Colors Encyclopedia

Named color

Slate Grey

Slate Grey color #708090: RGB 112, 128, 144 and HSL 210°, 13%, 50%. Explore its cool blue profile, contrast, CSS, palettes and harmonies.

#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

Use this color

Create with Slate Grey

Open a professional color tool with #708090 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 Slate Grey 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-slate-grey: #708090;
.bg-slate-grey { background-color: #708090; }
.text-slate-grey { color: #708090; }
Open CSS utility pageReusable variables, classes, examples, and implementation notes

Color meaning and use

About Slate Grey Color

Slate Grey uses HEX #708090, RGB 112, 128, 144, and HSL 210°, 13%, 50%. The dataset classifies it in the blue family with cool temperature and muted visual character.

No separate named-color neighbor is recorded for this entry. Its relative luminance is 0.209; black contrast is 5.18:1 and white contrast is 4.05:1, making black the stronger of those two standard foreground choices.

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

Downloadable color reference infographic

Slate Grey Color Reference Infographic

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

1200 × 800
Slate Grey color reference infographic showing #708090, RGB and HSL values, a coordinated palette, and black and white text contrast.
Slate Grey color reference infographic generated from the verified Colors Encyclopedia dataset.
Download WebPDownload SVGOpen full size

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#537FACGrey#808080#BFBFBF#BFBFBF#2994FF#2994FF

Pairings

Black#000000#90806F#90806F#6F9090#6F9090#6F6F90#6F6F90Matte 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
Luminance0.209
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",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "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",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  }
}
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",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "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",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  },
  "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

Similar Colors

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

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.