Color

#40a09a

#40a09a
hex#40a09a
rgbrgb(64, 160, 154)
hslhsl(176, 43%, 44%)
oklchoklch(0.648 0.09 189.5)
Closest name: Baltic (#279d9f)Relative luminance 0.2856

Colors that go with #40a09a

Charcoal, Copper 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.

Real palettes that use #40a09a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a04046

#40a06a · #4077a0

#9a40a0 · #a09a40

Split-complementary

Open in tool →

#a04077 · #a06a40

#6a40a0 · #a04046 · #77a040

Contrast

#40a09a as textRatioAAAA largeAAAFix
Aaon white
3.13:1failpassfail
  • AA: use #33807b as the text (4.65:1)
  • AAA: use #27625f as the text (7:1)
  • AA: or shift the background to #2b2b2b (4.53:1)
Aaon black
6.71:1passpassfail
  • AAA: use #41a49e as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40a09a 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 #40a09a
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 #40a09a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40a09a-a2bdbe-d4599d-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