Color

#13902a

#13902a
hex#13902a
rgbrgb(19, 144, 42)
hslhsl(131, 77%, 32%)
oklchoklch(0.57 0.173 144.9)
Closest name: Emerald (#028f1e)Relative luminance 0.2025

Colors that go with #13902a

Crimson, Royal Blue and Dark Orchid 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 →

#901379

#3b9013 · #139069

#2a1390 · #902a13

Split-complementary

Open in tool →

#691390 · #90133b

#133b90 · #901379 · #906913

Contrast

#13902a as textRatioAAAA largeAAAFix
Aaon white
4.16:1failpassfail
  • AA: use #128727 as the text (4.65:1)
  • AAA: use #0d631d as the text (7.45:1)
  • AA: or shift the background to #121212 (4.51:1)
Aaon black
5.05:1passpassfail
  • AAA: use #17b033 as the text (7.29:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #13902a 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 #13902a
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 #13902a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/13902a-a2beaa-b34edf-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