Color

#40c99e

#40c99e
hex#40c99e
rgbrgb(64, 201, 158)
hslhsl(161, 56%, 52%)
oklchoklch(0.752 0.133 167.9)
Closest name: Minted Elegance (#6ec9a3)Relative luminance 0.4533

Colors that go with #40c99e

Charcoal, Hot Pink and 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 →

#c9406b

#40c959 · #40b0c9

#9e40c9 · #c99e40

Split-complementary

Open in tool →

#c940b0 · #c95940

#5940c9 · #c9406b · #b0c940

Contrast

#40c99e as textRatioAAAA largeAAAFix
Aaon white
2.09:1failfailfail
  • AA: use #258365 as the text (4.65:1)
  • AAA: use #1c634d as the text (7.14:1)
  • AA: or shift the background to #454545 (4.6:1)
  • AAA: or shift the background to #262626 (7.25:1)
Aaon black
10.07:1passpasspassPasses 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 #40c99e 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 #40c99e
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 #40c99e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40c99e-a2beb8-d459bb-1f2c2d-e9f1eb?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