Color

#40a90f

#40a90f
hex#40a90f
rgbrgb(64, 169, 15)
hslhsl(101, 84%, 36%)
oklchoklch(0.648 0.199 139)
Closest name: Botanical Garden (#44aa11)Relative luminance 0.295

Colors that go with #40a90f

Blue, Dodger Blue and Taupe 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 →

#780fa9

#8da90f · #0fa92b

#0f40a9 · #a90f40

Split-complementary

Open in tool →

#2b0fa9 · #a90f8d

#0f8da9 · #780fa9 · #a92b0f

Contrast

#40a90f as textRatioAAAA largeAAAFix
Aaon white
3.04:1failpassfail
  • AA: use #31830b as the text (4.79:1)
  • AAA: use #256309 as the text (7.32:1)
  • AA: or shift the background to #2b2b2b (4.65:1)
Aaon black
6.9:1passpassfail
  • AAA: use #41ae0f 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 #40a90f as the background.

Brands using this color

mcpConnect your agent — build around #40a90f
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 #40a90f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40a90f-a7bea2-6b4edf-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