relative luminance 0.436

Colors that go with #31c970

Charcoal, Mustard Yellow 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 →

#c9318a

#3dc931 · #31c9bc

#7031c9 · #c97031

Split-complementary

Open in tool →

#bc31c9 · #c9313d

#313dc9 · #c9318a · #c9bc31

Contrast

#31c970 as textRatioAAAA largeAAAFix
Aaon white
2.16:1failfailfail
  • AA: use #21874c as the text (4.53:1)
  • AAA: use #186337 as the text (7.29:1)
  • AA: or shift the background to #424242 (4.65:1)
  • AAA: or shift the background to #262626 (7:1)
Aaon black
9.72:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #31c970 as the background.

Brands using this color

mcpConnect your agent — build around #31c970
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 #31c970 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31c970-a2beb1-cc59d4-1f2d2b-eaf1e9?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