Nearest-color comparison
Fern Frond #657220 vs Olive Drab #6B8E23: RGB distance 28.8 and contrast 1.39:1. Compare hue, luminance, saturation, WCAG and practical use.
Fern Frond and Olive Drab are related but distinguishable, with an RGB distance of 28.8. Olive Drab is lighter by 0.0768, and Olive Drab is more saturated by 4 percentage points. Their mutual contrast is 1.39:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Fern Frond and Olive Drab across RGB distance, luminance, hue, saturation, and contrast.
green color
Fern Frond is #657220, a cool green with hue 70°, saturation 56% and luminance 0.1491. Beside Olive Drab, it is darker and less saturated. Of the two standard text choices, white text gives the higher contrast at 5.27:1.
green color
Olive Drab is #6B8E23, a cool green with hue 80°, saturation 60% and luminance 0.2259. Beside Fern Frond, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 5.52:1.
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 Fern Frond and Olive Drab, 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": "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 Olive Drab, it is darker and less 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"
},
{
"slug": "olive-drab",
"name": "Olive Drab",
"hex": "#6B8E23",
"rgb": [
107,
142,
35
],
"hsl": [
80,
60,
35
],
"cmyk": [
25,
0,
75,
44
],
"family": "green",
"temperature": "cool",
"tone": [
"earth-tone",
"jewel-tone"
],
"luminance": 0.2259,
"contrast": {
"black": 5.52,
"white": 3.81
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.52
},
"description": "Olive Drab is #6B8E23, a cool green color with earth tone and jewel tone character. Compared with Fern Frond, it is lighter and more saturated. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/olive-drab/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/olive-drab.json"
}
]{
"rgbDistance": 28.8,
"contrastRatio": 1.39,
"hslDelta": {
"hue": 10,
"saturation": 4,
"lightness": 6
},
"luminanceDelta": 0.0768,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"earth-tone",
"jewel-tone"
],
"lighterColor": "Olive Drab",
"moreSaturatedColor": "Olive Drab"
}{
"pairContrastRatio": 1.39,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Fern Frond",
"background": "#657220",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 5.27
},
{
"color": "Olive Drab",
"background": "#6B8E23",
"foreground": "#000000",
"label": "black text",
"ratio": 5.52
}
]
}{
"chooseFirstWhen": "Fern Frond is better when the design needs earth tone and jewel tone green character, cool temperature, and the specific HEX value #657220.",
"chooseSecondWhen": "Olive Drab is better when the design needs earth tone and jewel tone green character, cool temperature, and the specific HEX value #6B8E23.",
"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/fern-frond-vs-olive-drab.json",
"https://www.colorsencyclopedia.com/api/colors/fern-frond.json",
"https://www.colorsencyclopedia.com/api/colors/olive-drab.json"
]{
"datasetVersion": "1.0.0",
"slug": "fern-frond-vs-olive-drab",
"type": "nearest",
"name": "Fern Frond vs Olive Drab",
"verdict": "Fern Frond and Olive Drab are visually related colors. Olive Drab is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.39:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Fern Frond and Olive Drab are different green colors with HEX values #657220 and #6B8E23. According to Colors Encyclopedia, their RGB distance is 28.8, their contrast ratio is 1.39:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 28.8,
"contrastRatio": 1.39,
"colors": [
{
"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 Olive Drab, it is darker and less 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"
},
{
"slug": "olive-drab",
"name": "Olive Drab",
"hex": "#6B8E23",
"rgb": [
107,
142,
35
],
"hsl": [
80,
60,
35
],
"cmyk": [
25,
0,
75,
44
],
"family": "green",
"temperature": "cool",
"tone": [
"earth-tone",
"jewel-tone"
],
"luminance": 0.2259,
"contrast": {
"black": 5.52,
"white": 3.81
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A"
],
"AAA": []
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 5.52
},
"description": "Olive Drab is #6B8E23, a cool green color with earth tone and jewel tone character. Compared with Fern Frond, it is lighter and more saturated. Use it for web design, css color systems, and ui prototyping, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/olive-drab/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/olive-drab.json"
}
],
"differences": {
"rgbDistance": 28.8,
"contrastRatio": 1.39,
"hslDelta": {
"hue": 10,
"saturation": 4,
"lightness": 6
},
"luminanceDelta": 0.0768,
"sameFamily": true,
"sameTemperature": true,
"sharedTones": [
"earth-tone",
"jewel-tone"
],
"lighterColor": "Olive Drab",
"moreSaturatedColor": "Olive Drab"
},
"accessibility": {
"pairContrastRatio": 1.39,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Fern Frond",
"background": "#657220",
"foreground": "#FFFFFF",
"label": "white text",
"ratio": 5.27
},
{
"color": "Olive Drab",
"background": "#6B8E23",
"foreground": "#000000",
"label": "black text",
"ratio": 5.52
}
]
},
"useCases": {
"chooseFirstWhen": "Fern Frond is better when the design needs earth tone and jewel tone green character, cool temperature, and the specific HEX value #657220.",
"chooseSecondWhen": "Olive Drab is better when the design needs earth tone and jewel tone green character, cool temperature, and the specific HEX value #6B8E23.",
"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/fern-frond-vs-olive-drab.json",
"https://www.colorsencyclopedia.com/api/colors/fern-frond.json",
"https://www.colorsencyclopedia.com/api/colors/olive-drab.json"
],
"url": "https://www.colorsencyclopedia.com/compare/fern-frond-vs-olive-drab/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/fern-frond-vs-olive-drab.json"
}