Color

#40c4be

#40c4be
hex#40c4be
rgbrgb(64, 196, 190)
hslhsl(177, 53%, 51%)
oklchoklch(0.749 0.112 190.6)
Closest name: Cockatoo (#58c8b6)Relative luminance 0.4429

Colors that go with #40c4be

Charcoal, Dodger Blue 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 →

#c44046

#40c47b · #4089c4

#be40c4 · #c4be40

Split-complementary

Open in tool →

#c44089 · #c47b40

#7b40c4 · #c44046 · #89c440

Contrast

#40c4be as textRatioAAAA largeAAAFix
Aaon white
2.13:1failfailfail
  • AA: use #28817c as the text (4.64:1)
  • AAA: use #1e625e as the text (7.09:1)
  • AA: or shift the background to #454545 (4.5:1)
  • AAA: or shift the background to #262626 (7.1:1)
Aaon black
9.86:1passpasspassPasses 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 #40c4be 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 #40c4be
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 #40c4be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40c4be-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