Color

#40cce7

#40cce7
hex#40cce7
rgbrgb(64, 204, 231)
hslhsl(190, 78%, 58%)
oklchoklch(0.783 0.121 213.5)
Closest name: darkturquoise (#00ced1)Relative luminance 0.5005

Colors that go with #40cce7

Charcoal, Crimson and Dark Orange 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 →

#e75c40

#40e7b0 · #4078e7

#e740cc · #cce740

Split-complementary

Open in tool →

#e74078 · #e7b040

#b040e7 · #e75c40 · #78e740

Contrast

#40cce7 as textRatioAAAA largeAAAFix
Aaon white
1.91:1failfailfail
  • AA: use #138096 as the text (4.61:1)
  • AAA: use #0e6171 as the text (7.08:1)
  • AA: or shift the background to #4a4a4a (4.65:1)
  • AAA: or shift the background to #2e2e2e (7.12:1)
Aaon black
11.01:1passpasspassPasses 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 #40cce7 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

#40cce7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40cce7
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 #40cce7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40cce7-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