Color

#40bfa4

#40bfa4
hex#40bfa4
rgbrgb(64, 191, 164)
hslhsl(167, 50%, 50%)
oklchoklch(0.728 0.117 175.8)
Closest name: Emerald Bliss (#4cbdac)Relative luminance 0.4103

Colors that go with #40bfa4

Charcoal, Hot Pink and Midnight 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 →

#bf405b

#40bf64 · #409bbf

#a440bf · #bfa440

Split-complementary

Open in tool →

#bf409b · #bf6440

#6440bf · #bf405b · #9bbf40

Contrast

#40bfa4 as textRatioAAAA largeAAAFix
Aaon white
2.28:1failfailfail
  • AA: use #2b826f as the text (4.64:1)
  • AAA: use #216355 as the text (7.05:1)
  • AA: or shift the background to #404040 (4.55:1)
  • AAA: or shift the background to #212121 (7.06:1)
Aaon black
9.21:1passpasspassPasses 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 #40bfa4 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 #40bfa4
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 #40bfa4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40bfa4-a2bebb-d459af-1f2a2d-e9f1ec?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