Color

#40acbf

#40acbf
hex#40acbf
rgbrgb(64, 172, 191)
hslhsl(189, 50%, 50%)
oklchoklch(0.691 0.1 211.4)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3436

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#bf5340

#40bf93 · #406cbf

#bf40ac · #acbf40

Split-complementary

Open in tool →

#bf406c · #bf9340

#9340bf · #bf5340 · #6cbf40

Contrast

#40acbf as textRatioAAAA largeAAAFix
Aaon white
2.67:1failfailfail
  • AA: use #2f7f8e as the text (4.62:1)
  • AAA: use #24606b as the text (7.09:1)
  • AA: or shift the background to #363636 (4.53:1)
  • AAA: or shift the background to #121212 (7.02:1)
Aaon black
7.87:1passpasspassPasses 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 #40acbf as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#40acbf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40acbf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #40acbf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40acbf-a2b7be-df4e7e-1f252d-e9f1ee?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