Color

#4cb91d

#4cb91d
hex#4cb91d
rgbrgb(76, 185, 29)
hslhsl(102, 73%, 42%)
oklchoklch(0.695 0.208 138.8)
Closest name: Frog (#58bc08)Relative luminance 0.3632

Colors that go with #4cb91d

Royal Blue, Taupe and 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 →

#8a1db9

#9ab91d · #1db93c

#1d4cb9 · #b91d4c

Split-complementary

Open in tool →

#3c1db9 · #b91d9a

#1d9ab9 · #8a1db9 · #b93c1d

Contrast

#4cb91d as textRatioAAAA largeAAAFix
Aaon white
2.54:1failfailfail
  • AA: use #368415 as the text (4.7:1)
  • AAA: use #2a6510 as the text (7.08:1)
  • AA: or shift the background to #383838 (4.61:1)
  • AAA: or shift the background to #171717 (7.06:1)
Aaon black
8.26:1passpasspassPasses 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 #4cb91d 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 #4cb91d
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 #4cb91d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4cb91d-a7bea2-6e4edf-1f2d21-eff1e9?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