Color

#40abb0

#40abb0
hex#40abb0
rgbrgb(64, 171, 176)
hslhsl(183, 47%, 47%)
oklchoklch(0.683 0.096 199.5)
Closest name: lightseagreen (#20b2aa)Relative luminance 0.3335

Colors that go with #40abb0

Charcoal, Terracotta and Copper 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 →

#b04540

#40b07d · #4072b0

#b040ab · #abb040

Split-complementary

Open in tool →

#b04072 · #b07d40

#7d40b0 · #b04540 · #72b040

Contrast

#40abb0 as textRatioAAAA largeAAAFix
Aaon white
2.74:1failfailfail
  • AA: use #2f7f83 as the text (4.68:1)
  • AAA: use #235e61 as the text (7.38:1)
  • AA: or shift the background to #333333 (4.61:1)
  • AAA: or shift the background to #0f0f0f (7:1)
Aaon black
7.67:1passpasspassPasses 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 #40abb0 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

#40abb0 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40abb0
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 #40abb0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40abb0-a2b9be-d4598e-1f262d-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