WCAG accessibility

Green Yellow Accessibility

Green Yellow #ADFF2F contrast: 17.12:1 with black and 1.23:1 with white. Black is stronger; review AA/AAA status, pairings and alternatives.

Green Yellow (#ADFF2F) measures 17.12:1 against black and 1.23:1 against white. It clears both the 4.5:1 AA and 7:1 AAA thresholds for normal text with black. Black is the stronger standard foreground; white measures 1.23:1. Retest after adding opacity, gradients, images or overlays.

Color page #ADFF2F green

Black contrast17.12:1 · AAA

White contrast1.23:1 · fail

AA options#000000, #1A1A1A, #36454F

AAA options#000000, #1A1A1A, #36454F

Luminance0.8061

Best standard text#000000

Accessibility-Safe Pairings

Foreground and background pairings that reach at least WCAG AA contrast against Green Yellow.

Safe Text Colors

Black text#000000 · 17.12:1 · AAA

Dark UI text#111827 · 14.46:1 · AAA

Safe Background Colors

#111827#111827 · 14.46:1 · AAA

Black#000000 · 17.12:1 · AAA

Accessibility Issues and Warnings

WarningVery light surfaces can disappear against white layouts without a visible border.

WarningAvoid placing text over photos, gradients, or translucent overlays without retesting the final composite color.

Accessibility in UI Components

ButtonUse checked foreground text and a visible focus ring.

BadgePrefer bold labels and enough horizontal padding.

Card borderUse as a non-text accent when text contrast is tight.

Accessibility Alternatives

Nearby named colors with stronger maximum contrast or AAA text options in the editorial dataset.

Electric Lime#CCFF00Best 17.87:1Chartreuse#7FFF00Best 16.21:1Pear#D1E231Best 14.63:1Yellow Green#9ACD32Best 11.15:1Peridot#B4C424Best 10.86:1

Luminance0.8061

Black text17.12:1AA Pass

White text1.23:1AA Fail

contrastBlack and white contrast ratios

ratingsWCAG rating by foreground color

wcagAA and AAA text options

safePairingsText, background, and border pairings

warningsPractical accessibility risks

accessibilityAlternativesNearby stronger named colors

Structured sections

Contrast

{
  "contrast": {
    "black": 17.12,
    "white": 1.23
  },
  "ratings": {
    "blackText": "AAA",
    "whiteText": "fail"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "AAA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  }
}

Safe pairings

{
  "text": [
    {
      "label": "Black text",
      "hex": "#000000",
      "ratio": 17.12,
      "rating": "AAA"
    },
    {
      "label": "Dark UI text",
      "hex": "#111827",
      "ratio": 14.46,
      "rating": "AAA"
    }
  ],
  "backgrounds": [
    {
      "label": "#111827",
      "hex": "#111827",
      "ratio": 14.46,
      "rating": "AAA"
    },
    {
      "label": "Black",
      "hex": "#000000",
      "ratio": 17.12,
      "rating": "AAA"
    }
  ],
  "borders": []
}

Warnings

[
  "Very light surfaces can disappear against white layouts without a visible border.",
  "Avoid placing text over photos, gradients, or translucent overlays without retesting the final composite color."
]

Alternatives

[
  {
    "slug": "electric-lime",
    "name": "Electric Lime",
    "hex": "#CCFF00",
    "family": "green",
    "temperature": "cool",
    "tone": [
      "vibrant"
    ],
    "blackContrast": 17.87,
    "whiteContrast": 1.18,
    "maxContrast": 17.87,
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/electric-lime/"
  },
  {
    "slug": "chartreuse",
    "name": "Chartreuse",
    "hex": "#7FFF00",
    "family": "green",
    "temperature": "cool",
    "tone": [
      "vibrant"
    ],
    "blackContrast": 16.21,
    "whiteContrast": 1.3,
    "maxContrast": 16.21,
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/chartreuse/"
  },
  {
    "slug": "pear",
    "name": "Pear",
    "hex": "#D1E231",
    "family": "yellow",
    "temperature": "warm",
    "tone": [
      "vibrant"
    ],
    "blackContrast": 14.63,
    "whiteContrast": 1.44,
    "maxContrast": 14.63,
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/pear/"
  },
  {
    "slug": "yellow-green",
    "name": "Yellow Green",
    "hex": "#9ACD32",
    "family": "green",
    "temperature": "cool",
    "tone": [
      "earth-tone"
    ],
    "blackContrast": 11.15,
    "whiteContrast": 1.88,
    "maxContrast": 11.15,
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/yellow-green/"
  },
  {
    "slug": "peridot",
    "name": "Peridot",
    "hex": "#B4C424",
    "family": "yellow",
    "temperature": "warm",
    "tone": [
      "balanced"
    ],
    "blackContrast": 10.86,
    "whiteContrast": 1.93,
    "maxContrast": 10.86,
    "aaaTextOptions": [
      "#000000",
      "#1A1A1A"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/peridot/"
  }
]

Component guidance

[
  {
    "component": "Buttons",
    "guidance": "Use only with AA-passing foreground text and visible focus states."
  },
  {
    "component": "Badges",
    "guidance": "Works best with bold labels and enough padding around text."
  },
  {
    "component": "Cards",
    "guidance": "Use as a surface when paired with a tested text color and clear border."
  },
  {
    "component": "Alerts",
    "guidance": "Pair with icons or labels; do not rely on color alone."
  },
  {
    "component": "Form fields",
    "guidance": "Use for borders or focus rings only when contrast remains visible."
  }
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "green-yellow",
  "name": "Green Yellow",
  "hex": "#ADFF2F",
  "rgb": [
    173,
    255,
    47
  ],
  "hsl": [
    84,
    100,
    59
  ],
  "luminance": 0.8061,
  "contrast": {
    "black": 17.12,
    "white": 1.23
  },
  "ratings": {
    "blackText": "AAA",
    "whiteText": "fail"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "AAA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ]
  },
  "narrative": "Green Yellow has strong WCAG behavior because it reaches AAA contrast with #000000, #1A1A1A, and #36454F text. It can be used for normal text, badges, compact UI, and interface components when paired with the listed foreground colors.",
  "warnings": [
    "Very light surfaces can disappear against white layouts without a visible border.",
    "Avoid placing text over photos, gradients, or translucent overlays without retesting the final composite color."
  ],
  "safePairings": {
    "text": [
      {
        "label": "Black text",
        "hex": "#000000",
        "ratio": 17.12,
        "rating": "AAA"
      },
      {
        "label": "Dark UI text",
        "hex": "#111827",
        "ratio": 14.46,
        "rating": "AAA"
      }
    ],
    "backgrounds": [
      {
        "label": "#111827",
        "hex": "#111827",
        "ratio": 14.46,
        "rating": "AAA"
      },
      {
        "label": "Black",
        "hex": "#000000",
        "ratio": 17.12,
        "rating": "AAA"
      }
    ],
    "borders": []
  },
  "accessibilityAlternatives": [
    {
      "slug": "electric-lime",
      "name": "Electric Lime",
      "hex": "#CCFF00",
      "family": "green",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "blackContrast": 17.87,
      "whiteContrast": 1.18,
      "maxContrast": 17.87,
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/electric-lime/"
    },
    {
      "slug": "chartreuse",
      "name": "Chartreuse",
      "hex": "#7FFF00",
      "family": "green",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "blackContrast": 16.21,
      "whiteContrast": 1.3,
      "maxContrast": 16.21,
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A",
        "#36454F"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/chartreuse/"
    },
    {
      "slug": "pear",
      "name": "Pear",
      "hex": "#D1E231",
      "family": "yellow",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "blackContrast": 14.63,
      "whiteContrast": 1.44,
      "maxContrast": 14.63,
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/pear/"
    },
    {
      "slug": "yellow-green",
      "name": "Yellow Green",
      "hex": "#9ACD32",
      "family": "green",
      "temperature": "cool",
      "tone": [
        "earth-tone"
      ],
      "blackContrast": 11.15,
      "whiteContrast": 1.88,
      "maxContrast": 11.15,
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/yellow-green/"
    },
    {
      "slug": "peridot",
      "name": "Peridot",
      "hex": "#B4C424",
      "family": "yellow",
      "temperature": "warm",
      "tone": [
        "balanced"
      ],
      "blackContrast": 10.86,
      "whiteContrast": 1.93,
      "maxContrast": 10.86,
      "aaaTextOptions": [
        "#000000",
        "#1A1A1A"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/peridot/"
    }
  ],
  "componentGuidance": [
    {
      "component": "Buttons",
      "guidance": "Use only with AA-passing foreground text and visible focus states."
    },
    {
      "component": "Badges",
      "guidance": "Works best with bold labels and enough padding around text."
    },
    {
      "component": "Cards",
      "guidance": "Use as a surface when paired with a tested text color and clear border."
    },
    {
      "component": "Alerts",
      "guidance": "Pair with icons or labels; do not rely on color alone."
    },
    {
      "component": "Form fields",
      "guidance": "Use for borders or focus rings only when contrast remains visible."
    }
  ],
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/wcag/green-yellow.json",
    "https://www.colorsencyclopedia.com/api/colors/green-yellow.json"
  ],
  "url": "https://www.colorsencyclopedia.com/wcag/green-yellow/",
  "colorUrl": "https://www.colorsencyclopedia.com/colors/green-yellow/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/wcag/green-yellow.json"
}