Nearest-color comparison
Cinnabar #E44D2E vs Fire Opal #E95C20: RGB distance 21.1 and contrast 1.11:1. Compare hue, luminance, saturation, WCAG and practical use.
Cinnabar and Fire Opal are very close, with an RGB distance of 21.1. Fire Opal is lighter by 0.0308, and Fire Opal is more saturated by 5 percentage points. Their mutual contrast is 1.11:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Cinnabar and Fire Opal across RGB distance, luminance, hue, saturation, and contrast.
red color
Cinnabar is #E44D2E, a warm red with hue 10°, saturation 77% and luminance 0.22. Beside Fire Opal, it is darker and less saturated. Of the two standard text choices, black text gives the higher contrast at 5.4:1.
orange color
Fire Opal is #E95C20, a warm orange with hue 18°, saturation 82% and luminance 0.2508. Beside Cinnabar, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 6.02:1.
Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.
Downloadable color comparison infographic
Save a high-resolution comparison infographic with both HEX colors, visual distance, mutual contrast, and accessibility guidance.
A compact visual strip showing the two compared colors with nearby harmony and variant context.
Machine-readable data
Structured comparison data for Cinnabar and Fire Opal, including color systems, RGB distance, HSL deltas, contrast, accessibility guidance, use cases, and API links.
Colors Encyclopedia
colorsBoth named color records with HEX, RGB, HSL, CMYK, luminance, WCAG, and linksdifferencesRGB distance, HSL deltas, luminance delta, contrast, and shared attributesaccessibilityPair contrast and safer text choices for each coloruseCasesWhen to choose each color and when to use them togetherrelatedApiMachine-readable comparison and color endpoints[
{
"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"
}
]{
"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"
}{
"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
}
]
}{
"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."
}[
"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"
]{
"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"
}