Colors Encyclopedia

Named color

Fluorescent Orange

Fluorescent Orange is a vibrant yellow color with HEX #FFBF00. According to Colors Encyclopedia, it has RGB 255, 191, 0, HSL 45, 100%, 50%, warm temperature, and is useful for neon accents, event graphics, and high energy digital design.

#FFBF00 yellow warm vibrant
HEX #FFBF00
RGB rgb(255, 191, 0)
HSL hsl(45 100% 50%)
CMYK cmyk(0, 25, 100, 0)
Luminance 0.5852
Contrast Black 12.7:1White 1.65:1

CSS Utilities

--color-fluorescent-orange: #FFBF00;
.bg-fluorescent-orange { background-color: #FFBF00; }
.text-fluorescent-orange { color: #FFBF00; }
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
Luminance0.5852
Black text12.7:1AA Pass
White text1.65:1AA 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": "#FFBF00",
  "rgb": [
    255,
    191,
    0
  ],
  "hsl": [
    45,
    100,
    50
  ],
  "cmyk": [
    0,
    25,
    100,
    0
  ],
  "luminance": 0.5852,
  "contrast": {
    "black": 12.7,
    "white": 1.65
  }
}
WCAG
{
  "AA": [
    "#000000",
    "#1A1A1A",
    "#36454F"
  ],
  "AAA": [
    "#000000",
    "#1A1A1A"
  ]
}
Harmonies
{
  "complementary": "#0040FF",
  "analogous": [
    "#FF4000",
    "#BFFF00"
  ],
  "triadic": [
    "#00FFBF",
    "#BF00FF"
  ],
  "tetradic": [
    "#00FF40",
    "#0040FF",
    "#FF00BF"
  ],
  "splitComplementary": [
    "#00BFFF",
    "#4000FF"
  ],
  "monochromatic": [
    "#FFD65C",
    "#FFBF00",
    "#A37A00"
  ]
}
Variants
{
  "light": "#FFD65C",
  "dark": "#A37A00",
  "saturated": "#FFBF00",
  "desaturated": "#E3B11C",
  "pastel": "#F5DA89",
  "neon": "#FFC929"
}
Pairings
{
  "best": [
    "#000000",
    "#0040FF",
    "#FF4000",
    "#BFFF00"
  ],
  "avoid": [
    "#E3B11C",
    "#FFD65C"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#FFD65C",
    "#E3B11C"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "amber",
    "honey",
    "industrial-yellow",
    "caution-yellow",
    "sunflower"
  ],
  "generatedPalettes": [
    "fluorescent-orange"
  ],
  "generatedComparisons": [
    "amber-vs-fluorescent-orange",
    "fluorescent-orange-vs-honey",
    "industrial-yellow-vs-fluorescent-orange"
  ],
  "relatedFamilies": [
    "/colors/by-family/yellow",
    "/colors/by-temperature/warm",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/fluorescent-orange",
    "/wcag/fluorescent-orange",
    "/css/colors/fluorescent-orange",
    "/hex/ffbf00"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/yellow",
      "/colors/by-temperature/warm",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/fluorescent-orange"
    ],
    "related": [
      "/colors/amber",
      "/colors/honey",
      "/colors/industrial-yellow",
      "/colors/caution-yellow",
      "/colors/sunflower",
      "/compare/amber-vs-fluorescent-orange",
      "/compare/fluorescent-orange-vs-honey",
      "/compare/industrial-yellow-vs-fluorescent-orange",
      "/harmonies/fluorescent-orange",
      "/wcag/fluorescent-orange",
      "/css/colors/fluorescent-orange",
      "/hex/ffbf00"
    ]
  }
}
Full JSON dataset 
{
  "slug": "fluorescent-orange",
  "name": "Fluorescent Orange",
  "hex": "#FFBF00",
  "uses": [
    "neon accents",
    "event graphics",
    "high-energy digital design"
  ],
  "psychology": {
    "associations": [
      "energy",
      "visibility",
      "motion"
    ],
    "contexts": [
      "gaming",
      "music events",
      "sportswear",
      "nightlife"
    ],
    "avoidIn": [
      "long reading interfaces"
    ]
  },
  "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": "yellow",
  "temperature": "warm",
  "tone": [
    "vibrant"
  ],
  "editorialNotes": "Curated internal color record with computed technical properties.",
  "tags": [
    "yellow",
    "warm",
    "vibrant",
    "neon-accents",
    "event-graphics",
    "high-energy-digital-design",
    "energy",
    "visibility",
    "motion"
  ],
  "popularity": 84,
  "rgb": [
    255,
    191,
    0
  ],
  "hsl": [
    45,
    100,
    50
  ],
  "cmyk": [
    0,
    25,
    100,
    0
  ],
  "luminance": 0.5852,
  "contrast": {
    "black": 12.7,
    "white": 1.65
  },
  "harmonies": {
    "complementary": "#0040FF",
    "analogous": [
      "#FF4000",
      "#BFFF00"
    ],
    "triadic": [
      "#00FFBF",
      "#BF00FF"
    ],
    "tetradic": [
      "#00FF40",
      "#0040FF",
      "#FF00BF"
    ],
    "splitComplementary": [
      "#00BFFF",
      "#4000FF"
    ],
    "monochromatic": [
      "#FFD65C",
      "#FFBF00",
      "#A37A00"
    ]
  },
  "variants": {
    "light": "#FFD65C",
    "dark": "#A37A00",
    "saturated": "#FFBF00",
    "desaturated": "#E3B11C",
    "pastel": "#F5DA89",
    "neon": "#FFC929"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "AAA": [
      "#000000",
      "#1A1A1A"
    ]
  },
  "css": {
    "variable": "--color-fluorescent-orange: #FFBF00;",
    "utility": ".bg-fluorescent-orange { background-color: #FFBF00; }",
    "textUtility": ".text-fluorescent-orange { color: #FFBF00; }"
  },
  "nearestColors": [
    "amber",
    "honey",
    "industrial-yellow",
    "caution-yellow",
    "sunflower"
  ],
  "generatedPalettes": [
    "fluorescent-orange"
  ],
  "generatedComparisons": [
    "amber-vs-fluorescent-orange",
    "fluorescent-orange-vs-honey",
    "industrial-yellow-vs-fluorescent-orange"
  ],
  "relatedFamilies": [
    "/colors/by-family/yellow",
    "/colors/by-temperature/warm",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/fluorescent-orange",
    "/wcag/fluorescent-orange",
    "/css/colors/fluorescent-orange",
    "/hex/ffbf00"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/yellow",
      "/colors/by-temperature/warm",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/fluorescent-orange"
    ],
    "related": [
      "/colors/amber",
      "/colors/honey",
      "/colors/industrial-yellow",
      "/colors/caution-yellow",
      "/colors/sunflower",
      "/compare/amber-vs-fluorescent-orange",
      "/compare/fluorescent-orange-vs-honey",
      "/compare/industrial-yellow-vs-fluorescent-orange",
      "/harmonies/fluorescent-orange",
      "/wcag/fluorescent-orange",
      "/css/colors/fluorescent-orange",
      "/hex/ffbf00"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#0040FF",
      "#FF4000",
      "#BFFF00"
    ],
    "avoid": [
      "#E3B11C",
      "#FFD65C"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#FFD65C",
      "#E3B11C"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Fluorescent Orange Color

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

Its common associations include energy, visibility, and motion, which makes it relevant for gaming and music events. In design work, Fluorescent Orange is most useful for neon accents, event graphics, and high-energy digital design, especially when paired with black text for stronger contrast.

Related Color Guides

Yellow color familyBrowse named yellow colors and compare nearby swatches.Warm colorsExplore colors with warm temperature behavior.Vibrant colorsFind colors with vibrant visual character.Fluorescent Orange accessibilityCheck contrast and WCAG text options for #FFBF00.Fluorescent Orange CSS utilitiesUse Fluorescent Orange in CSS variables and utility classes.#FFBF00 HEX atlasOpen the permanent HEX atlas record for conversions and variants.Fluorescent Orange paletteOpen the generated palette based on Fluorescent Orange.Fluorescent Orange harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Fluorescent Orange against black and white text.

Black text12.7:1AA Pass
White text1.65:1AA Fail
AA text options#000000, #1A1A1A, #36454F
AAA text options#000000, #1A1A1A
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Amber#FFBF00
Honey#FFC30B
Industrial Yellow#F3C300
Caution Yellow#FFCC00
Sunflower#FFC512

Color Harmonies

#0040FF#0040FF
#FF4000#FF4000
#BFFF00#BFFF00
#00FFBF#00FFBF
Electric Purple#BF00FF
Open full Fluorescent Orange harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#FFD65C#FFD65C
#A37A00#A37A00
Fluorescent Orange#FFBF00
#E3B11C#E3B11C
#F5DA89#F5DA89
#FFC929#FFC929

Pairings

Black#000000
#0040FF#0040FF
#FF4000#FF4000
#BFFF00#BFFF00
Matte Black#1A1A1A
White Smoke#F5F5F5