Color

#51dbdb

#51dbdb
hex#51dbdb
rgbrgb(81, 219, 219)
hslhsl(180, 66%, 59%)
oklchoklch(0.818 0.117 195.1)
Closest name: Hammam Blue (#65dcd6)Relative luminance 0.5753

Tints & shades

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

Harmonies

Complementary

Open in tool →

#db5151

#51db96 · #5196db

#db51db · #dbdb51

Split-complementary

Open in tool →

#db5196 · #db9651

#9651db · #db5151 · #96db51

Contrast

#51dbdb as textRatioAAAA largeAAAFix
Aaon white
1.68:1failfailfail
  • AA: use #1b8383 as the text (4.54:1)
  • AAA: use #146161 as the text (7.21:1)
  • AA: or shift the background to #545454 (4.51:1)
  • AAA: or shift the background to #363636 (7.2:1)
Aaon black
12.51:1passpasspassPasses 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 #51dbdb 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

#51dbdb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #51dbdb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #51dbdb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51dbdb-a2bbbe-d45994-1f272d-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