Color

#4b901d

#4b901d
hex#4b901d
rgbrgb(75, 144, 29)
hslhsl(96, 66%, 34%)
oklchoklch(0.586 0.16 136.1)
Closest name: Overgrown Mausoleum (#448833)Relative luminance 0.2153

Colors that go with #4b901d

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 →

#621d90

#84901d · #1d9029

#1d4b90 · #901d4b

Split-complementary

Open in tool →

#291d90 · #901d84

#1d8490 · #621d90 · #90291d

Contrast

#4b901d as textRatioAAAA largeAAAFix
Aaon white
3.96:1failpassfail
  • AA: use #45831b as the text (4.65:1)
  • AAA: use #336114 as the text (7.34:1)
  • AA: or shift the background to #171717 (4.53:1)
Aaon black
5.31:1passpassfail
  • AAA: use #59a923 as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4b901d 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 #4b901d
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 #4b901d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4b901d-aabea2-5f4edf-1f2d20-f0f1e9?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