Colors Encyclopedia

Named color

International Orange

International Orange is a vibrant orange color with HEX #FF4F00. According to Colors Encyclopedia, it has RGB 255, 79, 0, HSL 19, 100%, 50%, warm temperature, and is useful for historical references, pigment palettes, and cultural color systems.

#FF4F00 orange warm vibrant
HEX #FF4F00
RGB rgb(255, 79, 0)
HSL hsl(19 100% 50%)
CMYK cmyk(0, 69, 100, 0)
Luminance 0.2685
Contrast Black 6.37:1White 3.3:1

CSS Utilities

--color-international-orange: #FF4F00;
.bg-international-orange { background-color: #FF4F00; }
.text-international-orange { color: #FF4F00; }
Open CSS utility pageReusable variables, classes, examples, and implementation notes

Machine-readable data

Machine-Readable Color Data (JSON)

Perfect for CSS, design systems, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.2685
Black text6.37:1AA Pass
White text3.3:1AA Fail
hexCanonical HEX value
rgbRed, green, blue channels
hslHue, saturation, lightness
cmykApproximate print conversion
wcagAA and AAA contrast options
harmoniesMathematical harmony sets
variantsGenerated tone variants
nearestColorsKnowledge graph neighbors
Download JSON Open API
Structured sections
Color systems
{
  "hex": "#FF4F00",
  "rgb": [
    255,
    79,
    0
  ],
  "hsl": [
    19,
    100,
    50
  ],
  "cmyk": [
    0,
    69,
    100,
    0
  ],
  "luminance": 0.2685,
  "contrast": {
    "black": 6.37,
    "white": 3.3
  }
}
WCAG
{
  "AA": [
    "#000000",
    "#1A1A1A"
  ],
  "AAA": []
}
Harmonies
{
  "complementary": "#00AEFF",
  "analogous": [
    "#FF002F",
    "#FFD000"
  ],
  "triadic": [
    "#00FF51",
    "#5100FF"
  ],
  "tetradic": [
    "#2FFF00",
    "#00AEFF",
    "#D000FF"
  ],
  "splitComplementary": [
    "#00FFD0",
    "#002FFF"
  ],
  "monochromatic": [
    "#FF8F5C",
    "#FF4F00",
    "#A33400"
  ]
}
Variants
{
  "light": "#FF8F5C",
  "dark": "#A33400",
  "saturated": "#FF5100",
  "desaturated": "#E35B1C",
  "pastel": "#F5AB89",
  "neon": "#FF6D29"
}
Pairings
{
  "best": [
    "#000000",
    "#00AEFF",
    "#FF002F",
    "#FFD000"
  ],
  "avoid": [
    "#E35B1C",
    "#FF8F5C"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#FF8F5C",
    "#E35B1C"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "orange-red",
    "hazard-orange",
    "neon-orange",
    "fire-opal",
    "safety-orange"
  ],
  "generatedPalettes": [
    "international-orange"
  ],
  "generatedComparisons": [
    "international-orange-vs-hazard-orange",
    "international-orange-vs-orange-red"
  ],
  "relatedFamilies": [
    "/colors/by-family/orange",
    "/colors/by-temperature/warm",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/international-orange",
    "/wcag/international-orange",
    "/css/colors/international-orange",
    "/hex/ff4f00"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/orange",
      "/colors/by-temperature/warm",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/international-orange"
    ],
    "related": [
      "/colors/orange-red",
      "/colors/hazard-orange",
      "/colors/neon-orange",
      "/colors/fire-opal",
      "/colors/safety-orange",
      "/compare/international-orange-vs-hazard-orange",
      "/compare/international-orange-vs-orange-red",
      "/harmonies/international-orange",
      "/wcag/international-orange",
      "/css/colors/international-orange",
      "/hex/ff4f00"
    ]
  }
}
Full JSON dataset 
{
  "slug": "international-orange",
  "name": "International Orange",
  "hex": "#FF4F00",
  "uses": [
    "historical references",
    "pigment palettes",
    "cultural color systems"
  ],
  "psychology": {
    "associations": [
      "heritage",
      "craft",
      "specificity"
    ],
    "contexts": [
      "museum design",
      "education",
      "editorial research",
      "cultural references"
    ],
    "avoidIn": [
      "generic unlabeled palette systems"
    ]
  },
  "aliases": [],
  "sourceType": "curated",
  "confidence": "medium",
  "reviewStatus": "manual",
  "sourceUrl": "https://www.colorsencyclopedia.com/assets/colors.json",
  "origin": {
    "type": "common",
    "notes": "Curated common color reference used in design, material, cultural, and editorial color systems."
  },
  "family": "orange",
  "temperature": "warm",
  "tone": [
    "vibrant"
  ],
  "editorialNotes": "Curated internal color record with computed technical properties.",
  "tags": [
    "orange",
    "warm",
    "vibrant",
    "historical-references",
    "pigment-palettes",
    "cultural-color-systems",
    "heritage",
    "craft",
    "specificity"
  ],
  "popularity": 84,
  "rgb": [
    255,
    79,
    0
  ],
  "hsl": [
    19,
    100,
    50
  ],
  "cmyk": [
    0,
    69,
    100,
    0
  ],
  "luminance": 0.2685,
  "contrast": {
    "black": 6.37,
    "white": 3.3
  },
  "harmonies": {
    "complementary": "#00AEFF",
    "analogous": [
      "#FF002F",
      "#FFD000"
    ],
    "triadic": [
      "#00FF51",
      "#5100FF"
    ],
    "tetradic": [
      "#2FFF00",
      "#00AEFF",
      "#D000FF"
    ],
    "splitComplementary": [
      "#00FFD0",
      "#002FFF"
    ],
    "monochromatic": [
      "#FF8F5C",
      "#FF4F00",
      "#A33400"
    ]
  },
  "variants": {
    "light": "#FF8F5C",
    "dark": "#A33400",
    "saturated": "#FF5100",
    "desaturated": "#E35B1C",
    "pastel": "#F5AB89",
    "neon": "#FF6D29"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A"
    ],
    "AAA": []
  },
  "css": {
    "variable": "--color-international-orange: #FF4F00;",
    "utility": ".bg-international-orange { background-color: #FF4F00; }",
    "textUtility": ".text-international-orange { color: #FF4F00; }"
  },
  "nearestColors": [
    "orange-red",
    "hazard-orange",
    "neon-orange",
    "fire-opal",
    "safety-orange"
  ],
  "generatedPalettes": [
    "international-orange"
  ],
  "generatedComparisons": [
    "international-orange-vs-hazard-orange",
    "international-orange-vs-orange-red"
  ],
  "relatedFamilies": [
    "/colors/by-family/orange",
    "/colors/by-temperature/warm",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/international-orange",
    "/wcag/international-orange",
    "/css/colors/international-orange",
    "/hex/ff4f00"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/orange",
      "/colors/by-temperature/warm",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/international-orange"
    ],
    "related": [
      "/colors/orange-red",
      "/colors/hazard-orange",
      "/colors/neon-orange",
      "/colors/fire-opal",
      "/colors/safety-orange",
      "/compare/international-orange-vs-hazard-orange",
      "/compare/international-orange-vs-orange-red",
      "/harmonies/international-orange",
      "/wcag/international-orange",
      "/css/colors/international-orange",
      "/hex/ff4f00"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#00AEFF",
      "#FF002F",
      "#FFD000"
    ],
    "avoid": [
      "#E35B1C",
      "#FF8F5C"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#FF8F5C",
      "#E35B1C"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About International Orange Color

International Orange sits in the orange family with warm temperature and vibrant visual character. International Orange is a commonly used color name in design references, palettes, and editorial color systems.

Its common associations include heritage, craft, and specificity, which makes it relevant for museum design and education. In design work, International Orange is most useful for historical references, pigment palettes, and cultural color systems, especially when paired with black text for stronger contrast.

Related Color Guides

Orange color familyBrowse named orange colors and compare nearby swatches.Warm colorsExplore colors with warm temperature behavior.Vibrant colorsFind colors with vibrant visual character.International Orange accessibilityCheck contrast and WCAG text options for #FF4F00.International Orange CSS utilitiesUse International Orange in CSS variables and utility classes.#FF4F00 HEX atlasOpen the permanent HEX atlas record for conversions and variants.International Orange paletteOpen the generated palette based on International Orange.International Orange harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for International Orange against black and white text.

Black text6.37:1AA Pass
White text3.3:1AA Fail
AA text options#000000, #1A1A1A
AAA text optionsNone in seed set
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Orange Red#FF4500
Hazard Orange#FF6700
Neon Orange#FF5F1F
Fire Opal#E95C20
Safety Orange#FF7900

Color Harmonies

#00AEFF#00AEFF
#FF002F#FF002F
#FFD000#FFD000
#00FF51#00FF51
#5100FF#5100FF
Open full International Orange harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#FF8F5C#FF8F5C
#A33400#A33400
#FF5100#FF5100
#E35B1C#E35B1C
#F5AB89#F5AB89
#FF6D29#FF6D29

Pairings

Black#000000
#00AEFF#00AEFF
#FF002F#FF002F
#FFD000#FFD000
Matte Black#1A1A1A
White Smoke#F5F5F5