Nearest-color comparison
Alexandrite #3D8B74 vs Viridian #40826D: RGB distance 11.8 and contrast 1.11:1. Compare hue, luminance, saturation, WCAG and practical use.
Alexandrite and Viridian are very close, with an RGB distance of 11.8. Alexandrite is lighter by 0.0256, and Alexandrite 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 Alexandrite and Viridian across RGB distance, luminance, hue, saturation, and contrast.
green color
Alexandrite is #3D8B74, a cool green with hue 162°, saturation 39% and luminance 0.2072. Beside Viridian, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 5.14:1.
green color
Viridian is #40826D, a cool green with hue 161°, saturation 34% and luminance 0.1816. Beside Alexandrite, it is darker and less saturated. Of the two standard text choices, black text gives the higher contrast at 4.63:1.
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 Alexandrite and Viridian, 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": "alexandrite",
"name": "Alexandrite",
"hex": "#3D8B74",
"rgb": [
61,
139,
116
],
"hsl": [
162,
39,
39
],
"cmyk": [
56,
0,
17,
45
],
"family": "green",
"temperature": "cool",
"tone": [
"earth-tone"
],
"luminance": 0.2072,
"contrast": {
"black": 5.14,
"white": 4.08
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.14
},
"description": "Alexandrite is #3D8B74, a cool green color with earth tone character. Compared with Viridian, 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/alexandrite/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/alexandrite.json"
},
{
"slug": "viridian",
"name": "Viridian",
"hex": "#40826D",
"rgb": [
64,
130,
109
],
"hsl": [
161,
34,
38
],
"cmyk": [
51,
0,
16,
49
],
"family": "green",
"temperature": "cool",
"tone": [
"earth-tone"
],
"luminance": 0.1816,
"contrast": {
"black": 4.63,
"white": 4.53
},
"wcag": {
"AA": [
"#000000",
"#FFFFFF"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 4.63
},
"description": "Viridian is #40826D, a cool green color with earth tone character. Compared with Alexandrite, it is darker and less saturated. Use it for historical references, pigment palettes, and cultural color systems, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/viridian/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/viridian.json"
}
]{
"rgbDistance": 11.8,
"contrastRatio": 1.11,
"hslDelta": {
"hue": 1,
"saturation": 5,
"lightness": 1
},
"luminanceDelta": 0.0256,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"earth-tone"
],
"lighterColor": "Alexandrite",
"moreSaturatedColor": "Alexandrite"
}{
"pairContrastRatio": 1.11,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Alexandrite",
"background": "#3D8B74",
"foreground": "#000000",
"label": "black text",
"ratio": 5.14
},
{
"color": "Viridian",
"background": "#40826D",
"foreground": "#000000",
"label": "black text",
"ratio": 4.63
}
]
}{
"chooseFirstWhen": "Alexandrite is better when the design needs earth tone green character, cool temperature, and the specific HEX value #3D8B74.",
"chooseSecondWhen": "Viridian is better when the design needs earth tone green character, cool temperature, and the specific HEX value #40826D.",
"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/alexandrite-vs-viridian.json",
"https://www.colorsencyclopedia.com/api/colors/alexandrite.json",
"https://www.colorsencyclopedia.com/api/colors/viridian.json"
]{
"datasetVersion": "1.0.0",
"slug": "alexandrite-vs-viridian",
"type": "nearest",
"name": "Alexandrite vs Viridian",
"verdict": "Alexandrite and Viridian are very close colors. Alexandrite 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": "Alexandrite and Viridian are different green colors with HEX values #3D8B74 and #40826D. According to Colors Encyclopedia, their RGB distance is 11.8, their contrast ratio is 1.11:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 11.8,
"contrastRatio": 1.11,
"colors": [
{
"slug": "alexandrite",
"name": "Alexandrite",
"hex": "#3D8B74",
"rgb": [
61,
139,
116
],
"hsl": [
162,
39,
39
],
"cmyk": [
56,
0,
17,
45
],
"family": "green",
"temperature": "cool",
"tone": [
"earth-tone"
],
"luminance": 0.2072,
"contrast": {
"black": 5.14,
"white": 4.08
},
"wcag": {
"AA": [
"#000000"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.14
},
"description": "Alexandrite is #3D8B74, a cool green color with earth tone character. Compared with Viridian, 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/alexandrite/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/alexandrite.json"
},
{
"slug": "viridian",
"name": "Viridian",
"hex": "#40826D",
"rgb": [
64,
130,
109
],
"hsl": [
161,
34,
38
],
"cmyk": [
51,
0,
16,
49
],
"family": "green",
"temperature": "cool",
"tone": [
"earth-tone"
],
"luminance": 0.1816,
"contrast": {
"black": 4.63,
"white": 4.53
},
"wcag": {
"AA": [
"#000000",
"#FFFFFF"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 4.63
},
"description": "Viridian is #40826D, a cool green color with earth tone character. Compared with Alexandrite, it is darker and less saturated. Use it for historical references, pigment palettes, and cultural color systems, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/viridian/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/viridian.json"
}
],
"differences": {
"rgbDistance": 11.8,
"contrastRatio": 1.11,
"hslDelta": {
"hue": 1,
"saturation": 5,
"lightness": 1
},
"luminanceDelta": 0.0256,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"earth-tone"
],
"lighterColor": "Alexandrite",
"moreSaturatedColor": "Alexandrite"
},
"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": "Alexandrite",
"background": "#3D8B74",
"foreground": "#000000",
"label": "black text",
"ratio": 5.14
},
{
"color": "Viridian",
"background": "#40826D",
"foreground": "#000000",
"label": "black text",
"ratio": 4.63
}
]
},
"useCases": {
"chooseFirstWhen": "Alexandrite is better when the design needs earth tone green character, cool temperature, and the specific HEX value #3D8B74.",
"chooseSecondWhen": "Viridian is better when the design needs earth tone green character, cool temperature, and the specific HEX value #40826D.",
"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/alexandrite-vs-viridian.json",
"https://www.colorsencyclopedia.com/api/colors/alexandrite.json",
"https://www.colorsencyclopedia.com/api/colors/viridian.json"
],
"url": "https://www.colorsencyclopedia.com/compare/alexandrite-vs-viridian/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/alexandrite-vs-viridian.json"
}