Nearest-color comparison
Persian Red #CC3333 vs Vermilion #E34234: RGB distance 27.5 and contrast 1.25:1. Compare hue, luminance, saturation, WCAG and practical use.
Persian Red and Vermilion are related but distinguishable, with an RGB distance of 27.5. Vermilion is lighter by 0.0504, and Vermilion is more saturated by 16 percentage points. Their mutual contrast is 1.25:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Persian Red and Vermilion across RGB distance, luminance, hue, saturation, and contrast.
red color
Persian Red is #CC3333, a warm red with hue 0°, saturation 60% and luminance 0.1544. Beside Vermilion, it is darker and less saturated. Of the two standard text choices, white text gives the higher contrast at 5.14:1.
red color
Vermilion is #E34234, a warm red with hue 5°, saturation 76% and luminance 0.2048. Beside Persian Red, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 5.1:1.
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 Persian Red and Vermilion, 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": "persian-red",
"name": "Persian Red",
"hex": "#CC3333",
"rgb": [
204,
51,
51
],
"hsl": [
0,
60,
50
],
"cmyk": [
0,
75,
75,
20
],
"family": "red",
"temperature": "warm",
"tone": [
"balanced"
],
"luminance": 0.1544,
"contrast": {
"black": 4.09,
"white": 5.14
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": []
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 5.14
},
"description": "Persian Red is #CC3333, a warm red color with balanced character. Compared with Vermilion, it is darker and less saturated. Use it for historical references, pigment palettes, and cultural color systems, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/persian-red/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/persian-red.json"
},
{
"slug": "vermilion",
"name": "Vermilion",
"hex": "#E34234",
"rgb": [
227,
66,
52
],
"hsl": [
5,
76,
55
],
"cmyk": [
0,
71,
77,
11
],
"family": "red",
"temperature": "warm",
"tone": [
"vibrant"
],
"luminance": 0.2048,
"contrast": {
"black": 5.1,
"white": 4.12
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.1
},
"description": "Vermilion is #E34234, a warm red color with vibrant character. Compared with Persian Red, it is lighter and more 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/vermilion/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/vermilion.json"
}
]{
"rgbDistance": 27.5,
"contrastRatio": 1.25,
"hslDelta": {
"hue": 5,
"saturation": 16,
"lightness": 5
},
"luminanceDelta": 0.0504,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [],
"lighterColor": "Vermilion",
"moreSaturatedColor": "Vermilion"
}{
"pairContrastRatio": 1.25,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Persian Red",
"background": "#CC3333",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 5.14
},
{
"color": "Vermilion",
"background": "#E34234",
"foreground": "#000000",
"label": "black text",
"ratio": 5.1
}
]
}{
"chooseFirstWhen": "Persian Red is better when the design needs balanced red character, warm temperature, and the specific HEX value #CC3333.",
"chooseSecondWhen": "Vermilion is better when the design needs vibrant red character, warm temperature, and the specific HEX value #E34234.",
"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/persian-red-vs-vermilion.json",
"https://www.colorsencyclopedia.com/api/colors/persian-red.json",
"https://www.colorsencyclopedia.com/api/colors/vermilion.json"
]{
"datasetVersion": "1.0.0",
"slug": "persian-red-vs-vermilion",
"type": "nearest",
"name": "Persian Red vs Vermilion",
"verdict": "Persian Red and Vermilion are visually related colors. Vermilion is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.25:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Persian Red and Vermilion are different red colors with HEX values #CC3333 and #E34234. According to Colors Encyclopedia, their RGB distance is 27.5, their contrast ratio is 1.25:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 27.5,
"contrastRatio": 1.25,
"colors": [
{
"slug": "persian-red",
"name": "Persian Red",
"hex": "#CC3333",
"rgb": [
204,
51,
51
],
"hsl": [
0,
60,
50
],
"cmyk": [
0,
75,
75,
20
],
"family": "red",
"temperature": "warm",
"tone": [
"balanced"
],
"luminance": 0.1544,
"contrast": {
"black": 4.09,
"white": 5.14
},
"wcag": {
"AA": [
"#FFFFFF",
"#F5F5F5"
],
"AAA": []
},
"bestText": {
"text": "#FFFFFF",
"label": "white text",
"ratio": 5.14
},
"description": "Persian Red is #CC3333, a warm red color with balanced character. Compared with Vermilion, it is darker and less saturated. Use it for historical references, pigment palettes, and cultural color systems, with white text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/persian-red/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/persian-red.json"
},
{
"slug": "vermilion",
"name": "Vermilion",
"hex": "#E34234",
"rgb": [
227,
66,
52
],
"hsl": [
5,
76,
55
],
"cmyk": [
0,
71,
77,
11
],
"family": "red",
"temperature": "warm",
"tone": [
"vibrant"
],
"luminance": 0.2048,
"contrast": {
"black": 5.1,
"white": 4.12
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.1
},
"description": "Vermilion is #E34234, a warm red color with vibrant character. Compared with Persian Red, it is lighter and more 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/vermilion/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/vermilion.json"
}
],
"differences": {
"rgbDistance": 27.5,
"contrastRatio": 1.25,
"hslDelta": {
"hue": 5,
"saturation": 16,
"lightness": 5
},
"luminanceDelta": 0.0504,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [],
"lighterColor": "Vermilion",
"moreSaturatedColor": "Vermilion"
},
"accessibility": {
"pairContrastRatio": 1.25,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Persian Red",
"background": "#CC3333",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 5.14
},
{
"color": "Vermilion",
"background": "#E34234",
"foreground": "#000000",
"label": "black text",
"ratio": 5.1
}
]
},
"useCases": {
"chooseFirstWhen": "Persian Red is better when the design needs balanced red character, warm temperature, and the specific HEX value #CC3333.",
"chooseSecondWhen": "Vermilion is better when the design needs vibrant red character, warm temperature, and the specific HEX value #E34234.",
"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/persian-red-vs-vermilion.json",
"https://www.colorsencyclopedia.com/api/colors/persian-red.json",
"https://www.colorsencyclopedia.com/api/colors/vermilion.json"
],
"url": "https://www.colorsencyclopedia.com/compare/persian-red-vs-vermilion/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/persian-red-vs-vermilion.json"
}