Color

#40b074

#40b074
hex#40b074
rgbrgb(64, 176, 116)
hslhsl(148, 47%, 47%)
oklchoklch(0.678 0.135 156.3)
Closest name: mediumseagreen (#3cb371)Relative luminance 0.334

Colors that go with #40b074

Charcoal, Blue and Cornflower 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 →

#b0407c

#43b040 · #40b0ac

#7440b0 · #b07440

Split-complementary

Open in tool →

#ac40b0 · #b04043

#4043b0 · #b0407c · #b0ac40

Contrast

#40b074 as textRatioAAAA largeAAAFix
Aaon white
2.73:1failfailfail
  • AA: use #2f8356 as the text (4.66:1)
  • AAA: use #236140 as the text (7.35:1)
  • AA: or shift the background to #333333 (4.62:1)
  • AAA: or shift the background to #0f0f0f (7.01:1)
Aaon black
7.68:1passpasspassPasses 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 #40b074 as the background.

Brands using this color

mcpConnect your agent — build around #40b074
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 #40b074 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40b074-a2beb2-d259d4-1f2d2c-eaf1e9?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