Color

#13aa31

#13aa31
hex#13aa31
rgbrgb(19, 170, 49)
hslhsl(132, 80%, 37%)
oklchoklch(0.643 0.198 144.9)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2911

Colors that go with #13aa31

Blue, Dodger Blue 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 →

#aa138c

#40aa13 · #13aa7d

#3113aa · #aa3113

Split-complementary

Open in tool →

#7d13aa · #aa1340

#1340aa · #aa138c · #aa7d13

Contrast

#13aa31 as textRatioAAAA largeAAAFix
Aaon white
3.08:1failpassfail
  • AA: use #0f8526 as the text (4.77:1)
  • AAA: use #0b651d as the text (7.26:1)
  • AA: or shift the background to #2b2b2b (4.6:1)
Aaon black
6.82:1passpassfail
  • AAA: use #13ae32 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #13aa31 as the background.

Brands using this color

mcpConnect your agent — build around #13aa31
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 #13aa31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/13aa31-a2beab-b64edf-1f2d28-ecf1e9?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