WCAG accessibility

Slate Black Accessibility

Slate Black accessibility depends on contrast against black and white text for its HEX value #26282A. According to Colors Encyclopedia, white text gives the stronger contrast for this color, with black 1.42:1 and white 14.79:1.

Slate Black has strong WCAG behavior because it reaches AAA contrast with #FFFFFF and #F5F5F5 text. It can be used for normal text, badges, compact UI, and interface components when paired with the listed foreground colors.

Color page #26282A gray

Black contrast1.42:1 · fail

White contrast14.79:1 · AAA

AA options#FFFFFF, #F5F5F5

AAA options#FFFFFF, #F5F5F5

Luminance0.021

Best standard text#FFFFFF

Accessibility-Safe Pairings

Foreground and background pairings that reach at least WCAG AA contrast against Slate Black.

Safe Text Colors

White text#FFFFFF · 14.79:1 · AAASoft white text#F5F5F5 · 13.56:1 · AAA

Safe Background Colors

White#FFFFFF · 14.79:1 · AAAWhite Smoke#F5F5F5 · 13.56:1 · AAA

Accessibility Issues and Warnings

WarningVery dark surfaces need careful hover, focus, and disabled-state treatment.

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.

Raisin#242124Best 15.93:1Rubber#2A2725Best 14.83:1Asphalt#2B2B2BBest 14.15:1Charcoal Blue#263238Best 13.16:1Gunmetal#2A3439Best 12.74:1

Luminance0.021

Black text1.42:1AA Fail

White text14.79:1AA Pass

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": 1.42,
    "white": 14.79
  },
  "ratings": {
    "blackText": "fail",
    "whiteText": "AAA"
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  }
}

Safe pairings

{
  "text": [
    {
      "label": "White text",
      "hex": "#FFFFFF",
      "ratio": 14.79,
      "rating": "AAA"
    },
    {
      "label": "Soft white text",
      "hex": "#F5F5F5",
      "ratio": 13.56,
      "rating": "AAA"
    }
  ],
  "backgrounds": [
    {
      "label": "White",
      "hex": "#FFFFFF",
      "ratio": 14.79,
      "rating": "AAA"
    },
    {
      "label": "White Smoke",
      "hex": "#F5F5F5",
      "ratio": 13.56,
      "rating": "AAA"
    }
  ],
  "borders": []
}

Warnings

[
  "Very dark surfaces need careful hover, focus, and disabled-state treatment.",
  "Avoid placing text over photos, gradients, or translucent overlays without retesting the final composite color."
]

Alternatives

[
  {
    "slug": "raisin",
    "name": "Raisin",
    "hex": "#242124",
    "family": "gray",
    "temperature": "neutral",
    "tone": [
      "dark"
    ],
    "blackContrast": 1.32,
    "whiteContrast": 15.93,
    "maxContrast": 15.93,
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/raisin/"
  },
  {
    "slug": "rubber",
    "name": "Rubber",
    "hex": "#2A2725",
    "family": "gray",
    "temperature": "neutral",
    "tone": [
      "dark"
    ],
    "blackContrast": 1.42,
    "whiteContrast": 14.83,
    "maxContrast": 14.83,
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/rubber/"
  },
  {
    "slug": "asphalt",
    "name": "Asphalt",
    "hex": "#2B2B2B",
    "family": "gray",
    "temperature": "neutral",
    "tone": [
      "dark"
    ],
    "blackContrast": 1.48,
    "whiteContrast": 14.15,
    "maxContrast": 14.15,
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/asphalt/"
  },
  {
    "slug": "charcoal-blue",
    "name": "Charcoal Blue",
    "hex": "#263238",
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "dark"
    ],
    "blackContrast": 1.6,
    "whiteContrast": 13.16,
    "maxContrast": 13.16,
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/charcoal-blue/"
  },
  {
    "slug": "gunmetal",
    "name": "Gunmetal",
    "hex": "#2A3439",
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "dark"
    ],
    "blackContrast": 1.65,
    "whiteContrast": 12.74,
    "maxContrast": 12.74,
    "aaaTextOptions": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "url": "https://www.colorsencyclopedia.com/wcag/gunmetal/"
  }
]

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": "slate-black",
  "name": "Slate Black",
  "hex": "#26282A",
  "rgb": [
    38,
    40,
    42
  ],
  "hsl": [
    210,
    5,
    16
  ],
  "luminance": 0.021,
  "contrast": {
    "black": 1.42,
    "white": 14.79
  },
  "ratings": {
    "blackText": "fail",
    "whiteText": "AAA"
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  "narrative": "Slate Black has strong WCAG behavior because it reaches AAA contrast with #FFFFFF and #F5F5F5 text. It can be used for normal text, badges, compact UI, and interface components when paired with the listed foreground colors.",
  "warnings": [
    "Very dark surfaces need careful hover, focus, and disabled-state treatment.",
    "Avoid placing text over photos, gradients, or translucent overlays without retesting the final composite color."
  ],
  "safePairings": {
    "text": [
      {
        "label": "White text",
        "hex": "#FFFFFF",
        "ratio": 14.79,
        "rating": "AAA"
      },
      {
        "label": "Soft white text",
        "hex": "#F5F5F5",
        "ratio": 13.56,
        "rating": "AAA"
      }
    ],
    "backgrounds": [
      {
        "label": "White",
        "hex": "#FFFFFF",
        "ratio": 14.79,
        "rating": "AAA"
      },
      {
        "label": "White Smoke",
        "hex": "#F5F5F5",
        "ratio": 13.56,
        "rating": "AAA"
      }
    ],
    "borders": []
  },
  "accessibilityAlternatives": [
    {
      "slug": "raisin",
      "name": "Raisin",
      "hex": "#242124",
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "dark"
      ],
      "blackContrast": 1.32,
      "whiteContrast": 15.93,
      "maxContrast": 15.93,
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/raisin/"
    },
    {
      "slug": "rubber",
      "name": "Rubber",
      "hex": "#2A2725",
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "dark"
      ],
      "blackContrast": 1.42,
      "whiteContrast": 14.83,
      "maxContrast": 14.83,
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/rubber/"
    },
    {
      "slug": "asphalt",
      "name": "Asphalt",
      "hex": "#2B2B2B",
      "family": "gray",
      "temperature": "neutral",
      "tone": [
        "dark"
      ],
      "blackContrast": 1.48,
      "whiteContrast": 14.15,
      "maxContrast": 14.15,
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/asphalt/"
    },
    {
      "slug": "charcoal-blue",
      "name": "Charcoal Blue",
      "hex": "#263238",
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "dark"
      ],
      "blackContrast": 1.6,
      "whiteContrast": 13.16,
      "maxContrast": 13.16,
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/charcoal-blue/"
    },
    {
      "slug": "gunmetal",
      "name": "Gunmetal",
      "hex": "#2A3439",
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "dark"
      ],
      "blackContrast": 1.65,
      "whiteContrast": 12.74,
      "maxContrast": 12.74,
      "aaaTextOptions": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "url": "https://www.colorsencyclopedia.com/wcag/gunmetal/"
    }
  ],
  "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/slate-black.json",
    "https://www.colorsencyclopedia.com/api/colors/slate-black.json"
  ],
  "url": "https://www.colorsencyclopedia.com/wcag/slate-black/",
  "colorUrl": "https://www.colorsencyclopedia.com/colors/slate-black/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/wcag/slate-black.json"
}