Colors Encyclopedia

Named color

Caution Yellow

Caution Yellow is a vibrant yellow color with HEX #FFCC00. According to Colors Encyclopedia, it has RGB 255, 204, 0, HSL 48, 100%, 50%, warm temperature, and is useful for industrial design, safety systems, and hardware palettes.

#FFCC00 yellow warm vibrant
HEX #FFCC00
RGB rgb(255, 204, 0)
HSL hsl(48 100% 50%)
CMYK cmyk(0, 20, 100, 0)
Luminance 0.6445
Contrast Black 13.89:1White 1.51:1

CSS Utilities

--color-caution-yellow: #FFCC00;
.bg-caution-yellow { background-color: #FFCC00; }
.text-caution-yellow { color: #FFCC00; }
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
Luminance0.6445
Black text13.89:1AA Pass
White text1.51:1AA 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": "#FFCC00",
  "rgb": [
    255,
    204,
    0
  ],
  "hsl": [
    48,
    100,
    50
  ],
  "cmyk": [
    0,
    20,
    100,
    0
  ],
  "luminance": 0.6445,
  "contrast": {
    "black": 13.89,
    "white": 1.51
  }
}
WCAG
{
  "AA": [
    "#000000",
    "#1A1A1A",
    "#36454F"
  ],
  "AAA": [
    "#000000",
    "#1A1A1A"
  ]
}
Harmonies
{
  "complementary": "#0033FF",
  "analogous": [
    "#FF4D00",
    "#B2FF00"
  ],
  "triadic": [
    "#00FFCC",
    "#CC00FF"
  ],
  "tetradic": [
    "#00FF4D",
    "#0033FF",
    "#FF00B2"
  ],
  "splitComplementary": [
    "#00B2FF",
    "#4D00FF"
  ],
  "monochromatic": [
    "#FFDE5C",
    "#FFCC00",
    "#A38300"
  ]
}
Variants
{
  "light": "#FFDE5C",
  "dark": "#A38300",
  "saturated": "#FFCC00",
  "desaturated": "#E3BB1C",
  "pastel": "#F5E089",
  "neon": "#FFD429"
}
Pairings
{
  "best": [
    "#000000",
    "#0033FF",
    "#FF4D00",
    "#B2FF00"
  ],
  "avoid": [
    "#E3BB1C",
    "#FFDE5C"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#FFDE5C",
    "#E3BB1C"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "cyber-yellow",
    "gold",
    "school-bus-yellow",
    "amber",
    "fluorescent-orange"
  ],
  "generatedPalettes": [
    "caution-yellow"
  ],
  "generatedComparisons": [
    "caution-yellow-vs-cyber-yellow",
    "caution-yellow-vs-gold"
  ],
  "relatedFamilies": [
    "/colors/by-family/yellow",
    "/colors/by-temperature/warm",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/caution-yellow",
    "/wcag/caution-yellow",
    "/css/colors/caution-yellow",
    "/hex/ffcc00"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/yellow",
      "/colors/by-temperature/warm",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/caution-yellow"
    ],
    "related": [
      "/colors/cyber-yellow",
      "/colors/gold",
      "/colors/school-bus-yellow",
      "/colors/amber",
      "/colors/fluorescent-orange",
      "/compare/caution-yellow-vs-cyber-yellow",
      "/compare/caution-yellow-vs-gold",
      "/harmonies/caution-yellow",
      "/wcag/caution-yellow",
      "/css/colors/caution-yellow",
      "/hex/ffcc00"
    ]
  }
}
Full JSON dataset 
{
  "slug": "caution-yellow",
  "name": "Caution Yellow",
  "hex": "#FFCC00",
  "uses": [
    "industrial design",
    "safety systems",
    "hardware palettes"
  ],
  "psychology": {
    "associations": [
      "utility",
      "visibility",
      "precision"
    ],
    "contexts": [
      "transportation",
      "tools",
      "hardware",
      "signage"
    ],
    "avoidIn": [
      "soft wellness palettes"
    ]
  },
  "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",
    "industrial-design",
    "safety-systems",
    "hardware-palettes",
    "utility",
    "visibility",
    "precision"
  ],
  "popularity": 84,
  "rgb": [
    255,
    204,
    0
  ],
  "hsl": [
    48,
    100,
    50
  ],
  "cmyk": [
    0,
    20,
    100,
    0
  ],
  "luminance": 0.6445,
  "contrast": {
    "black": 13.89,
    "white": 1.51
  },
  "harmonies": {
    "complementary": "#0033FF",
    "analogous": [
      "#FF4D00",
      "#B2FF00"
    ],
    "triadic": [
      "#00FFCC",
      "#CC00FF"
    ],
    "tetradic": [
      "#00FF4D",
      "#0033FF",
      "#FF00B2"
    ],
    "splitComplementary": [
      "#00B2FF",
      "#4D00FF"
    ],
    "monochromatic": [
      "#FFDE5C",
      "#FFCC00",
      "#A38300"
    ]
  },
  "variants": {
    "light": "#FFDE5C",
    "dark": "#A38300",
    "saturated": "#FFCC00",
    "desaturated": "#E3BB1C",
    "pastel": "#F5E089",
    "neon": "#FFD429"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "AAA": [
      "#000000",
      "#1A1A1A"
    ]
  },
  "css": {
    "variable": "--color-caution-yellow: #FFCC00;",
    "utility": ".bg-caution-yellow { background-color: #FFCC00; }",
    "textUtility": ".text-caution-yellow { color: #FFCC00; }"
  },
  "nearestColors": [
    "cyber-yellow",
    "gold",
    "school-bus-yellow",
    "amber",
    "fluorescent-orange"
  ],
  "generatedPalettes": [
    "caution-yellow"
  ],
  "generatedComparisons": [
    "caution-yellow-vs-cyber-yellow",
    "caution-yellow-vs-gold"
  ],
  "relatedFamilies": [
    "/colors/by-family/yellow",
    "/colors/by-temperature/warm",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/caution-yellow",
    "/wcag/caution-yellow",
    "/css/colors/caution-yellow",
    "/hex/ffcc00"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/yellow",
      "/colors/by-temperature/warm",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/caution-yellow"
    ],
    "related": [
      "/colors/cyber-yellow",
      "/colors/gold",
      "/colors/school-bus-yellow",
      "/colors/amber",
      "/colors/fluorescent-orange",
      "/compare/caution-yellow-vs-cyber-yellow",
      "/compare/caution-yellow-vs-gold",
      "/harmonies/caution-yellow",
      "/wcag/caution-yellow",
      "/css/colors/caution-yellow",
      "/hex/ffcc00"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#0033FF",
      "#FF4D00",
      "#B2FF00"
    ],
    "avoid": [
      "#E3BB1C",
      "#FFDE5C"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#FFDE5C",
      "#E3BB1C"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Caution Yellow Color

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

Its common associations include utility, visibility, and precision, which makes it relevant for transportation and tools. In design work, Caution Yellow is most useful for industrial design, safety systems, and hardware palettes, 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.Caution Yellow accessibilityCheck contrast and WCAG text options for #FFCC00.Caution Yellow CSS utilitiesUse Caution Yellow in CSS variables and utility classes.#FFCC00 HEX atlasOpen the permanent HEX atlas record for conversions and variants.Caution Yellow paletteOpen the generated palette based on Caution Yellow.Caution Yellow harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Caution Yellow against black and white text.

Black text13.89:1AA Pass
White text1.51:1AA Fail
AA text options#000000, #1A1A1A, #36454F
AAA text options#000000, #1A1A1A
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Cyber Yellow#FFD300
Gold#FFD700
School Bus Yellow#FFD800
Amber#FFBF00
Fluorescent Orange#FFBF00

Color Harmonies

#0033FF#0033FF
#FF4D00#FF4D00
#B2FF00#B2FF00
#00FFCC#00FFCC
#CC00FF#CC00FF
Open full Caution Yellow harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#FFDE5C#FFDE5C
#A38300#A38300
Caution Yellow#FFCC00
#E3BB1C#E3BB1C
#F5E089#F5E089
#FFD429#FFD429

Pairings

Black#000000
#0033FF#0033FF
#FF4D00#FF4D00
#B2FF00#B2FF00
Matte Black#1A1A1A
White Smoke#F5F5F5