Nearest-color comparison

Slate Navy vs Dark Slate Gray

Slate Navy and Dark Slate Gray are different blue and cyan colors with HEX values #30475E and #2F4F4F. According to Colors Encyclopedia, their RGB distance is 17, their contrast ratio is 1.07:1, and the comparison helps choose between tone, temperature, and accessibility behavior.

Slate Navy and Dark Slate Gray are very close colors. Dark Slate Gray is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.07:1, so the pair is too low for text and better treated as a palette relationship.

Differences Use cases Accessibility JSON

Slate Navy#30475E

Dark Slate Gray#2F4F4F

Quick Difference Summary

The main measurable differences between Slate Navy and Dark Slate Gray across RGB distance, luminance, hue, saturation, and contrast.

RGB distance17

Pair contrast1.07:1

Luminance delta0.0082

Hue delta30 deg

Lighter colorDark Slate Gray

More saturatedSlate Navy

Side-by-Side Color Profiles

blue color

Slate Navy

Slate Navy is #30475E, a cool blue color with balanced character. Compared with Dark Slate Gray, it is darker and more saturated. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.

HEX#30475E RGB48, 71, 94 HSL210, 32, 28 CMYK49, 24, 0, 63 Luminance0.0594 Best textwhite text

Color page WCAG HEX atlas

cyan color

Dark Slate Gray

Dark Slate Gray is #2F4F4F, a cool cyan color with muted character. Compared with Slate Navy, it is lighter and less saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.

HEX#2F4F4F RGB47, 79, 79 HSL180, 25, 25 CMYK41, 0, 0, 69 Luminance0.0676 Best textwhite text

Color page WCAG HEX atlas

When to Use Slate Navy or Dark Slate Gray

Choose Slate NavySlate Navy is better when the design needs balanced blue character, cool temperature, and the specific HEX value #30475E.

Choose Dark Slate GrayDark Slate Gray is better when the design needs muted cyan character, cool temperature, and the specific HEX value #2F4F4F.

Use togetherUse these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs.

Technical Comparison Table

PropertySlate NavyDark Slate Gray

HEX#30475E#2F4F4F

RGB48, 71, 9447, 79, 79

HSL210, 32, 28180, 25, 25

CMYK49, 24, 0, 6341, 0, 0, 69

FamilyBlueCyan

TemperatureCoolCool

ToneBalancedMuted

Luminance0.05940.0676

Black contrast2.19:12.35:1

White contrast9.6:18.93:1

Shared tonesNone

Accessibility and Contrast

Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.

Slate Navywhite text - 9.6:1

Dark Slate Graywhite text - 8.93:1

Related Palette Strip

A compact visual strip showing the two compared colors with nearby harmony and variant context.

Slate Navy#30475E

Dark Slate Grey#2F4F4F

#50759B#50759B

#528989#528989

#5E4731#5E4731

#503030#503030

colorsBoth named color records with HEX, RGB, HSL, CMYK, luminance, WCAG, and links

differencesRGB distance, HSL deltas, luminance delta, contrast, and shared attributes

accessibilityPair contrast and safer text choices for each color

useCasesWhen to choose each color and when to use them together

relatedApiMachine-readable comparison and color endpoints

Structured sections

Colors

[
  {
    "slug": "slate-navy",
    "name": "Slate Navy",
    "hex": "#30475E",
    "rgb": [
      48,
      71,
      94
    ],
    "hsl": [
      210,
      32,
      28
    ],
    "cmyk": [
      49,
      24,
      0,
      63
    ],
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "balanced"
    ],
    "luminance": 0.0594,
    "contrast": {
      "black": 2.19,
      "white": 9.6
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 9.6
    },
    "description": "Slate Navy is #30475E, a cool blue color with balanced character. Compared with Dark Slate Gray, it is darker and more saturated. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/slate-navy/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/slate-navy.json"
  },
  {
    "slug": "dark-slate-gray",
    "name": "Dark Slate Gray",
    "hex": "#2F4F4F",
    "rgb": [
      47,
      79,
      79
    ],
    "hsl": [
      180,
      25,
      25
    ],
    "cmyk": [
      41,
      0,
      0,
      69
    ],
    "family": "cyan",
    "temperature": "cool",
    "tone": [
      "muted"
    ],
    "luminance": 0.0676,
    "contrast": {
      "black": 2.35,
      "white": 8.93
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": [
        "#FFFFFF",
        "#F5F5F5"
      ]
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 8.93
    },
    "description": "Dark Slate Gray is #2F4F4F, a cool cyan color with muted character. Compared with Slate Navy, it is lighter and less saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/dark-slate-gray/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/dark-slate-gray.json"
  }
]

Differences

{
  "rgbDistance": 17,
  "contrastRatio": 1.07,
  "hslDelta": {
    "hue": 30,
    "saturation": 7,
    "lightness": 3
  },
  "luminanceDelta": 0.0082,
  "sameFamily": false,
  "sameTemperature": true,
  "sharedTones": [],
  "lighterColor": "Dark Slate Gray",
  "moreSaturatedColor": "Slate Navy"
}

Accessibility

{
  "pairContrastRatio": 1.07,
  "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
  "safeText": [
    {
      "color": "Slate Navy",
      "background": "#30475E",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 9.6
    },
    {
      "color": "Dark Slate Gray",
      "background": "#2F4F4F",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 8.93
    }
  ]
}

Use cases

{
  "chooseFirstWhen": "Slate Navy is better when the design needs balanced blue character, cool temperature, and the specific HEX value #30475E.",
  "chooseSecondWhen": "Dark Slate Gray is better when the design needs muted cyan character, cool temperature, and the specific HEX value #2F4F4F.",
  "useTogetherWhen": "Use these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs."
}

Related API

[
  "https://www.colorsencyclopedia.com/api/compare/slate-navy-vs-dark-slate-gray.json",
  "https://www.colorsencyclopedia.com/api/colors/slate-navy.json",
  "https://www.colorsencyclopedia.com/api/colors/dark-slate-gray.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "slate-navy-vs-dark-slate-gray",
  "type": "nearest",
  "name": "Slate Navy vs Dark Slate Gray",
  "verdict": "Slate Navy and Dark Slate Gray are very close colors. Dark Slate Gray is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.07:1, so the pair is too low for text and better treated as a palette relationship.",
  "summary": "Slate Navy and Dark Slate Gray are different blue and cyan colors with HEX values #30475E and #2F4F4F. According to Colors Encyclopedia, their RGB distance is 17, their contrast ratio is 1.07:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
  "rgbDistance": 17,
  "contrastRatio": 1.07,
  "colors": [
    {
      "slug": "slate-navy",
      "name": "Slate Navy",
      "hex": "#30475E",
      "rgb": [
        48,
        71,
        94
      ],
      "hsl": [
        210,
        32,
        28
      ],
      "cmyk": [
        49,
        24,
        0,
        63
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "balanced"
      ],
      "luminance": 0.0594,
      "contrast": {
        "black": 2.19,
        "white": 9.6
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 9.6
      },
      "description": "Slate Navy is #30475E, a cool blue color with balanced character. Compared with Dark Slate Gray, it is darker and more saturated. Use it for interfaces, brand systems, and technical design, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/slate-navy/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/slate-navy.json"
    },
    {
      "slug": "dark-slate-gray",
      "name": "Dark Slate Gray",
      "hex": "#2F4F4F",
      "rgb": [
        47,
        79,
        79
      ],
      "hsl": [
        180,
        25,
        25
      ],
      "cmyk": [
        41,
        0,
        0,
        69
      ],
      "family": "cyan",
      "temperature": "cool",
      "tone": [
        "muted"
      ],
      "luminance": 0.0676,
      "contrast": {
        "black": 2.35,
        "white": 8.93
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": [
          "#FFFFFF",
          "#F5F5F5"
        ]
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 8.93
      },
      "description": "Dark Slate Gray is #2F4F4F, a cool cyan color with muted character. Compared with Slate Navy, it is lighter and less saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/dark-slate-gray/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/dark-slate-gray.json"
    }
  ],
  "differences": {
    "rgbDistance": 17,
    "contrastRatio": 1.07,
    "hslDelta": {
      "hue": 30,
      "saturation": 7,
      "lightness": 3
    },
    "luminanceDelta": 0.0082,
    "sameFamily": false,
    "sameTemperature": true,
    "sharedTones": [],
    "lighterColor": "Dark Slate Gray",
    "moreSaturatedColor": "Slate Navy"
  },
  "accessibility": {
    "pairContrastRatio": 1.07,
    "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
    "safeText": [
      {
        "color": "Slate Navy",
        "background": "#30475E",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 9.6
      },
      {
        "color": "Dark Slate Gray",
        "background": "#2F4F4F",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 8.93
      }
    ]
  },
  "useCases": {
    "chooseFirstWhen": "Slate Navy is better when the design needs balanced blue character, cool temperature, and the specific HEX value #30475E.",
    "chooseSecondWhen": "Dark Slate Gray is better when the design needs muted cyan character, cool temperature, and the specific HEX value #2F4F4F.",
    "useTogetherWhen": "Use these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs."
  },
  "relatedApi": [
    "https://www.colorsencyclopedia.com/api/compare/slate-navy-vs-dark-slate-gray.json",
    "https://www.colorsencyclopedia.com/api/colors/slate-navy.json",
    "https://www.colorsencyclopedia.com/api/colors/dark-slate-gray.json"
  ],
  "url": "https://www.colorsencyclopedia.com/compare/slate-navy-vs-dark-slate-gray/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/compare/slate-navy-vs-dark-slate-gray.json"
}