cyan color
Moonstone
Moonstone is #D9E6E8, a cool cyan with hue 188°, saturation 25% and luminance 0.7717. Beside Fog, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 16.43:1.
Nearest-color comparison
Moonstone #D9E6E8 vs Fog #D7DDE0: RGB distance 12.2 and contrast 1.07:1. Compare hue, luminance, saturation, WCAG and practical use.
Moonstone and Fog are very close, with an RGB distance of 12.2. Moonstone is lighter by 0.0563, and Moonstone is more saturated by 12 percentage points. Their mutual contrast is 1.07:1. The pair is too close for a readable foreground/background combination and works better as neighboring palette colors.
The main measurable differences between Moonstone and Fog across RGB distance, luminance, hue, saturation, and contrast.
cyan color
Moonstone is #D9E6E8, a cool cyan with hue 188°, saturation 25% and luminance 0.7717. Beside Fog, it is lighter and more saturated. Of the two standard text choices, black text gives the higher contrast at 16.43:1.
blue color
Fog is #D7DDE0, a cool blue with hue 200°, saturation 13% and luminance 0.7154. Beside Moonstone, it is darker and less saturated. Of the two standard text choices, black text gives the higher contrast at 15.31:1.
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 Moonstone and Fog, including color systems, RGB distance, HSL deltas, contrast, accessibility guidance, use cases, and API links.
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": "moonstone",
"name": "Moonstone",
"hex": "#D9E6E8",
"rgb": [
217,
230,
232
],
"hsl": [
188,
25,
88
],
"cmyk": [
6,
1,
0,
9
],
"family": "cyan",
"temperature": "cool",
"tone": [
"light"
],
"luminance": 0.7717,
"contrast": {
"black": 16.43,
"white": 1.28
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A",
"#36454F"
],
"AAA": [
"#000000",
"#1A1A1A",
"#36454F"
]
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 16.43
},
"description": "Moonstone is #D9E6E8, a cool cyan color with light character. Compared with Fog, 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/moonstone/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/moonstone.json"
},
{
"slug": "fog",
"name": "Fog",
"hex": "#D7DDE0",
"rgb": [
215,
221,
224
],
"hsl": [
200,
13,
86
],
"cmyk": [
4,
1,
0,
12
],
"family": "blue",
"temperature": "cool",
"tone": [
"light"
],
"luminance": 0.7154,
"contrast": {
"black": 15.31,
"white": 1.37
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A",
"#36454F"
],
"AAA": [
"#000000",
"#1A1A1A",
"#36454F"
]
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 15.31
},
"description": "Fog is #D7DDE0, a cool blue color with light character. Compared with Moonstone, it is darker and less saturated. Use it for backgrounds, typography, and product surfaces, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/fog/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/fog.json"
}
]{
"rgbDistance": 12.2,
"contrastRatio": 1.07,
"hslDelta": {
"hue": 12,
"saturation": 12,
"lightness": 2
},
"luminanceDelta": 0.0563,
"sameFamily": false,
"sameTemperature": true,
"sharedTones": [
"light"
],
"lighterColor": "Moonstone",
"moreSaturatedColor": "Moonstone"
}{
"pairContrastRatio": 1.07,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Moonstone",
"background": "#D9E6E8",
"foreground": "#000000",
"label": "black text",
"ratio": 16.43
},
{
"color": "Fog",
"background": "#D7DDE0",
"foreground": "#000000",
"label": "black text",
"ratio": 15.31
}
]
}{
"chooseFirstWhen": "Moonstone is better when the design needs light cyan character, cool temperature, and the specific HEX value #D9E6E8.",
"chooseSecondWhen": "Fog is better when the design needs light blue character, cool temperature, and the specific HEX value #D7DDE0.",
"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/moonstone-vs-fog.json",
"https://www.colorsencyclopedia.com/api/colors/moonstone.json",
"https://www.colorsencyclopedia.com/api/colors/fog.json"
]{
"datasetVersion": "1.0.0",
"slug": "moonstone-vs-fog",
"type": "nearest",
"name": "Moonstone vs Fog",
"verdict": "Moonstone and Fog are very close colors. Moonstone is the lighter option. They share similar temperature behavior. Their mutual contrast is 1.07:1, so the pair is too low for text and better treated as a palette relationship.",
"summary": "Moonstone and Fog are different cyan and blue colors with HEX values #D9E6E8 and #D7DDE0. According to Colors Encyclopedia, their RGB distance is 12.2, their contrast ratio is 1.07:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
"rgbDistance": 12.2,
"contrastRatio": 1.07,
"colors": [
{
"slug": "moonstone",
"name": "Moonstone",
"hex": "#D9E6E8",
"rgb": [
217,
230,
232
],
"hsl": [
188,
25,
88
],
"cmyk": [
6,
1,
0,
9
],
"family": "cyan",
"temperature": "cool",
"tone": [
"light"
],
"luminance": 0.7717,
"contrast": {
"black": 16.43,
"white": 1.28
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A",
"#36454F"
],
"AAA": [
"#000000",
"#1A1A1A",
"#36454F"
]
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 16.43
},
"description": "Moonstone is #D9E6E8, a cool cyan color with light character. Compared with Fog, 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/moonstone/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/moonstone.json"
},
{
"slug": "fog",
"name": "Fog",
"hex": "#D7DDE0",
"rgb": [
215,
221,
224
],
"hsl": [
200,
13,
86
],
"cmyk": [
4,
1,
0,
12
],
"family": "blue",
"temperature": "cool",
"tone": [
"light"
],
"luminance": 0.7154,
"contrast": {
"black": 15.31,
"white": 1.37
},
"wcag": {
"AA": [
"#000000",
"#1A1A1A",
"#36454F"
],
"AAA": [
"#000000",
"#1A1A1A",
"#36454F"
]
},
"bestText": {
"text": "#000000",
"label": "black text",
"ratio": 15.31
},
"description": "Fog is #D7DDE0, a cool blue color with light character. Compared with Moonstone, it is darker and less saturated. Use it for backgrounds, typography, and product surfaces, with black text as the safer foreground option.",
"url": "https://www.colorsencyclopedia.com/colors/fog/",
"apiUrl": "https://www.colorsencyclopedia.com/api/colors/fog.json"
}
],
"differences": {
"rgbDistance": 12.2,
"contrastRatio": 1.07,
"hslDelta": {
"hue": 12,
"saturation": 12,
"lightness": 2
},
"luminanceDelta": 0.0563,
"sameFamily": false,
"sameTemperature": true,
"sharedTones": [
"light"
],
"lighterColor": "Moonstone",
"moreSaturatedColor": "Moonstone"
},
"accessibility": {
"pairContrastRatio": 1.07,
"textRecommendation": "Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.",
"safeText": [
{
"color": "Moonstone",
"background": "#D9E6E8",
"foreground": "#000000",
"label": "black text",
"ratio": 16.43
},
{
"color": "Fog",
"background": "#D7DDE0",
"foreground": "#000000",
"label": "black text",
"ratio": 15.31
}
]
},
"useCases": {
"chooseFirstWhen": "Moonstone is better when the design needs light cyan character, cool temperature, and the specific HEX value #D9E6E8.",
"chooseSecondWhen": "Fog is better when the design needs light blue character, cool temperature, and the specific HEX value #D7DDE0.",
"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/moonstone-vs-fog.json",
"https://www.colorsencyclopedia.com/api/colors/moonstone.json",
"https://www.colorsencyclopedia.com/api/colors/fog.json"
],
"url": "https://www.colorsencyclopedia.com/compare/moonstone-vs-fog/",
"apiUrl": "https://www.colorsencyclopedia.com/api/compare/moonstone-vs-fog.json"
}