Color

#51ced2

#51ced2
hex#51ced2
rgbrgb(81, 206, 210)
hslhsl(182, 59%, 57%)
oklchoklch(0.784 0.109 198.1)
Closest name: mediumturquoise (#48d1cc)Relative luminance 0.5055

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d25551

#51d296 · #518dd2

#d251ce · #ced251

Split-complementary

Open in tool →

#d2518d · #d29651

#9651d2 · #d25551 · #8dd251

Contrast

#51ced2 as textRatioAAAA largeAAAFix
Aaon white
1.89:1failfailfail
  • AA: use #238286 as the text (4.56:1)
  • AAA: use #195f61 as the text (7.37:1)
  • AA: or shift the background to #4a4a4a (4.69:1)
  • AAA: or shift the background to #2e2e2e (7.18:1)
Aaon black
11.11:1passpasspassPasses 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 #51ced2 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

#51ced2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #51ced2
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 #51ced2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51ced2-a2babe-d45990-1f272d-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