Colors Encyclopedia

Named color

Dark Red

Dark Red is a balanced red color with HEX #8B0000. According to Colors Encyclopedia, it has RGB 139, 0, 0, HSL 0, 100%, 27%, warm temperature, and is useful for web design, CSS color systems, and UI prototyping.

#8B0000 red warm balanced
HEX #8B0000
RGB rgb(139, 0, 0)
HSL hsl(0 100% 27%)
CMYK cmyk(0, 100, 100, 45)
Luminance 0.0549
Contrast Black 2.1:1White 10.01:1

CSS Utilities

--color-dark-red: #8B0000;
.bg-dark-red { background-color: #8B0000; }
.text-dark-red { color: #8B0000; }
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
Luminance0.0549
Black text2.1:1AA Fail
White text10.01:1AA 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": "#8B0000",
  "rgb": [
    139,
    0,
    0
  ],
  "hsl": [
    0,
    100,
    27
  ],
  "cmyk": [
    0,
    100,
    100,
    45
  ],
  "luminance": 0.0549,
  "contrast": {
    "black": 2.1,
    "white": 10.01
  }
}
WCAG
{
  "AA": [
    "#FFFFFF",
    "#F5F5F5"
  ],
  "AAA": [
    "#FFFFFF",
    "#F5F5F5"
  ]
}
Harmonies
{
  "complementary": "#008A8A",
  "analogous": [
    "#8A0045",
    "#8A4500"
  ],
  "triadic": [
    "#008A00",
    "#00008A"
  ],
  "tetradic": [
    "#458A00",
    "#008A8A",
    "#45008A"
  ],
  "splitComplementary": [
    "#008A45",
    "#00458A"
  ],
  "monochromatic": [
    "#E60000",
    "#8B0000",
    "#2E0000"
  ]
}
Variants
{
  "light": "#E60000",
  "dark": "#2E0000",
  "saturated": "#8A0000",
  "desaturated": "#7B0F0F",
  "pastel": "#ED1D1D",
  "neon": "#B30000"
}
Pairings
{
  "best": [
    "#FFFFFF",
    "#008A8A",
    "#8A0045",
    "#8A4500"
  ],
  "avoid": [
    "#7B0F0F",
    "#E60000"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#FFFFFF"
  ],
  "lowContrast": [
    "#E60000",
    "#7B0F0F"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "maroon",
    "crimson-red",
    "barn-red",
    "cranberry",
    "carmine"
  ],
  "generatedPalettes": [
    "dark-red"
  ],
  "generatedComparisons": [
    "barn-red-vs-dark-red",
    "crimson-red-vs-dark-red",
    "dark-red-vs-maroon"
  ],
  "relatedFamilies": [
    "/colors/by-family/red",
    "/colors/by-temperature/warm",
    "/colors/by-tone/balanced"
  ],
  "relatedTools": [
    "/harmonies/dark-red",
    "/wcag/dark-red",
    "/css/colors/dark-red",
    "/hex/8b0000"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/red",
      "/colors/by-temperature/warm",
      "/colors/by-tone/balanced"
    ],
    "narrower": [
      "/palettes/dark-red"
    ],
    "related": [
      "/colors/maroon",
      "/colors/crimson-red",
      "/colors/barn-red",
      "/colors/cranberry",
      "/colors/carmine",
      "/compare/barn-red-vs-dark-red",
      "/compare/crimson-red-vs-dark-red",
      "/compare/dark-red-vs-maroon",
      "/harmonies/dark-red",
      "/wcag/dark-red",
      "/css/colors/dark-red",
      "/hex/8b0000"
    ]
  }
}
Full JSON dataset 
{
  "slug": "dark-red",
  "name": "Dark Red",
  "cssName": "darkred",
  "hex": "#8B0000",
  "family": "red",
  "temperature": "warm",
  "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": [
    "darkred"
  ],
  "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": [
    "red",
    "warm",
    "balanced",
    "web-design",
    "css-color-systems",
    "ui-prototyping",
    "context-dependent"
  ],
  "popularity": 63,
  "rgb": [
    139,
    0,
    0
  ],
  "hsl": [
    0,
    100,
    27
  ],
  "cmyk": [
    0,
    100,
    100,
    45
  ],
  "luminance": 0.0549,
  "contrast": {
    "black": 2.1,
    "white": 10.01
  },
  "harmonies": {
    "complementary": "#008A8A",
    "analogous": [
      "#8A0045",
      "#8A4500"
    ],
    "triadic": [
      "#008A00",
      "#00008A"
    ],
    "tetradic": [
      "#458A00",
      "#008A8A",
      "#45008A"
    ],
    "splitComplementary": [
      "#008A45",
      "#00458A"
    ],
    "monochromatic": [
      "#E60000",
      "#8B0000",
      "#2E0000"
    ]
  },
  "variants": {
    "light": "#E60000",
    "dark": "#2E0000",
    "saturated": "#8A0000",
    "desaturated": "#7B0F0F",
    "pastel": "#ED1D1D",
    "neon": "#B30000"
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  "css": {
    "variable": "--color-dark-red: #8B0000;",
    "utility": ".bg-dark-red { background-color: #8B0000; }",
    "textUtility": ".text-dark-red { color: #8B0000; }"
  },
  "nearestColors": [
    "maroon",
    "crimson-red",
    "barn-red",
    "cranberry",
    "carmine"
  ],
  "generatedPalettes": [
    "dark-red"
  ],
  "generatedComparisons": [
    "barn-red-vs-dark-red",
    "crimson-red-vs-dark-red",
    "dark-red-vs-maroon"
  ],
  "relatedFamilies": [
    "/colors/by-family/red",
    "/colors/by-temperature/warm",
    "/colors/by-tone/balanced"
  ],
  "relatedTools": [
    "/harmonies/dark-red",
    "/wcag/dark-red",
    "/css/colors/dark-red",
    "/hex/8b0000"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/red",
      "/colors/by-temperature/warm",
      "/colors/by-tone/balanced"
    ],
    "narrower": [
      "/palettes/dark-red"
    ],
    "related": [
      "/colors/maroon",
      "/colors/crimson-red",
      "/colors/barn-red",
      "/colors/cranberry",
      "/colors/carmine",
      "/compare/barn-red-vs-dark-red",
      "/compare/crimson-red-vs-dark-red",
      "/compare/dark-red-vs-maroon",
      "/harmonies/dark-red",
      "/wcag/dark-red",
      "/css/colors/dark-red",
      "/hex/8b0000"
    ]
  },
  "pairings": {
    "best": [
      "#FFFFFF",
      "#008A8A",
      "#8A0045",
      "#8A4500"
    ],
    "avoid": [
      "#7B0F0F",
      "#E60000"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#FFFFFF"
    ],
    "lowContrast": [
      "#E60000",
      "#7B0F0F"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Dark Red Color

Dark Red sits in the red family with warm 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 Red is most useful for web design, css color systems, and ui prototyping, especially when paired with white text for stronger contrast.

Related Color Guides

Red color familyBrowse named red colors and compare nearby swatches.Warm colorsExplore colors with warm temperature behavior.Balanced colorsFind colors with balanced visual character.Dark Red accessibilityCheck contrast and WCAG text options for #8B0000.Dark Red CSS utilitiesUse Dark Red in CSS variables and utility classes.#8B0000 HEX atlasOpen the permanent HEX atlas record for conversions and variants.Dark Red paletteOpen the generated palette based on Dark Red.Dark Red harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Dark Red against black and white text.

Black text2.1:1AA Fail
White text10.01:1AA Pass
AA text options#FFFFFF, #F5F5F5
AAA text options#FFFFFF, #F5F5F5
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Maroon#800000
Crimson Red#990000
Barn Red#7C0A02
Cranberry#9F000F
Carmine#960018

Color Harmonies

#008A8A#008A8A
#8A0045#8A0045
#8A4500#8A4500
#008A00#008A00
#00008A#00008A
Open full Dark Red harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

Signal Red#E60000
#2E0000#2E0000
#8A0000#8A0000
#7B0F0F#7B0F0F
#ED1D1D#ED1D1D
#B30000#B30000

Pairings

White#FFFFFF
#008A8A#008A8A
#8A0045#8A0045
#8A4500#8A4500
Matte Black#1A1A1A
White Smoke#F5F5F5