Colors Encyclopedia

Named color

Dark Slate Blue

Dark Slate Blue is a balanced blue color with HEX #483D8B. According to Colors Encyclopedia, it has RGB 72, 61, 139, HSL 248, 39%, 39%, cool temperature, and is useful for web design, CSS color systems, and UI prototyping.

#483D8B blue cool balanced
HEX #483D8B
RGB rgb(72, 61, 139)
HSL hsl(248 39% 39%)
CMYK cmyk(48, 56, 0, 45)
Luminance 0.0658
Contrast Black 2.32:1White 9.07:1

CSS Utilities

--color-dark-slate-blue: #483D8B;
.bg-dark-slate-blue { background-color: #483D8B; }
.text-dark-slate-blue { color: #483D8B; }
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
Luminance0.0658
Black text2.32:1AA Fail
White text9.07:1AA 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": "#483D8B",
  "rgb": [
    72,
    61,
    139
  ],
  "hsl": [
    248,
    39,
    39
  ],
  "cmyk": [
    48,
    56,
    0,
    45
  ],
  "luminance": 0.0658,
  "contrast": {
    "black": 2.32,
    "white": 9.07
  }
}
WCAG
{
  "AA": [
    "#FFFFFF",
    "#F5F5F5"
  ],
  "AAA": [
    "#FFFFFF",
    "#F5F5F5"
  ]
}
Harmonies
{
  "complementary": "#808A3D",
  "analogous": [
    "#3D598A",
    "#6E3D8A"
  ],
  "triadic": [
    "#8A473D",
    "#3D8A47"
  ],
  "tetradic": [
    "#8A3D59",
    "#808A3D",
    "#3D8A6E"
  ],
  "splitComplementary": [
    "#8A6E3D",
    "#598A3D"
  ],
  "monochromatic": [
    "#7267BC",
    "#483D8B",
    "#26214A"
  ]
}
Variants
{
  "light": "#7267BC",
  "dark": "#26214A",
  "saturated": "#3727A0",
  "desaturated": "#575374",
  "pastel": "#938DB9",
  "neon": "#2000F0"
}
Pairings
{
  "best": [
    "#FFFFFF",
    "#808A3D",
    "#3D598A",
    "#6E3D8A"
  ],
  "avoid": [
    "#575374",
    "#7267BC"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#FFFFFF"
  ],
  "lowContrast": [
    "#7267BC",
    "#575374"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "iolite",
    "amethyst-deep",
    "rebecca-purple",
    "imperial-purple",
    "tanzanite"
  ],
  "generatedPalettes": [
    "dark-slate-blue"
  ],
  "generatedComparisons": [
    "dark-slate-blue-vs-amethyst-deep",
    "dark-slate-blue-vs-iolite"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/balanced"
  ],
  "relatedTools": [
    "/harmonies/dark-slate-blue",
    "/wcag/dark-slate-blue",
    "/css/colors/dark-slate-blue",
    "/hex/483d8b"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/balanced"
    ],
    "narrower": [
      "/palettes/dark-slate-blue"
    ],
    "related": [
      "/colors/iolite",
      "/colors/amethyst-deep",
      "/colors/rebecca-purple",
      "/colors/imperial-purple",
      "/colors/tanzanite",
      "/compare/dark-slate-blue-vs-amethyst-deep",
      "/compare/dark-slate-blue-vs-iolite",
      "/harmonies/dark-slate-blue",
      "/wcag/dark-slate-blue",
      "/css/colors/dark-slate-blue",
      "/hex/483d8b"
    ]
  }
}
Full JSON dataset 
{
  "slug": "dark-slate-blue",
  "name": "Dark Slate Blue",
  "cssName": "darkslateblue",
  "hex": "#483D8B",
  "family": "blue",
  "temperature": "cool",
  "tone": [
    "balanced"
  ],
  "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": [
    "darkslateblue"
  ],
  "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",
    "balanced",
    "web-design",
    "css-color-systems",
    "ui-prototyping",
    "context-dependent"
  ],
  "popularity": 63,
  "rgb": [
    72,
    61,
    139
  ],
  "hsl": [
    248,
    39,
    39
  ],
  "cmyk": [
    48,
    56,
    0,
    45
  ],
  "luminance": 0.0658,
  "contrast": {
    "black": 2.32,
    "white": 9.07
  },
  "harmonies": {
    "complementary": "#808A3D",
    "analogous": [
      "#3D598A",
      "#6E3D8A"
    ],
    "triadic": [
      "#8A473D",
      "#3D8A47"
    ],
    "tetradic": [
      "#8A3D59",
      "#808A3D",
      "#3D8A6E"
    ],
    "splitComplementary": [
      "#8A6E3D",
      "#598A3D"
    ],
    "monochromatic": [
      "#7267BC",
      "#483D8B",
      "#26214A"
    ]
  },
  "variants": {
    "light": "#7267BC",
    "dark": "#26214A",
    "saturated": "#3727A0",
    "desaturated": "#575374",
    "pastel": "#938DB9",
    "neon": "#2000F0"
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  "css": {
    "variable": "--color-dark-slate-blue: #483D8B;",
    "utility": ".bg-dark-slate-blue { background-color: #483D8B; }",
    "textUtility": ".text-dark-slate-blue { color: #483D8B; }"
  },
  "nearestColors": [
    "iolite",
    "amethyst-deep",
    "rebecca-purple",
    "imperial-purple",
    "tanzanite"
  ],
  "generatedPalettes": [
    "dark-slate-blue"
  ],
  "generatedComparisons": [
    "dark-slate-blue-vs-amethyst-deep",
    "dark-slate-blue-vs-iolite"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/balanced"
  ],
  "relatedTools": [
    "/harmonies/dark-slate-blue",
    "/wcag/dark-slate-blue",
    "/css/colors/dark-slate-blue",
    "/hex/483d8b"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/balanced"
    ],
    "narrower": [
      "/palettes/dark-slate-blue"
    ],
    "related": [
      "/colors/iolite",
      "/colors/amethyst-deep",
      "/colors/rebecca-purple",
      "/colors/imperial-purple",
      "/colors/tanzanite",
      "/compare/dark-slate-blue-vs-amethyst-deep",
      "/compare/dark-slate-blue-vs-iolite",
      "/harmonies/dark-slate-blue",
      "/wcag/dark-slate-blue",
      "/css/colors/dark-slate-blue",
      "/hex/483d8b"
    ]
  },
  "pairings": {
    "best": [
      "#FFFFFF",
      "#808A3D",
      "#3D598A",
      "#6E3D8A"
    ],
    "avoid": [
      "#575374",
      "#7267BC"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#FFFFFF"
    ],
    "lowContrast": [
      "#7267BC",
      "#575374"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Dark Slate Blue Color

Dark Slate Blue sits in the blue family with cool temperature and balanced 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, Dark Slate Blue is most useful for web design, css color systems, and ui prototyping, 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.Balanced colorsFind colors with balanced visual character.Dark Slate Blue accessibilityCheck contrast and WCAG text options for #483D8B.Dark Slate Blue CSS utilitiesUse Dark Slate Blue in CSS variables and utility classes.#483D8B HEX atlasOpen the permanent HEX atlas record for conversions and variants.Dark Slate Blue paletteOpen the generated palette based on Dark Slate Blue.Dark Slate Blue harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Dark Slate Blue against black and white text.

Black text2.32:1AA Fail
White text9.07:1AA Pass
AA text options#FFFFFF, #F5F5F5
AAA text options#FFFFFF, #F5F5F5
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Iolite#5A4C8D
Amethyst Deep#5D3A9B
Rebecca Purple#663399
Imperial Purple#602F6B
Tanzanite#4D5DAB

Color Harmonies

#808A3D#808A3D
#3D598A#3D598A
#6E3D8A#6E3D8A
#8A473D#8A473D
#3D8A47#3D8A47
Open full Dark Slate Blue harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#7267BC#7267BC
#26214A#26214A
#3727A0#3727A0
#575374#575374
#938DB9#938DB9
#2000F0#2000F0

Pairings

White#FFFFFF
#808A3D#808A3D
#3D598A#3D598A
#6E3D8A#6E3D8A
Matte Black#1A1A1A
White Smoke#F5F5F5