Colors Encyclopedia

Named color

Medium Aquamarine

Medium Aquamarine is an earth tone green color with HEX #66CDAA. According to Colors Encyclopedia, it has RGB 102, 205, 170, HSL 160, 51%, 60%, cool temperature, and is useful for web design, CSS color systems, and UI prototyping.

#66CDAA green cool earth-tone
HEX #66CDAA
RGB rgb(102, 205, 170)
HSL hsl(160 51% 60%)
CMYK cmyk(50, 0, 17, 20)
Luminance 0.4939
Contrast Black 10.88:1White 1.93:1

CSS Utilities

--color-medium-aquamarine: #66CDAA;
.bg-medium-aquamarine { background-color: #66CDAA; }
.text-medium-aquamarine { color: #66CDAA; }
Open CSS utility pageReusable variables, classes, examples, and implementation notes

Machine-readable data

Machine-Readable Color Data (JSON)

Perfect for CSS, design systems, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.4939
Black text10.88:1AA Pass
White text1.93:1AA Fail
hexCanonical HEX value
rgbRed, green, blue channels
hslHue, saturation, lightness
cmykApproximate print conversion
wcagAA and AAA contrast options
harmoniesMathematical harmony sets
variantsGenerated tone variants
nearestColorsKnowledge graph neighbors
Download JSON Open API
Structured sections
Color systems
{
  "hex": "#66CDAA",
  "rgb": [
    102,
    205,
    170
  ],
  "hsl": [
    160,
    51,
    60
  ],
  "cmyk": [
    50,
    0,
    17,
    20
  ],
  "luminance": 0.4939,
  "contrast": {
    "black": 10.88,
    "white": 1.93
  }
}
WCAG
{
  "AA": [
    "#000000",
    "#1A1A1A",
    "#36454F"
  ],
  "AAA": [
    "#000000",
    "#1A1A1A"
  ]
}
Harmonies
{
  "complementary": "#CD6588",
  "analogous": [
    "#65CD76",
    "#65BCCD"
  ],
  "triadic": [
    "#AA65CD",
    "#CDAA65"
  ],
  "tetradic": [
    "#7665CD",
    "#CD6588",
    "#BCCD65"
  ],
  "splitComplementary": [
    "#CD65BC",
    "#CD7665"
  ],
  "monochromatic": [
    "#AAE4D0",
    "#66CDAA",
    "#34A27D"
  ]
}
Variants
{
  "light": "#AAE4D0",
  "dark": "#34A27D",
  "saturated": "#4FE3B2",
  "desaturated": "#7BB7A3",
  "pastel": "#CBE7DD",
  "neon": "#5CFFC9"
}
Pairings
{
  "best": [
    "#000000",
    "#CD6588",
    "#65CD76",
    "#65BCCD"
  ],
  "avoid": [
    "#7BB7A3",
    "#AAE4D0"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#AAE4D0",
    "#7BB7A3"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "verdigris",
    "medium-turquoise",
    "glacier-blue",
    "cadet-blue",
    "dark-sea-green"
  ],
  "generatedPalettes": [
    "medium-aquamarine"
  ],
  "generatedComparisons": [
    "medium-aquamarine-vs-medium-turquoise",
    "medium-aquamarine-vs-verdigris"
  ],
  "relatedFamilies": [
    "/colors/by-family/green",
    "/colors/by-temperature/cool",
    "/colors/by-tone/earth-tone"
  ],
  "relatedTools": [
    "/harmonies/medium-aquamarine",
    "/wcag/medium-aquamarine",
    "/css/colors/medium-aquamarine",
    "/hex/66cdaa"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/green",
      "/colors/by-temperature/cool",
      "/colors/by-tone/earth-tone"
    ],
    "narrower": [
      "/palettes/medium-aquamarine"
    ],
    "related": [
      "/colors/verdigris",
      "/colors/medium-turquoise",
      "/colors/glacier-blue",
      "/colors/cadet-blue",
      "/colors/dark-sea-green",
      "/compare/medium-aquamarine-vs-medium-turquoise",
      "/compare/medium-aquamarine-vs-verdigris",
      "/harmonies/medium-aquamarine",
      "/wcag/medium-aquamarine",
      "/css/colors/medium-aquamarine",
      "/hex/66cdaa"
    ]
  }
}
Full JSON dataset 
{
  "slug": "medium-aquamarine",
  "name": "Medium Aquamarine",
  "cssName": "mediumaquamarine",
  "hex": "#66CDAA",
  "family": "green",
  "temperature": "cool",
  "tone": [
    "earth-tone"
  ],
  "uses": [
    "web design",
    "CSS color systems",
    "UI prototyping"
  ],
  "psychology": {
    "associations": [
      "context dependent"
    ],
    "contexts": [
      "web interfaces",
      "design systems",
      "technical color references"
    ],
    "avoidIn": [
      "claims that require brand or cultural specificity"
    ]
  },
  "aliases": [
    "mediumaquamarine"
  ],
  "sourceType": "standard",
  "confidence": "high",
  "sourceUrl": "https://www.w3.org/TR/css-color-4/#named-colors",
  "origin": {
    "type": "css",
    "notes": "Standard CSS named color."
  },
  "reviewStatus": "auto",
  "editorialNotes": "Generated from CSS named color data and computed color-system properties.",
  "tags": [
    "green",
    "cool",
    "earth-tone",
    "web-design",
    "css-color-systems",
    "ui-prototyping",
    "context-dependent"
  ],
  "popularity": 67,
  "rgb": [
    102,
    205,
    170
  ],
  "hsl": [
    160,
    51,
    60
  ],
  "cmyk": [
    50,
    0,
    17,
    20
  ],
  "luminance": 0.4939,
  "contrast": {
    "black": 10.88,
    "white": 1.93
  },
  "harmonies": {
    "complementary": "#CD6588",
    "analogous": [
      "#65CD76",
      "#65BCCD"
    ],
    "triadic": [
      "#AA65CD",
      "#CDAA65"
    ],
    "tetradic": [
      "#7665CD",
      "#CD6588",
      "#BCCD65"
    ],
    "splitComplementary": [
      "#CD65BC",
      "#CD7665"
    ],
    "monochromatic": [
      "#AAE4D0",
      "#66CDAA",
      "#34A27D"
    ]
  },
  "variants": {
    "light": "#AAE4D0",
    "dark": "#34A27D",
    "saturated": "#4FE3B2",
    "desaturated": "#7BB7A3",
    "pastel": "#CBE7DD",
    "neon": "#5CFFC9"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "AAA": [
      "#000000",
      "#1A1A1A"
    ]
  },
  "css": {
    "variable": "--color-medium-aquamarine: #66CDAA;",
    "utility": ".bg-medium-aquamarine { background-color: #66CDAA; }",
    "textUtility": ".text-medium-aquamarine { color: #66CDAA; }"
  },
  "nearestColors": [
    "verdigris",
    "medium-turquoise",
    "glacier-blue",
    "cadet-blue",
    "dark-sea-green"
  ],
  "generatedPalettes": [
    "medium-aquamarine"
  ],
  "generatedComparisons": [
    "medium-aquamarine-vs-medium-turquoise",
    "medium-aquamarine-vs-verdigris"
  ],
  "relatedFamilies": [
    "/colors/by-family/green",
    "/colors/by-temperature/cool",
    "/colors/by-tone/earth-tone"
  ],
  "relatedTools": [
    "/harmonies/medium-aquamarine",
    "/wcag/medium-aquamarine",
    "/css/colors/medium-aquamarine",
    "/hex/66cdaa"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/green",
      "/colors/by-temperature/cool",
      "/colors/by-tone/earth-tone"
    ],
    "narrower": [
      "/palettes/medium-aquamarine"
    ],
    "related": [
      "/colors/verdigris",
      "/colors/medium-turquoise",
      "/colors/glacier-blue",
      "/colors/cadet-blue",
      "/colors/dark-sea-green",
      "/compare/medium-aquamarine-vs-medium-turquoise",
      "/compare/medium-aquamarine-vs-verdigris",
      "/harmonies/medium-aquamarine",
      "/wcag/medium-aquamarine",
      "/css/colors/medium-aquamarine",
      "/hex/66cdaa"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#CD6588",
      "#65CD76",
      "#65BCCD"
    ],
    "avoid": [
      "#7BB7A3",
      "#AAE4D0"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#AAE4D0",
      "#7BB7A3"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Medium Aquamarine Color

Medium Aquamarine sits in the green family with cool temperature and earth tone visual character. Standard CSS named color.

Its common associations include context dependent, which makes it relevant for web interfaces and design systems. In design work, Medium Aquamarine is most useful for web design, css color systems, and ui prototyping, especially when paired with black text for stronger contrast.

Related Color Guides

Green color familyBrowse named green colors and compare nearby swatches.Cool colorsExplore colors with cool temperature behavior.Earth Tone colorsFind colors with earth tone visual character.Medium Aquamarine accessibilityCheck contrast and WCAG text options for #66CDAA.Medium Aquamarine CSS utilitiesUse Medium Aquamarine in CSS variables and utility classes.#66CDAA HEX atlasOpen the permanent HEX atlas record for conversions and variants.Medium Aquamarine paletteOpen the generated palette based on Medium Aquamarine.Medium Aquamarine harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Medium Aquamarine against black and white text.

Black text10.88:1AA Pass
White text1.93:1AA Fail
AA text options#000000, #1A1A1A, #36454F
AAA text options#000000, #1A1A1A
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Verdigris#43B3AE
Medium Turquoise#48D1CC
Glacier Blue#78B9D2
Cadet Blue#5F9EA0
Dark Sea Green#8FBC8F

Color Harmonies

#CD6588#CD6588
#65CD76#65CD76
#65BCCD#65BCCD
#AA65CD#AA65CD
#CDAA65#CDAA65
Open full Medium Aquamarine harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#AAE4D0#AAE4D0
#34A27D#34A27D
#4FE3B2#4FE3B2
#7BB7A3#7BB7A3
#CBE7DD#CBE7DD
#5CFFC9#5CFFC9

Pairings

Black#000000
#CD6588#CD6588
#65CD76#65CD76
#65BCCD#65BCCD
Matte Black#1A1A1A
White Smoke#F5F5F5