Colors Encyclopedia

Named color

Dark Red

Dark Red color #8B0000: RGB 139, 0, 0 and HSL 0°, 100%, 27%. Explore its warm red profile, contrast, CSS, palettes and harmonies.

#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

Use this color

Create with Dark Red

Open a professional color tool with #8B0000 already applied. Each configuration stays canonical to the tool and can be adjusted or shared.

All color tools
Generate palette & CSS variablesCreate 50–950 tokens and export CSS, SCSS, JSON, or Tailwind.Open configured tool →Open in Gradient StudioStart with Dark Red and its complementary color.Open configured tool →Mix this colorBlend it with a complementary color and copy color-mix() CSS.Open configured tool →Check contrastOpen the strongest black or white background pairing.Open configured tool →Accessible combinationsReview AA and AAA text options, alternatives, warnings, and UI guidance.Open configured tool →Create glass surfaceUse this color as the tint for a translucent UI panel.Open configured tool →

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

Color meaning and use

About Dark Red Color

Dark Red uses HEX #8B0000, RGB 139, 0, 0, and HSL 0°, 100%, 27%. The dataset classifies it in the red family with warm temperature and balanced visual character.

No separate named-color neighbor is recorded for this entry. Its relative luminance is 0.0549; black contrast is 2.1:1 and white contrast is 10.01:1, making white the stronger of those two standard foreground choices.

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

Downloadable color reference infographic

Dark Red Color Reference Infographic

Save a high-resolution infographic of Dark Red, including its color values, coordinated palette, and black and white text contrast.

1200 × 800
Dark Red color reference infographic showing #8B0000, RGB and HSL values, a coordinated palette, and black and white text contrast.
Dark Red color reference infographic generated from the verified Colors Encyclopedia dataset.
Download WebPDownload SVGOpen full size

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#8A4500Matte Black#1A1A1AWhite Smoke#F5F5F5

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",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "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",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  }
}
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",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "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",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  },
  "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

Similar Colors

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

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.