Colors Encyclopedia

Named color

Slate Grey

Slate Grey is a muted blue color with HEX #708090. According to Colors Encyclopedia, it has RGB 112, 128, 144, HSL 210, 13%, 50%, cool temperature, and is useful for web design, CSS color systems, and UI prototyping.

#708090 blue cool muted
HEX #708090
RGB rgb(112, 128, 144)
HSL hsl(210 13% 50%)
CMYK cmyk(22, 11, 0, 44)
Luminance 0.209
Contrast Black 5.18:1White 4.05:1

CSS Utilities

--color-slate-grey: #708090;
.bg-slate-grey { background-color: #708090; }
.text-slate-grey { color: #708090; }
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
Luminance0.209
Black text5.18:1AA Pass
White text4.05:1AA 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": "#708090",
  "rgb": [
    112,
    128,
    144
  ],
  "hsl": [
    210,
    13,
    50
  ],
  "cmyk": [
    22,
    11,
    0,
    44
  ],
  "luminance": 0.209,
  "contrast": {
    "black": 5.18,
    "white": 4.05
  }
}
WCAG
{
  "AA": [
    "#000000"
  ],
  "AAA": []
}
Harmonies
{
  "complementary": "#90806F",
  "analogous": [
    "#6F9090",
    "#6F6F90"
  ],
  "triadic": [
    "#906F80",
    "#80906F"
  ],
  "tetradic": [
    "#906F90",
    "#90806F",
    "#6F906F"
  ],
  "splitComplementary": [
    "#906F6F",
    "#90906F"
  ],
  "monochromatic": [
    "#A3ADB8",
    "#708090",
    "#47525C"
  ]
}
Variants
{
  "light": "#A3ADB8",
  "dark": "#47525C",
  "saturated": "#537FAC",
  "desaturated": "#808080",
  "pastel": "#BFBFBF",
  "neon": "#2994FF"
}
Pairings
{
  "best": [
    "#000000",
    "#90806F",
    "#6F9090",
    "#6F6F90"
  ],
  "avoid": [
    "#808080",
    "#A3ADB8"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#A3ADB8",
    "#808080"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "slate-gray",
    "light-slate-gray",
    "light-slate-grey",
    "oxidized-copper",
    "labradorite"
  ],
  "generatedPalettes": [
    "slate-grey"
  ],
  "generatedComparisons": [
    "labradorite-vs-slate-grey",
    "slate-gray-vs-slate-grey",
    "slate-grey-vs-light-slate-gray"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/muted"
  ],
  "relatedTools": [
    "/harmonies/slate-grey",
    "/wcag/slate-grey",
    "/css/colors/slate-grey",
    "/hex/708090"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/muted"
    ],
    "narrower": [
      "/palettes/slate-grey"
    ],
    "related": [
      "/colors/slate-gray",
      "/colors/light-slate-gray",
      "/colors/light-slate-grey",
      "/colors/oxidized-copper",
      "/colors/labradorite",
      "/compare/labradorite-vs-slate-grey",
      "/compare/slate-gray-vs-slate-grey",
      "/compare/slate-grey-vs-light-slate-gray",
      "/harmonies/slate-grey",
      "/wcag/slate-grey",
      "/css/colors/slate-grey",
      "/hex/708090"
    ]
  }
}
Full JSON dataset 
{
  "slug": "slate-grey",
  "name": "Slate Grey",
  "cssName": "slategrey",
  "hex": "#708090",
  "family": "blue",
  "temperature": "cool",
  "tone": [
    "muted"
  ],
  "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": [
    "slategrey"
  ],
  "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",
    "muted",
    "web-design",
    "css-color-systems",
    "ui-prototyping",
    "context-dependent"
  ],
  "popularity": 67,
  "rgb": [
    112,
    128,
    144
  ],
  "hsl": [
    210,
    13,
    50
  ],
  "cmyk": [
    22,
    11,
    0,
    44
  ],
  "luminance": 0.209,
  "contrast": {
    "black": 5.18,
    "white": 4.05
  },
  "harmonies": {
    "complementary": "#90806F",
    "analogous": [
      "#6F9090",
      "#6F6F90"
    ],
    "triadic": [
      "#906F80",
      "#80906F"
    ],
    "tetradic": [
      "#906F90",
      "#90806F",
      "#6F906F"
    ],
    "splitComplementary": [
      "#906F6F",
      "#90906F"
    ],
    "monochromatic": [
      "#A3ADB8",
      "#708090",
      "#47525C"
    ]
  },
  "variants": {
    "light": "#A3ADB8",
    "dark": "#47525C",
    "saturated": "#537FAC",
    "desaturated": "#808080",
    "pastel": "#BFBFBF",
    "neon": "#2994FF"
  },
  "wcag": {
    "AA": [
      "#000000"
    ],
    "AAA": []
  },
  "css": {
    "variable": "--color-slate-grey: #708090;",
    "utility": ".bg-slate-grey { background-color: #708090; }",
    "textUtility": ".text-slate-grey { color: #708090; }"
  },
  "nearestColors": [
    "slate-gray",
    "light-slate-gray",
    "light-slate-grey",
    "oxidized-copper",
    "labradorite"
  ],
  "generatedPalettes": [
    "slate-grey"
  ],
  "generatedComparisons": [
    "labradorite-vs-slate-grey",
    "slate-gray-vs-slate-grey",
    "slate-grey-vs-light-slate-gray"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/muted"
  ],
  "relatedTools": [
    "/harmonies/slate-grey",
    "/wcag/slate-grey",
    "/css/colors/slate-grey",
    "/hex/708090"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/muted"
    ],
    "narrower": [
      "/palettes/slate-grey"
    ],
    "related": [
      "/colors/slate-gray",
      "/colors/light-slate-gray",
      "/colors/light-slate-grey",
      "/colors/oxidized-copper",
      "/colors/labradorite",
      "/compare/labradorite-vs-slate-grey",
      "/compare/slate-gray-vs-slate-grey",
      "/compare/slate-grey-vs-light-slate-gray",
      "/harmonies/slate-grey",
      "/wcag/slate-grey",
      "/css/colors/slate-grey",
      "/hex/708090"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#90806F",
      "#6F9090",
      "#6F6F90"
    ],
    "avoid": [
      "#808080",
      "#A3ADB8"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#A3ADB8",
      "#808080"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Slate Grey Color

Slate Grey sits in the blue family with cool temperature and muted 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, Slate Grey 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.Muted colorsFind colors with muted visual character.Slate Grey accessibilityCheck contrast and WCAG text options for #708090.Slate Grey CSS utilitiesUse Slate Grey in CSS variables and utility classes.#708090 HEX atlasOpen the permanent HEX atlas record for conversions and variants.Slate Grey paletteOpen the generated palette based on Slate Grey.Slate Grey harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Slate Grey against black and white text.

Black text5.18:1AA Pass
White text4.05:1AA Fail
AA text options#000000
AAA text optionsNone in seed set
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Slate Gray#708090
Light Slate Gray#778899
Light Slate Grey#778899
Oxidized Copper#6E7F80
Labradorite#607D8B

Color Harmonies

#90806F#90806F
#6F9090#6F9090
#6F6F90#6F6F90
#906F80#906F80
#80906F#80906F
Open full Slate Grey harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#A3ADB8#A3ADB8
#47525C#47525C
#537FAC#537FAC
Grey#808080
#BFBFBF#BFBFBF
#2994FF#2994FF

Pairings

Black#000000
#90806F#90806F
#6F9090#6F9090
#6F6F90#6F6F90
Matte Black#1A1A1A
White Smoke#F5F5F5