Nearest-color comparison

Iris vs Royal Blue

Iris and Royal Blue are different blue colors with HEX values #5A4FCF and #4169E1. According to Colors Encyclopedia, their RGB distance is 40.3, their contrast ratio is 1.25:1, and the comparison helps choose between tone, temperature, and accessibility behavior.

Iris and Royal Blue are visually related colors. Royal Blue 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.

Differences Use cases Accessibility JSON

Iris#5A4FCF

Royal Blue#4169E1

Quick Difference Summary

The main measurable differences between Iris and Royal Blue across RGB distance, luminance, hue, saturation, and contrast.

RGB distance40.3

Pair contrast1.25:1

Luminance delta0.0439

Hue delta20 deg

Lighter colorRoyal Blue

More saturatedRoyal Blue

Side-by-Side Color Profiles

blue color

Iris

Iris is #5A4FCF, a cool blue color with balanced character. Compared with Royal Blue, it is darker and less saturated. Use it for beauty branding, creative systems, and premium accents, with white text as the safer foreground option.

HEX#5A4FCF RGB90, 79, 207 HSL245, 57, 56 CMYK57, 62, 0, 19 Luminance0.1227 Best textwhite text

Color page WCAG HEX atlas

blue color

Royal Blue

Royal Blue is #4169E1, a cool blue color with vibrant character. Compared with Iris, it is lighter and more saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.

HEX#4169E1 RGB65, 105, 225 HSL225, 73, 57 CMYK71, 53, 0, 12 Luminance0.1666 Best textwhite text

Color page WCAG HEX atlas

When to Use Iris or Royal Blue

Choose IrisIris is better when the design needs balanced blue character, cool temperature, and the specific HEX value #5A4FCF.

Choose Royal BlueRoyal Blue is better when the design needs vibrant blue character, cool temperature, and the specific HEX value #4169E1.

Use togetherUse these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs.

Technical Comparison Table

PropertyIrisRoyal Blue

HEX#5A4FCF#4169E1

RGB90, 79, 20765, 105, 225

HSL245, 57, 56225, 73, 57

CMYK57, 62, 0, 1971, 53, 0, 12

FamilyBlueBlue

TemperatureCoolCool

ToneBalancedVibrant

Luminance0.12270.1666

Black contrast3.45:14.33:1

White contrast6.08:14.85:1

Shared tonesNone

Accessibility and Contrast

Do not use this pair for text; use it for neighboring palette colors, decoration, or low-emphasis surfaces.

Iriswhite text - 6.08:1

Royal Bluewhite text - 4.85:1

Related Palette Strip

A compact visual strip showing the two compared colors with nearby harmony and variant context.

Iris#5A4FCF

Royal Blue#4169E1

#9D97E2#9D97E2

#91A8EE#91A8EE

#C4CF4F#C4CF4F

#E1B941#E1B941

colorsBoth named color records with HEX, RGB, HSL, CMYK, luminance, WCAG, and links

differencesRGB distance, HSL deltas, luminance delta, contrast, and shared attributes

accessibilityPair contrast and safer text choices for each color

useCasesWhen to choose each color and when to use them together

relatedApiMachine-readable comparison and color endpoints

Structured sections

Colors

[
  {
    "slug": "iris",
    "name": "Iris",
    "hex": "#5A4FCF",
    "rgb": [
      90,
      79,
      207
    ],
    "hsl": [
      245,
      57,
      56
    ],
    "cmyk": [
      57,
      62,
      0,
      19
    ],
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "balanced"
    ],
    "luminance": 0.1227,
    "contrast": {
      "black": 3.45,
      "white": 6.08
    },
    "wcag": {
      "AA": [
        "#FFFFFF",
        "#F5F5F5"
      ],
      "AAA": []
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 6.08
    },
    "description": "Iris is #5A4FCF, a cool blue color with balanced character. Compared with Royal Blue, it is darker and less saturated. Use it for beauty branding, creative systems, and premium accents, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/iris/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/iris.json"
  },
  {
    "slug": "royal-blue",
    "name": "Royal Blue",
    "hex": "#4169E1",
    "rgb": [
      65,
      105,
      225
    ],
    "hsl": [
      225,
      73,
      57
    ],
    "cmyk": [
      71,
      53,
      0,
      12
    ],
    "family": "blue",
    "temperature": "cool",
    "tone": [
      "vibrant"
    ],
    "luminance": 0.1666,
    "contrast": {
      "black": 4.33,
      "white": 4.85
    },
    "wcag": {
      "AA": [
        "#FFFFFF"
      ],
      "AAA": []
    },
    "bestText": {
      "text": "#FFFFFF",
      "label": "white text",
      "ratio": 4.85
    },
    "description": "Royal Blue is #4169E1, a cool blue color with vibrant character. Compared with Iris, it is lighter and more saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
    "url": "https://www.colorsencyclopedia.com/colors/royal-blue/",
    "apiUrl": "https://www.colorsencyclopedia.com/api/colors/royal-blue.json"
  }
]

Differences

{
  "rgbDistance": 40.3,
  "contrastRatio": 1.25,
  "hslDelta": {
    "hue": 20,
    "saturation": 16,
    "lightness": 1
  },
  "luminanceDelta": 0.0439,
  "sameFamily": true,
  "sameTemperature": true,
  "sharedTones": [],
  "lighterColor": "Royal Blue",
  "moreSaturatedColor": "Royal Blue"
}

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": "Iris",
      "background": "#5A4FCF",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 6.08
    },
    {
      "color": "Royal Blue",
      "background": "#4169E1",
      "foreground": "#FFFFFF",
      "label": "white text",
      "ratio": 4.85
    }
  ]
}

Use cases

{
  "chooseFirstWhen": "Iris is better when the design needs balanced blue character, cool temperature, and the specific HEX value #5A4FCF.",
  "chooseSecondWhen": "Royal Blue is better when the design needs vibrant blue character, cool temperature, and the specific HEX value #4169E1.",
  "useTogetherWhen": "Use these colors together as related palette neighbors, subtle material differences, or tonal alternatives rather than readable foreground/background pairs."
}

Related API

[
  "https://www.colorsencyclopedia.com/api/compare/iris-vs-royal-blue.json",
  "https://www.colorsencyclopedia.com/api/colors/iris.json",
  "https://www.colorsencyclopedia.com/api/colors/royal-blue.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "iris-vs-royal-blue",
  "type": "nearest",
  "name": "Iris vs Royal Blue",
  "verdict": "Iris and Royal Blue are visually related colors. Royal Blue 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": "Iris and Royal Blue are different blue colors with HEX values #5A4FCF and #4169E1. According to Colors Encyclopedia, their RGB distance is 40.3, their contrast ratio is 1.25:1, and the comparison helps choose between tone, temperature, and accessibility behavior.",
  "rgbDistance": 40.3,
  "contrastRatio": 1.25,
  "colors": [
    {
      "slug": "iris",
      "name": "Iris",
      "hex": "#5A4FCF",
      "rgb": [
        90,
        79,
        207
      ],
      "hsl": [
        245,
        57,
        56
      ],
      "cmyk": [
        57,
        62,
        0,
        19
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "balanced"
      ],
      "luminance": 0.1227,
      "contrast": {
        "black": 3.45,
        "white": 6.08
      },
      "wcag": {
        "AA": [
          "#FFFFFF",
          "#F5F5F5"
        ],
        "AAA": []
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 6.08
      },
      "description": "Iris is #5A4FCF, a cool blue color with balanced character. Compared with Royal Blue, it is darker and less saturated. Use it for beauty branding, creative systems, and premium accents, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/iris/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/iris.json"
    },
    {
      "slug": "royal-blue",
      "name": "Royal Blue",
      "hex": "#4169E1",
      "rgb": [
        65,
        105,
        225
      ],
      "hsl": [
        225,
        73,
        57
      ],
      "cmyk": [
        71,
        53,
        0,
        12
      ],
      "family": "blue",
      "temperature": "cool",
      "tone": [
        "vibrant"
      ],
      "luminance": 0.1666,
      "contrast": {
        "black": 4.33,
        "white": 4.85
      },
      "wcag": {
        "AA": [
          "#FFFFFF"
        ],
        "AAA": []
      },
      "bestText": {
        "text": "#FFFFFF",
        "label": "white text",
        "ratio": 4.85
      },
      "description": "Royal Blue is #4169E1, a cool blue color with vibrant character. Compared with Iris, it is lighter and more saturated. Use it for web design, css color systems, and ui prototyping, with white text as the safer foreground option.",
      "url": "https://www.colorsencyclopedia.com/colors/royal-blue/",
      "apiUrl": "https://www.colorsencyclopedia.com/api/colors/royal-blue.json"
    }
  ],
  "differences": {
    "rgbDistance": 40.3,
    "contrastRatio": 1.25,
    "hslDelta": {
      "hue": 20,
      "saturation": 16,
      "lightness": 1
    },
    "luminanceDelta": 0.0439,
    "sameFamily": true,
    "sameTemperature": true,
    "sharedTones": [],
    "lighterColor": "Royal Blue",
    "moreSaturatedColor": "Royal Blue"
  },
  "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": "Iris",
        "background": "#5A4FCF",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 6.08
      },
      {
        "color": "Royal Blue",
        "background": "#4169E1",
        "foreground": "#FFFFFF",
        "label": "white text",
        "ratio": 4.85
      }
    ]
  },
  "useCases": {
    "chooseFirstWhen": "Iris is better when the design needs balanced blue character, cool temperature, and the specific HEX value #5A4FCF.",
    "chooseSecondWhen": "Royal Blue is better when the design needs vibrant blue character, cool temperature, and the specific HEX value #4169E1.",
    "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/iris-vs-royal-blue.json",
    "https://www.colorsencyclopedia.com/api/colors/iris.json",
    "https://www.colorsencyclopedia.com/api/colors/royal-blue.json"
  ],
  "url": "https://www.colorsencyclopedia.com/compare/iris-vs-royal-blue/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/compare/iris-vs-royal-blue.json"
}