Colors Encyclopedia

Named color

Neon Blue

Neon Blue is a vibrant blue color with HEX #1F51FF. According to Colors Encyclopedia, it has RGB 31, 81, 255, HSL 227, 100%, 56%, cool temperature, and is useful for neon accents, event graphics, and high energy digital design.

#1F51FF blue cool vibrant
HEX #1F51FF
RGB rgb(31, 81, 255)
HSL hsl(227 100% 56%)
CMYK cmyk(88, 68, 0, 0)
Luminance 0.134
Contrast Black 3.68:1White 5.71:1

CSS Utilities

--color-neon-blue: #1F51FF;
.bg-neon-blue { background-color: #1F51FF; }
.text-neon-blue { color: #1F51FF; }
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
Luminance0.134
Black text3.68:1AA Fail
White text5.71:1AA Pass
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": "#1F51FF",
  "rgb": [
    31,
    81,
    255
  ],
  "hsl": [
    227,
    100,
    56
  ],
  "cmyk": [
    88,
    68,
    0,
    0
  ],
  "luminance": 0.134,
  "contrast": {
    "black": 3.68,
    "white": 5.71
  }
}
WCAG
{
  "AA": [
    "#FFFFFF",
    "#F5F5F5"
  ],
  "AAA": []
}
Harmonies
{
  "complementary": "#FFCE1F",
  "analogous": [
    "#1FBFFF",
    "#5E1FFF"
  ],
  "triadic": [
    "#FF1F4F",
    "#4FFF1F"
  ],
  "tetradic": [
    "#FF1FBF",
    "#FFCE1F",
    "#1FFF5E"
  ],
  "splitComplementary": [
    "#FF5E1F",
    "#BFFF1F"
  ],
  "monochromatic": [
    "#7A97FF",
    "#1F51FF",
    "#002AC2"
  ]
}
Variants
{
  "light": "#7A97FF",
  "dark": "#002AC2",
  "saturated": "#1F4FFF",
  "desaturated": "#375DE6",
  "pastel": "#A5B7F8",
  "neon": "#476FFF"
}
Pairings
{
  "best": [
    "#FFFFFF",
    "#FFCE1F",
    "#1FBFFF",
    "#5E1FFF"
  ],
  "avoid": [
    "#375DE6",
    "#7A97FF"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#FFFFFF"
  ],
  "lowContrast": [
    "#7A97FF",
    "#375DE6"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "royal-blue",
    "dodger-blue",
    "anodized-blue",
    "denim",
    "sapphire"
  ],
  "generatedPalettes": [
    "neon-blue"
  ],
  "generatedComparisons": [
    "neon-blue-vs-dodger-blue",
    "neon-blue-vs-royal-blue"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/neon-blue",
    "/wcag/neon-blue",
    "/css/colors/neon-blue",
    "/hex/1f51ff"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/neon-blue"
    ],
    "related": [
      "/colors/royal-blue",
      "/colors/dodger-blue",
      "/colors/anodized-blue",
      "/colors/denim",
      "/colors/sapphire",
      "/compare/neon-blue-vs-dodger-blue",
      "/compare/neon-blue-vs-royal-blue",
      "/harmonies/neon-blue",
      "/wcag/neon-blue",
      "/css/colors/neon-blue",
      "/hex/1f51ff"
    ]
  }
}
Full JSON dataset 
{
  "slug": "neon-blue",
  "name": "Neon Blue",
  "hex": "#1F51FF",
  "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": "blue",
  "temperature": "cool",
  "tone": [
    "vibrant"
  ],
  "editorialNotes": "Curated internal color record with computed technical properties.",
  "tags": [
    "blue",
    "cool",
    "vibrant",
    "neon-accents",
    "event-graphics",
    "high-energy-digital-design",
    "energy",
    "visibility",
    "motion"
  ],
  "popularity": 84,
  "rgb": [
    31,
    81,
    255
  ],
  "hsl": [
    227,
    100,
    56
  ],
  "cmyk": [
    88,
    68,
    0,
    0
  ],
  "luminance": 0.134,
  "contrast": {
    "black": 3.68,
    "white": 5.71
  },
  "harmonies": {
    "complementary": "#FFCE1F",
    "analogous": [
      "#1FBFFF",
      "#5E1FFF"
    ],
    "triadic": [
      "#FF1F4F",
      "#4FFF1F"
    ],
    "tetradic": [
      "#FF1FBF",
      "#FFCE1F",
      "#1FFF5E"
    ],
    "splitComplementary": [
      "#FF5E1F",
      "#BFFF1F"
    ],
    "monochromatic": [
      "#7A97FF",
      "#1F51FF",
      "#002AC2"
    ]
  },
  "variants": {
    "light": "#7A97FF",
    "dark": "#002AC2",
    "saturated": "#1F4FFF",
    "desaturated": "#375DE6",
    "pastel": "#A5B7F8",
    "neon": "#476FFF"
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": []
  },
  "css": {
    "variable": "--color-neon-blue: #1F51FF;",
    "utility": ".bg-neon-blue { background-color: #1F51FF; }",
    "textUtility": ".text-neon-blue { color: #1F51FF; }"
  },
  "nearestColors": [
    "royal-blue",
    "dodger-blue",
    "anodized-blue",
    "denim",
    "sapphire"
  ],
  "generatedPalettes": [
    "neon-blue"
  ],
  "generatedComparisons": [
    "neon-blue-vs-dodger-blue",
    "neon-blue-vs-royal-blue"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/neon-blue",
    "/wcag/neon-blue",
    "/css/colors/neon-blue",
    "/hex/1f51ff"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/neon-blue"
    ],
    "related": [
      "/colors/royal-blue",
      "/colors/dodger-blue",
      "/colors/anodized-blue",
      "/colors/denim",
      "/colors/sapphire",
      "/compare/neon-blue-vs-dodger-blue",
      "/compare/neon-blue-vs-royal-blue",
      "/harmonies/neon-blue",
      "/wcag/neon-blue",
      "/css/colors/neon-blue",
      "/hex/1f51ff"
    ]
  },
  "pairings": {
    "best": [
      "#FFFFFF",
      "#FFCE1F",
      "#1FBFFF",
      "#5E1FFF"
    ],
    "avoid": [
      "#375DE6",
      "#7A97FF"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#FFFFFF"
    ],
    "lowContrast": [
      "#7A97FF",
      "#375DE6"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Neon Blue Color

Neon Blue sits in the blue family with cool temperature and vibrant visual character. Neon Blue 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, Neon Blue is most useful for neon accents, event graphics, and high-energy digital design, especially when paired with white text for stronger contrast.

Related Color Guides

Blue color familyBrowse named blue colors and compare nearby swatches.Cool colorsExplore colors with cool temperature behavior.Vibrant colorsFind colors with vibrant visual character.Neon Blue accessibilityCheck contrast and WCAG text options for #1F51FF.Neon Blue CSS utilitiesUse Neon Blue in CSS variables and utility classes.#1F51FF HEX atlasOpen the permanent HEX atlas record for conversions and variants.Neon Blue paletteOpen the generated palette based on Neon Blue.Neon Blue harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Neon Blue against black and white text.

Black text3.68:1AA Fail
White text5.71:1AA Pass
AA text options#FFFFFF, #F5F5F5
AAA text optionsNone in seed set
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Royal Blue#4169E1
Dodger Blue#1E90FF
Anodized Blue#0066CC
Denim#1560BD
Sapphire#0F52BA

Color Harmonies

#FFCE1F#FFCE1F
#1FBFFF#1FBFFF
#5E1FFF#5E1FFF
#FF1F4F#FF1F4F
#4FFF1F#4FFF1F
Open full Neon Blue harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#7A97FF#7A97FF
#002AC2#002AC2
#1F4FFF#1F4FFF
#375DE6#375DE6
#A5B7F8#A5B7F8
#476FFF#476FFF

Pairings

White#FFFFFF
#FFCE1F#FFCE1F
#1FBFFF#1FBFFF
#5E1FFF#5E1FFF
Matte Black#1A1A1A
White Smoke#F5F5F5