Color

#40db3d

#40db3d
hex#40db3d
rgbrgb(64, 219, 61)
hslhsl(119, 69%, 55%)
oklchoklch(0.782 0.234 142.7)
Closest name: Green Priestess (#11dd55)Relative luminance 0.5209

Colors that go with #40db3d

Taupe, Violet and Hot Pink 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 →

#d93ddb

#8fdb3d · #3ddb8a

#3d40db · #db3d40

Split-complementary

Open in tool →

#8a3ddb · #db3d8f

#3d8fdb · #d93ddb · #db8a3d

Contrast

#40db3d as textRatioAAAA largeAAAFix
Aaon white
1.84:1failfailfail
  • AA: use #1a8619 as the text (4.7:1)
  • AAA: use #146713 as the text (7.05:1)
  • AA: or shift the background to #4d4d4d (4.6:1)
  • AAA: or shift the background to #303030 (7.18:1)
Aaon black
11.42:1passpasspassPasses 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 #40db3d 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 #40db3d
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 #40db3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40db3d-a2bea5-964edf-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