Color

#51e6dc

#51e6dc
hex#51e6dc
rgbrgb(81, 230, 220)
hslhsl(176, 75%, 61%)
oklchoklch(0.844 0.125 188.7)
Closest name: turquoise (#40e0d0)Relative luminance 0.6351

Colors that go with #51e6dc

Charcoal, Deep Sky Blue and Light Coral 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 →

#e6515b

#51e692 · #51a5e6

#dc51e6 · #e6dc51

Split-complementary

Open in tool →

#e651a5 · #e69251

#9251e6 · #e6515b · #a5e651

Contrast

#51e6dc as textRatioAAAA largeAAAFix
Aaon white
1.53:1failfailfail
  • AA: use #12817a as the text (4.72:1)
  • AAA: use #0e625d as the text (7.18:1)
  • AA: or shift the background to #595959 (4.57:1)
  • AAA: or shift the background to #3d3d3d (7.09:1)
Aaon black
13.7:1passpasspassPasses 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 #51e6dc 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 #51e6dc
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 #51e6dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51e6dc-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