Color

#40bfb9

#40bfb9
hex#40bfb9
rgbrgb(64, 191, 185)
hslhsl(177, 50%, 50%)
oklchoklch(0.735 0.109 190.5)
Closest name: Emerald Bliss (#4cbdac)Relative luminance 0.4185

Colors that go with #40bfb9

Charcoal, Blue and Crimson 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 →

#bf4046

#40bf79 · #4086bf

#b940bf · #bfb940

Split-complementary

Open in tool →

#bf4086 · #bf7940

#7940bf · #bf4046 · #86bf40

Contrast

#40bfb9 as textRatioAAAA largeAAAFix
Aaon white
2.24:1failfailfail
  • AA: use #2b827e as the text (4.57:1)
  • AAA: use #20605c as the text (7.27:1)
  • AA: or shift the background to #404040 (4.63:1)
  • AAA: or shift the background to #212121 (7.19:1)
Aaon black
9.37:1passpasspassPasses 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 #40bfb9 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 #40bfb9
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 #40bfb9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40bfb9-a2bcbe-d4599b-1f282d-e9f1ed?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