Color

#40a20b

#40a20b
hex#40a20b
rgbrgb(64, 162, 11)
hslhsl(99, 87%, 34%)
oklchoklch(0.629 0.193 138.5)
Closest name: Grass Is Greener (#3f9b0b)Relative luminance 0.2695

Colors that go with #40a20b

Blue, Dodger Blue and Royal Blue 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 →

#6d0ba2

#8ca20b · #0ba222

#0b40a2 · #a20b40

Split-complementary

Open in tool →

#220ba2 · #a20b8c

#0b8ca2 · #6d0ba2 · #a2220b

Contrast

#40a20b as textRatioAAAA largeAAAFix
Aaon white
3.29:1failpassfail
  • AA: use #358609 as the text (4.6:1)
  • AAA: use #286407 as the text (7.2:1)
  • AA: or shift the background to #262626 (4.61:1)
Aaon black
6.39:1passpassfail
  • AAA: use #44ac0c 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 #40a20b 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 #40a20b
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 #40a20b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40a20b-a8bea2-664edf-1f2d21-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