Colors Encyclopedia

Named color

Fluorescent Orange

Fluorescent Orange color #FFBF00: RGB 255, 191, 0 and HSL 45°, 100%, 50%. Explore its warm yellow profile, contrast, CSS, palettes and harmonies.

#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

Use this color

Create with Fluorescent Orange

Open a professional color tool with #FFBF00 already applied. Each configuration stays canonical to the tool and can be adjusted or shared.

All color tools
Generate palette & CSS variablesCreate 50–950 tokens and export CSS, SCSS, JSON, or Tailwind.Open configured tool →Open in Gradient StudioStart with Fluorescent Orange and its complementary color.Open configured tool →Mix this colorBlend it with a complementary color and copy color-mix() CSS.Open configured tool →Check contrastOpen the strongest black or white background pairing.Open configured tool →Accessible combinationsReview AA and AAA text options, alternatives, warnings, and UI guidance.Open configured tool →Create glass surfaceUse this color as the tint for a translucent UI panel.Open configured tool →

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

Color meaning and use

About Fluorescent Orange Color

Fluorescent Orange uses HEX #FFBF00, RGB 255, 191, 0, and HSL 45°, 100%, 50%. The dataset classifies it in the yellow family with warm temperature and vibrant visual character.

No separate named-color neighbor is recorded for this entry. Its relative luminance is 0.5852; black contrast is 12.7:1 and white contrast is 1.65:1, making black the stronger of those two standard foreground choices.

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

Downloadable color reference infographic

Fluorescent Orange Color Reference Infographic

Save a high-resolution infographic of Fluorescent Orange, including its color values, coordinated palette, and black and white text contrast.

1200 × 800
Fluorescent Orange color reference infographic showing #FFBF00, RGB and HSL values, a coordinated palette, and black and white text contrast.
Fluorescent Orange color reference infographic generated from the verified Colors Encyclopedia dataset.
Download WebPDownload SVGOpen full size

Color Harmonies

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

Variants

#FFD65C#FFD65C#A37A00#A37A00Fluorescent Orange#FFBF00#E3B11C#E3B11C#F5DA89#F5DA89#FFC929#FFC929

Pairings

Black#000000#0040FF#0040FF#FF4000#FF4000#BFFF00#BFFF00Matte Black#1A1A1AWhite Smoke#F5F5F5

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",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "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",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  }
}
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",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "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",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  },
  "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

Similar Colors

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

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.