Colors Encyclopedia

Named color

Deep Sky Blue

Deep Sky Blue is a vibrant blue color with HEX #00BFFF. According to Colors Encyclopedia, it has RGB 0, 191, 255, HSL 195, 100%, 50%, cool temperature, and is useful for web design, CSS color systems, and UI prototyping.

#00BFFF blue cool vibrant
HEX #00BFFF
RGB rgb(0, 191, 255)
HSL hsl(195 100% 50%)
CMYK cmyk(100, 25, 0, 0)
Luminance 0.4448
Contrast Black 9.9:1White 2.12:1

CSS Utilities

--color-deep-sky-blue: #00BFFF;
.bg-deep-sky-blue { background-color: #00BFFF; }
.text-deep-sky-blue { color: #00BFFF; }
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
Luminance0.4448
Black text9.9:1AA Pass
White text2.12:1AA 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": "#00BFFF",
  "rgb": [
    0,
    191,
    255
  ],
  "hsl": [
    195,
    100,
    50
  ],
  "cmyk": [
    100,
    25,
    0,
    0
  ],
  "luminance": 0.4448,
  "contrast": {
    "black": 9.9,
    "white": 2.12
  }
}
WCAG
{
  "AA": [
    "#000000",
    "#1A1A1A",
    "#36454F"
  ],
  "AAA": [
    "#000000",
    "#1A1A1A"
  ]
}
Harmonies
{
  "complementary": "#FF4000",
  "analogous": [
    "#00FFBF",
    "#0040FF"
  ],
  "triadic": [
    "#FF00BF",
    "#BFFF00"
  ],
  "tetradic": [
    "#BF00FF",
    "#FF4000",
    "#40FF00"
  ],
  "splitComplementary": [
    "#FF0040",
    "#FFBF00"
  ],
  "monochromatic": [
    "#5CD6FF",
    "#00BFFF",
    "#007AA3"
  ]
}
Variants
{
  "light": "#5CD6FF",
  "dark": "#007AA3",
  "saturated": "#00BFFF",
  "desaturated": "#1CB1E3",
  "pastel": "#89DAF5",
  "neon": "#29C9FF"
}
Pairings
{
  "best": [
    "#000000",
    "#FF4000",
    "#00FFBF",
    "#0040FF"
  ],
  "avoid": [
    "#1CB1E3",
    "#5CD6FF"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#5CD6FF",
    "#1CB1E3"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "dark-turquoise",
    "robin-egg-blue",
    "dodger-blue",
    "aqua",
    "cyan"
  ],
  "generatedPalettes": [
    "deep-sky-blue"
  ],
  "generatedComparisons": [
    "aqua-vs-deep-sky-blue",
    "cyan-vs-deep-sky-blue",
    "dark-turquoise-vs-deep-sky-blue",
    "deep-sky-blue-vs-robin-egg-blue",
    "dodger-blue-vs-deep-sky-blue"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/deep-sky-blue",
    "/wcag/deep-sky-blue",
    "/css/colors/deep-sky-blue",
    "/hex/00bfff"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/deep-sky-blue"
    ],
    "related": [
      "/colors/dark-turquoise",
      "/colors/robin-egg-blue",
      "/colors/dodger-blue",
      "/colors/aqua",
      "/colors/cyan",
      "/compare/aqua-vs-deep-sky-blue",
      "/compare/cyan-vs-deep-sky-blue",
      "/compare/dark-turquoise-vs-deep-sky-blue",
      "/compare/deep-sky-blue-vs-robin-egg-blue",
      "/compare/dodger-blue-vs-deep-sky-blue",
      "/harmonies/deep-sky-blue",
      "/wcag/deep-sky-blue",
      "/css/colors/deep-sky-blue",
      "/hex/00bfff"
    ]
  }
}
Full JSON dataset 
{
  "slug": "deep-sky-blue",
  "name": "Deep Sky Blue",
  "cssName": "deepskyblue",
  "hex": "#00BFFF",
  "family": "blue",
  "temperature": "cool",
  "tone": [
    "vibrant"
  ],
  "uses": [
    "web design",
    "CSS color systems",
    "UI prototyping"
  ],
  "psychology": {
    "associations": [
      "context dependent"
    ],
    "contexts": [
      "web interfaces",
      "design systems",
      "technical color references"
    ],
    "avoidIn": [
      "claims that require brand or cultural specificity"
    ]
  },
  "aliases": [
    "deepskyblue"
  ],
  "sourceType": "standard",
  "confidence": "high",
  "sourceUrl": "https://www.w3.org/TR/css-color-4/#named-colors",
  "origin": {
    "type": "css",
    "notes": "Standard CSS named color."
  },
  "reviewStatus": "auto",
  "editorialNotes": "Generated from CSS named color data and computed color-system properties.",
  "tags": [
    "blue",
    "cool",
    "vibrant",
    "web-design",
    "css-color-systems",
    "ui-prototyping",
    "context-dependent"
  ],
  "popularity": 67,
  "rgb": [
    0,
    191,
    255
  ],
  "hsl": [
    195,
    100,
    50
  ],
  "cmyk": [
    100,
    25,
    0,
    0
  ],
  "luminance": 0.4448,
  "contrast": {
    "black": 9.9,
    "white": 2.12
  },
  "harmonies": {
    "complementary": "#FF4000",
    "analogous": [
      "#00FFBF",
      "#0040FF"
    ],
    "triadic": [
      "#FF00BF",
      "#BFFF00"
    ],
    "tetradic": [
      "#BF00FF",
      "#FF4000",
      "#40FF00"
    ],
    "splitComplementary": [
      "#FF0040",
      "#FFBF00"
    ],
    "monochromatic": [
      "#5CD6FF",
      "#00BFFF",
      "#007AA3"
    ]
  },
  "variants": {
    "light": "#5CD6FF",
    "dark": "#007AA3",
    "saturated": "#00BFFF",
    "desaturated": "#1CB1E3",
    "pastel": "#89DAF5",
    "neon": "#29C9FF"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A",
      "#36454F"
    ],
    "AAA": [
      "#000000",
      "#1A1A1A"
    ]
  },
  "css": {
    "variable": "--color-deep-sky-blue: #00BFFF;",
    "utility": ".bg-deep-sky-blue { background-color: #00BFFF; }",
    "textUtility": ".text-deep-sky-blue { color: #00BFFF; }"
  },
  "nearestColors": [
    "dark-turquoise",
    "robin-egg-blue",
    "dodger-blue",
    "aqua",
    "cyan"
  ],
  "generatedPalettes": [
    "deep-sky-blue"
  ],
  "generatedComparisons": [
    "aqua-vs-deep-sky-blue",
    "cyan-vs-deep-sky-blue",
    "dark-turquoise-vs-deep-sky-blue",
    "deep-sky-blue-vs-robin-egg-blue",
    "dodger-blue-vs-deep-sky-blue"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/vibrant"
  ],
  "relatedTools": [
    "/harmonies/deep-sky-blue",
    "/wcag/deep-sky-blue",
    "/css/colors/deep-sky-blue",
    "/hex/00bfff"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/vibrant"
    ],
    "narrower": [
      "/palettes/deep-sky-blue"
    ],
    "related": [
      "/colors/dark-turquoise",
      "/colors/robin-egg-blue",
      "/colors/dodger-blue",
      "/colors/aqua",
      "/colors/cyan",
      "/compare/aqua-vs-deep-sky-blue",
      "/compare/cyan-vs-deep-sky-blue",
      "/compare/dark-turquoise-vs-deep-sky-blue",
      "/compare/deep-sky-blue-vs-robin-egg-blue",
      "/compare/dodger-blue-vs-deep-sky-blue",
      "/harmonies/deep-sky-blue",
      "/wcag/deep-sky-blue",
      "/css/colors/deep-sky-blue",
      "/hex/00bfff"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#FF4000",
      "#00FFBF",
      "#0040FF"
    ],
    "avoid": [
      "#1CB1E3",
      "#5CD6FF"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#5CD6FF",
      "#1CB1E3"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Deep Sky Blue Color

Deep Sky Blue sits in the blue family with cool temperature and vibrant visual character. Standard CSS named color.

Its common associations include context dependent, which makes it relevant for web interfaces and design systems. In design work, Deep Sky Blue is most useful for web design, css color systems, and ui prototyping, especially when paired with black 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.Deep Sky Blue accessibilityCheck contrast and WCAG text options for #00BFFF.Deep Sky Blue CSS utilitiesUse Deep Sky Blue in CSS variables and utility classes.#00BFFF HEX atlasOpen the permanent HEX atlas record for conversions and variants.Deep Sky Blue paletteOpen the generated palette based on Deep Sky Blue.Deep Sky Blue harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Deep Sky Blue against black and white text.

Black text9.9:1AA Pass
White text2.12:1AA Fail
AA text options#000000, #1A1A1A, #36454F
AAA text options#000000, #1A1A1A
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Dark Turquoise#00CED1
Robin Egg Blue#00CCCC
Dodger Blue#1E90FF
Aqua#00FFFF
Cyan#00FFFF

Color Harmonies

#FF4000#FF4000
#00FFBF#00FFBF
#0040FF#0040FF
#FF00BF#FF00BF
#BFFF00#BFFF00
Open full Deep Sky Blue harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#5CD6FF#5CD6FF
#007AA3#007AA3
Deep Sky Blue#00BFFF
#1CB1E3#1CB1E3
#89DAF5#89DAF5
#29C9FF#29C9FF

Pairings

Black#000000
#FF4000#FF4000
#00FFBF#00FFBF
#0040FF#0040FF
Matte Black#1A1A1A
White Smoke#F5F5F5