Color

#40c7e2

#40c7e2
hex#40c7e2
rgbrgb(64, 199, 226)
hslhsl(190, 74%, 57%)
oklchoklch(0.769 0.119 214.1)
Closest name: darkturquoise (#00ced1)Relative luminance 0.4743

Colors that go with #40c7e2

Charcoal, Dark Salmon 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 →

#e25b40

#40e2ac · #4076e2

#e240c7 · #c7e240

Split-complementary

Open in tool →

#e24076 · #e2ac40

#ac40e2 · #e25b40 · #76e240

Contrast

#40c7e2 as textRatioAAAA largeAAAFix
Aaon white
2:1failfailfail
  • AA: use #178197 as the text (4.54:1)
  • AAA: use #115f6f as the text (7.27:1)
  • AA: or shift the background to #474747 (4.64:1)
  • AAA: or shift the background to #2b2b2b (7.07:1)
Aaon black
10.49:1passpasspassPasses 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 #40c7e2 as the background.

Brands using this color

Fonts for this mood

#40c7e2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40c7e2
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 #40c7e2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40c7e2-a2b6be-df4e7c-1f252d-e9f1ef?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