Nearest-color comparison

Dark Olive Green vs Fern Frond

Dark Olive Green and Fern Frond are different green colors with HEX values #556B2F and #657220. According to Colors Encyclopedia, their RGB distance is 23, their contrast ratio is 1.13:1, and the comparison helps choose between tone, temperature, and accessibility behavior.

Dark Olive Green and Fern Frond are very close colors. Fern Frond is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.13:1, so the pair is too low for text and better treated as a palette relationship.

Differences Use cases Accessibility JSON

Dark Olive Green#556B2F

Fern Frond#657220

Quick Difference Summary

The main measurable differences between Dark Olive Green and Fern Frond across RGB distance, luminance, hue, saturation, and contrast.

RGB distance23

Pair contrast1.13:1

Luminance delta0.0226

Hue delta12 deg

Lighter colorFern Frond

More saturatedFern Frond

Side-by-Side Color Profiles

green color

Dark Olive Green

Dark Olive Green is #556B2F, a cool green color with earth tone character. Compared with Fern Frond, it is darker and less saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.

HEX#556B2F RGB85, 107, 47 HSL82, 39, 30 CMYK21, 0, 56, 58 Luminance0.1265 Best textwhite text

Color page WCAG HEX atlas

green color

Fern Frond

Fern Frond is #657220, a cool green color with earth tone and jewel tone character. Compared with Dark Olive Green, it is lighter and more saturated. Use it for botanical palettes, natural product design, and seasonal editorial palettes, with white text as the safer foreground option.

HEX#657220 RGB101, 114, 32 HSL70, 56, 29 CMYK11, 0, 72, 55 Luminance0.1491 Best textwhite text

Color page WCAG HEX atlas

When to Use Dark Olive Green or Fern Frond

Choose Dark Olive GreenDark Olive Green is better when the design needs earth tone green character, cool temperature, and the specific HEX value #556B2F.

Choose Fern FrondFern Frond is better when the design needs earth tone and jewel tone green character, cool temperature, and the specific HEX value #657220.

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

Technical Comparison Table

PropertyDark Olive GreenFern Frond

HEX#556B2F#657220

RGB85, 107, 47101, 114, 32

HSL82, 39, 3070, 56, 29

CMYK21, 0, 56, 5811, 0, 72, 55

FamilyGreenGreen

TemperatureCoolCool

ToneEarth ToneEarth Tone, Jewel Tone

Luminance0.12650.1491

Black contrast3.53:13.98:1

White contrast5.95:15.27:1

Shared tonesEarth Tone

Accessibility and Contrast

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

Dark Olive Greenwhite text - 5.95:1

Fern Frondwhite text - 5.27:1

Related Palette Strip

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

Dark Olive Green#556B2F

Fern Frond#657220

#87AA4B#87AA4B

#A5BB35#A5BB35

#452F6A#452F6A

#2E2173#2E2173

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": "dark-olive-green",
    "name": "Dark Olive Green",
    "hex": "#556B2F",
    "rgb": [
      85,
      107,
      47
    ],
    "hsl": [
      82,
      39,
      30
    ],
    "cmyk": [
      21,
      0,
      56,
      58
    ],
    "family": "green",
    "temperature": "cool",
    "tone": [
      "earth-tone"
    ],
    "luminance": 0.1265,
    "contrast": {
      "black": 3.53,
      "white": 5.95
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": []
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 5.95
    },
    "description": "Dark Olive Green is #556B2F, a cool green color with earth tone character. Compared with Fern Frond, it is darker 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-olive-green/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/dark-olive-green.json"
  },
  {
    "slug": "fern-frond",
    "name": "Fern Frond",
    "hex": "#657220",
    "rgb": [
      101,
      114,
      32
    ],
    "hsl": [
      70,
      56,
      29
    ],
    "cmyk": [
      11,
      0,
      72,
      55
    ],
    "family": "green",
    "temperature": "cool",
    "tone": [
      "earth-tone",
      "jewel-tone"
    ],
    "luminance": 0.1491,
    "contrast": {
      "black": 3.98,
      "white": 5.27
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": []
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 5.27
    },
    "description": "Fern Frond is #657220, a cool green color with earth tone and jewel tone character. Compared with Dark Olive Green, it is lighter and more saturated. Use it for botanical palettes, natural product design, and seasonal editorial palettes, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/fern-frond/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/fern-frond.json"
  }
]

Differences

{
  "rgbDistance": 23,
  "contrastRatio": 1.13,
  "hslDelta": {
    "hue": 12,
    "saturation": 17,
    "lightness": 1
  },
  "luminanceDelta": 0.0226,
  "sameFamily": true,
  "sameTemperature": true,
  "sharedTones": [
    "earth-tone"
  ],
  "lighterColor": "Fern Frond",
  "moreSaturatedColor": "Fern Frond"
}

Accessibility

{
  "pairContrastRatio": 1.13,
  "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
  "safeText": [
    {
      "color": "Dark Olive Green",
      "background": "#556B2F",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 5.95
    },
    {
      "color": "Fern Frond",
      "background": "#657220",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 5.27
    }
  ]
}

Use cases

{
  "chooseFirstWhen": "Dark Olive Green is better when the design needs earth tone green character, cool temperature, and the specific HEX value #556B2F.",
  "chooseSecondWhen": "Fern Frond is better when the design needs earth tone and jewel tone green character, cool temperature, and the specific HEX value #657220.",
  "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/dark-olive-green-vs-fern-frond.json",
  "https://www.colorsencyclopedia.com/api/colors/dark-olive-green.json",
  "https://www.colorsencyclopedia.com/api/colors/fern-frond.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "dark-olive-green-vs-fern-frond",
  "type": "nearest",
  "name": "Dark Olive Green vs Fern Frond",
  "verdict": "Dark Olive Green and Fern Frond are very close colors. Fern Frond is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.13:1, so the pair is too low for text and better treated as a palette relationship.",
  "summary": "Dark Olive Green and Fern Frond are different green colors with HEX values #556B2F and #657220. According to Colors Encyclopedia, their RGB distance is 23, their contrast ratio is 1.13:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
  "rgbDistance": 23,
  "contrastRatio": 1.13,
  "colors": [
    {
      "slug": "dark-olive-green",
      "name": "Dark Olive Green",
      "hex": "#556B2F",
      "rgb": [
        85,
        107,
        47
      ],
      "hsl": [
        82,
        39,
        30
      ],
      "cmyk": [
        21,
        0,
        56,
        58
      ],
      "family": "green",
      "temperature": "cool",
      "tone": [
        "earth-tone"
      ],
      "luminance": 0.1265,
      "contrast": {
        "black": 3.53,
        "white": 5.95
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": []
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 5.95
      },
      "description": "Dark Olive Green is #556B2F, a cool green color with earth tone character. Compared with Fern Frond, it is darker 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-olive-green/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/dark-olive-green.json"
    },
    {
      "slug": "fern-frond",
      "name": "Fern Frond",
      "hex": "#657220",
      "rgb": [
        101,
        114,
        32
      ],
      "hsl": [
        70,
        56,
        29
      ],
      "cmyk": [
        11,
        0,
        72,
        55
      ],
      "family": "green",
      "temperature": "cool",
      "tone": [
        "earth-tone",
        "jewel-tone"
      ],
      "luminance": 0.1491,
      "contrast": {
        "black": 3.98,
        "white": 5.27
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": []
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 5.27
      },
      "description": "Fern Frond is #657220, a cool green color with earth tone and jewel tone character. Compared with Dark Olive Green, it is lighter and more saturated. Use it for botanical palettes, natural product design, and seasonal editorial palettes, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/fern-frond/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/fern-frond.json"
    }
  ],
  "differences": {
    "rgbDistance": 23,
    "contrastRatio": 1.13,
    "hslDelta": {
      "hue": 12,
      "saturation": 17,
      "lightness": 1
    },
    "luminanceDelta": 0.0226,
    "sameFamily": true,
    "sameTemperature": true,
    "sharedTones": [
      "earth-tone"
    ],
    "lighterColor": "Fern Frond",
    "moreSaturatedColor": "Fern Frond"
  },
  "accessibility": {
    "pairContrastRatio": 1.13,
    "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
    "safeText": [
      {
        "color": "Dark Olive Green",
        "background": "#556B2F",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 5.95
      },
      {
        "color": "Fern Frond",
        "background": "#657220",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 5.27
      }
    ]
  },
  "useCases": {
    "chooseFirstWhen": "Dark Olive Green is better when the design needs earth tone green character, cool temperature, and the specific HEX value #556B2F.",
    "chooseSecondWhen": "Fern Frond is better when the design needs earth tone and jewel tone green character, cool temperature, and the specific HEX value #657220.",
    "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/dark-olive-green-vs-fern-frond.json",
    "https://www.colorsencyclopedia.com/api/colors/dark-olive-green.json",
    "https://www.colorsencyclopedia.com/api/colors/fern-frond.json"
  ],
  "url": "https://www.colorsencyclopedia.com/compare/dark-olive-green-vs-fern-frond/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/compare/dark-olive-green-vs-fern-frond.json"
}