Nearest-color comparison

Cinnabar vs Fire Opal

Cinnabar and Fire Opal are different red and orange colors with HEX values #E44D2E and #E95C20. According to Colors Encyclopedia, their RGB distance is 21.1, their contrast ratio is 1.11:1, and the comparison helps choose between tone, temperature, and accessibility behavior.

Cinnabar and Fire Opal are very close colors. Fire Opal is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.11:1, so the pair is too low for text and better treated as a palette relationship.

Differences Use cases Accessibility JSON

Cinnabar#E44D2E

Fire Opal#E95C20

Quick Difference Summary

The main measurable differences between Cinnabar and Fire Opal across RGB distance, luminance, hue, saturation, and contrast.

RGB distance21.1

Pair contrast1.11:1

Luminance delta0.0308

Hue delta8 deg

Lighter colorFire Opal

More saturatedFire Opal

Side-by-Side Color Profiles

red color

Cinnabar

Cinnabar is #E44D2E, a warm red color with vibrant character. Compared with Fire Opal, it is darker and less saturated. Use it for branding accents, editorial palettes, and product design, with black text as the safer foreground option.

HEX#E44D2E RGB228, 77, 46 HSL10, 77, 54 CMYK0, 66, 80, 11 Luminance0.22 Best textblack text

Color page WCAG HEX atlas

orange color

Fire Opal

Fire Opal is #E95C20, a warm orange color with vibrant character. Compared with Cinnabar, it is lighter and more saturated. Use it for jewel-tone palettes, luxury branding, and premium interface accents, with black text as the safer foreground option.

HEX#E95C20 RGB233, 92, 32 HSL18, 82, 52 CMYK0, 61, 86, 9 Luminance0.2508 Best textblack text

Color page WCAG HEX atlas

When to Use Cinnabar or Fire Opal

Choose CinnabarCinnabar is better when the design needs vibrant red character, warm temperature, and the specific HEX value #E44D2E.

Choose Fire OpalFire Opal is better when the design needs vibrant orange character, warm temperature, and the specific HEX value #E95C20.

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

Technical Comparison Table

PropertyCinnabarFire Opal

HEX#E44D2E#E95C20

RGB228, 77, 46233, 92, 32

HSL10, 77, 5418, 82, 52

CMYK0, 66, 80, 110, 61, 86, 9

FamilyRedOrange

TemperatureWarmWarm

ToneVibrantVibrant

Luminance0.220.2508

Black contrast5.4:16.02:1

White contrast3.89:13.49:1

Shared tonesVibrant

Accessibility and Contrast

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

Cinnabarblack text - 5.4:1

Fire Opalblack text - 6.02:1

Related Palette Strip

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

Cinnabar#E44D2E

Fire Opal#E95C20

#EF9381#EF9381

#F19974#F19974

#2FC6E4#2FC6E4

#20ADE9#20ADE9

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": "cinnabar",
    "name": "Cinnabar",
    "hex": "#E44D2E",
    "rgb": [
      228,
      77,
      46
    ],
    "hsl": [
      10,
      77,
      54
    ],
    "cmyk": [
      0,
      66,
      80,
      11
    ],
    "family": "red",
    "temperature": "warm",
    "tone": [
      "vibrant"
    ],
    "luminance": 0.22,
    "contrast": {
      "black": 5.4,
      "white": 3.89
    },
    "wcag": {
      "AA": [
        "#000000"
      ],
      "AAA": []
    },
    "bestText": {
      "text": "#000000",
      "label": "black text",
      "ratio": 5.4
    },
    "description": "Cinnabar is #E44D2E, a warm red color with vibrant character. Compared with Fire Opal, it is darker and less saturated. Use it for branding accents, editorial palettes, and product design, with black text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/cinnabar/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/cinnabar.json"
  },
  {
    "slug": "fire-opal",
    "name": "Fire Opal",
    "hex": "#E95C20",
    "rgb": [
      233,
      92,
      32
    ],
    "hsl": [
      18,
      82,
      52
    ],
    "cmyk": [
      0,
      61,
      86,
      9
    ],
    "family": "orange",
    "temperature": "warm",
    "tone": [
      "vibrant"
    ],
    "luminance": 0.2508,
    "contrast": {
      "black": 6.02,
      "white": 3.49
    },
    "wcag": {
      "AA": [
        "#000000",
        "#1A1A1A"
      ],
      "AAA": []
    },
    "bestText": {
      "text": "#000000",
      "label": "black text",
      "ratio": 6.02
    },
    "description": "Fire Opal is #E95C20, a warm orange color with vibrant character. Compared with Cinnabar, it is lighter and more saturated. Use it for jewel-tone palettes, luxury branding, and premium interface accents, with black text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/fire-opal/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/fire-opal.json"
  }
]

Differences

{
  "rgbDistance": 21.1,
  "contrastRatio": 1.11,
  "hslDelta": {
    "hue": 8,
    "saturation": 5,
    "lightness": 2
  },
  "luminanceDelta": 0.0308,
  "sameFamily": false,
  "sameTemperature": true,
  "sharedTones": [
    "vibrant"
  ],
  "lighterColor": "Fire Opal",
  "moreSaturatedColor": "Fire Opal"
}

Accessibility

{
  "pairContrastRatio": 1.11,
  "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
  "safeText": [
    {
      "color": "Cinnabar",
      "background": "#E44D2E",
      "foreground": "#000000",
      "label": "black text",
      "ratio": 5.4
    },
    {
      "color": "Fire Opal",
      "background": "#E95C20",
      "foreground": "#000000",
      "label": "black text",
      "ratio": 6.02
    }
  ]
}

Use cases

{
  "chooseFirstWhen": "Cinnabar is better when the design needs vibrant red character, warm temperature, and the specific HEX value #E44D2E.",
  "chooseSecondWhen": "Fire Opal is better when the design needs vibrant orange character, warm temperature, and the specific HEX value #E95C20.",
  "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/cinnabar-vs-fire-opal.json",
  "https://www.colorsencyclopedia.com/api/colors/cinnabar.json",
  "https://www.colorsencyclopedia.com/api/colors/fire-opal.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "cinnabar-vs-fire-opal",
  "type": "nearest",
  "name": "Cinnabar vs Fire Opal",
  "verdict": "Cinnabar and Fire Opal are very close colors. Fire Opal is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.11:1, so the pair is too low for text and better treated as a palette relationship.",
  "summary": "Cinnabar and Fire Opal are different red and orange colors with HEX values #E44D2E and #E95C20. According to Colors Encyclopedia, their RGB distance is 21.1, their contrast ratio is 1.11:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
  "rgbDistance": 21.1,
  "contrastRatio": 1.11,
  "colors": [
    {
      "slug": "cinnabar",
      "name": "Cinnabar",
      "hex": "#E44D2E",
      "rgb": [
        228,
        77,
        46
      ],
      "hsl": [
        10,
        77,
        54
      ],
      "cmyk": [
        0,
        66,
        80,
        11
      ],
      "family": "red",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.22,
      "contrast": {
        "black": 5.4,
        "white": 3.89
      },
      "wcag": {
        "AA": [
          "#000000"
        ],
        "AAA": []
      },
      "bestText": {
        "text": "#000000",
        "label": "black text",
        "ratio": 5.4
      },
      "description": "Cinnabar is #E44D2E, a warm red color with vibrant character. Compared with Fire Opal, it is darker and less saturated. Use it for branding accents, editorial palettes, and product design, with black text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/cinnabar/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/cinnabar.json"
    },
    {
      "slug": "fire-opal",
      "name": "Fire Opal",
      "hex": "#E95C20",
      "rgb": [
        233,
        92,
        32
      ],
      "hsl": [
        18,
        82,
        52
      ],
      "cmyk": [
        0,
        61,
        86,
        9
      ],
      "family": "orange",
      "temperature": "warm",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.2508,
      "contrast": {
        "black": 6.02,
        "white": 3.49
      },
      "wcag": {
        "AA": [
          "#000000",
          "#1A1A1A"
        ],
        "AAA": []
      },
      "bestText": {
        "text": "#000000",
        "label": "black text",
        "ratio": 6.02
      },
      "description": "Fire Opal is #E95C20, a warm orange color with vibrant character. Compared with Cinnabar, it is lighter and more saturated. Use it for jewel-tone palettes, luxury branding, and premium interface accents, with black text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/fire-opal/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/fire-opal.json"
    }
  ],
  "differences": {
    "rgbDistance": 21.1,
    "contrastRatio": 1.11,
    "hslDelta": {
      "hue": 8,
      "saturation": 5,
      "lightness": 2
    },
    "luminanceDelta": 0.0308,
    "sameFamily": false,
    "sameTemperature": true,
    "sharedTones": [
      "vibrant"
    ],
    "lighterColor": "Fire Opal",
    "moreSaturatedColor": "Fire Opal"
  },
  "accessibility": {
    "pairContrastRatio": 1.11,
    "textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
    "safeText": [
      {
        "color": "Cinnabar",
        "background": "#E44D2E",
        "foreground": "#000000",
        "label": "black text",
        "ratio": 5.4
      },
      {
        "color": "Fire Opal",
        "background": "#E95C20",
        "foreground": "#000000",
        "label": "black text",
        "ratio": 6.02
      }
    ]
  },
  "useCases": {
    "chooseFirstWhen": "Cinnabar is better when the design needs vibrant red character, warm temperature, and the specific HEX value #E44D2E.",
    "chooseSecondWhen": "Fire Opal is better when the design needs vibrant orange character, warm temperature, and the specific HEX value #E95C20.",
    "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/cinnabar-vs-fire-opal.json",
    "https://www.colorsencyclopedia.com/api/colors/cinnabar.json",
    "https://www.colorsencyclopedia.com/api/colors/fire-opal.json"
  ],
  "url": "https://www.colorsencyclopedia.com/compare/cinnabar-vs-fire-opal/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/compare/cinnabar-vs-fire-opal.json"
}