Color

#1d901d

#1d901d
hex#1d901d
rgbrgb(29, 144, 29)
hslhsl(120, 66%, 34%)
oklchoklch(0.571 0.179 142.8)
Closest name: Emerald (#028f1e)Relative luminance 0.203

Colors that go with #1d901d

Crimson, Royal Blue and Charcoal 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 →

#901d90

#57901d · #1d9057

#1d1d90 · #901d1d

Split-complementary

Open in tool →

#571d90 · #901d57

#1d5790 · #901d90 · #90571d

Contrast

#1d901d as textRatioAAAA largeAAAFix
Aaon white
4.15:1failpassfail
  • AA: use #1c871c as the text (4.63:1)
  • AAA: use #156615 as the text (7.13:1)
  • AA: or shift the background to #121212 (4.51:1)
Aaon black
5.06:1passpassfail
  • AAA: use #24ae24 as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d901d 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 #1d901d
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 #1d901d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d901d-a2bea5-994edf-1f2d25-edf1e9?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