Colors Encyclopedia

Named color

Light Slate Grey

Light Slate Grey is a muted blue color with HEX #778899. According to Colors Encyclopedia, it has RGB 119, 136, 153, HSL 210, 14%, 53%, cool temperature, and is useful for web design, CSS color systems, and UI prototyping.

#778899 blue cool muted
HEX #778899
RGB rgb(119, 136, 153)
HSL hsl(210 14% 53%)
CMYK cmyk(22, 11, 0, 40)
Luminance 0.2383
Contrast Black 5.77:1White 3.64:1

CSS Utilities

--color-light-slate-grey: #778899;
.bg-light-slate-grey { background-color: #778899; }
.text-light-slate-grey { color: #778899; }
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
Luminance0.2383
Black text5.77:1AA Pass
White text3.64:1AA 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": "#778899",
  "rgb": [
    119,
    136,
    153
  ],
  "hsl": [
    210,
    14,
    53
  ],
  "cmyk": [
    22,
    11,
    0,
    40
  ],
  "luminance": 0.2383,
  "contrast": {
    "black": 5.77,
    "white": 3.64
  }
}
WCAG
{
  "AA": [
    "#000000",
    "#1A1A1A"
  ],
  "AAA": []
}
Harmonies
{
  "complementary": "#988776",
  "analogous": [
    "#769898",
    "#767698"
  ],
  "triadic": [
    "#987687",
    "#879876"
  ],
  "tetradic": [
    "#987698",
    "#988776",
    "#769876"
  ],
  "splitComplementary": [
    "#987676",
    "#989876"
  ],
  "monochromatic": [
    "#ABB5BF",
    "#778899",
    "#4D5966"
  ]
}
Variants
{
  "light": "#ABB5BF",
  "dark": "#4D5966",
  "saturated": "#5C87B2",
  "desaturated": "#878787",
  "pastel": "#C7C7C7",
  "neon": "#389CFF"
}
Pairings
{
  "best": [
    "#000000",
    "#988776",
    "#769898",
    "#767698"
  ],
  "avoid": [
    "#878787",
    "#ABB5BF"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#000000"
  ],
  "lowContrast": [
    "#ABB5BF",
    "#878787"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "light-slate-gray",
    "slate-gray",
    "slate-grey",
    "river-stone",
    "pewter"
  ],
  "generatedPalettes": [
    "light-slate-grey"
  ],
  "generatedComparisons": [
    "cadet-blue-vs-light-slate-grey",
    "light-slate-gray-vs-light-slate-grey",
    "light-slate-grey-vs-slate-gray"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/muted"
  ],
  "relatedTools": [
    "/harmonies/light-slate-grey",
    "/wcag/light-slate-grey",
    "/css/colors/light-slate-grey",
    "/hex/778899"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/muted"
    ],
    "narrower": [
      "/palettes/light-slate-grey"
    ],
    "related": [
      "/colors/light-slate-gray",
      "/colors/slate-gray",
      "/colors/slate-grey",
      "/colors/river-stone",
      "/colors/pewter",
      "/compare/cadet-blue-vs-light-slate-grey",
      "/compare/light-slate-gray-vs-light-slate-grey",
      "/compare/light-slate-grey-vs-slate-gray",
      "/harmonies/light-slate-grey",
      "/wcag/light-slate-grey",
      "/css/colors/light-slate-grey",
      "/hex/778899"
    ]
  }
}
Full JSON dataset 
{
  "slug": "light-slate-grey",
  "name": "Light Slate Grey",
  "cssName": "lightslategrey",
  "hex": "#778899",
  "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": [
    "lightslategrey"
  ],
  "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": [
    119,
    136,
    153
  ],
  "hsl": [
    210,
    14,
    53
  ],
  "cmyk": [
    22,
    11,
    0,
    40
  ],
  "luminance": 0.2383,
  "contrast": {
    "black": 5.77,
    "white": 3.64
  },
  "harmonies": {
    "complementary": "#988776",
    "analogous": [
      "#769898",
      "#767698"
    ],
    "triadic": [
      "#987687",
      "#879876"
    ],
    "tetradic": [
      "#987698",
      "#988776",
      "#769876"
    ],
    "splitComplementary": [
      "#987676",
      "#989876"
    ],
    "monochromatic": [
      "#ABB5BF",
      "#778899",
      "#4D5966"
    ]
  },
  "variants": {
    "light": "#ABB5BF",
    "dark": "#4D5966",
    "saturated": "#5C87B2",
    "desaturated": "#878787",
    "pastel": "#C7C7C7",
    "neon": "#389CFF"
  },
  "wcag": {
    "AA": [
      "#000000",
      "#1A1A1A"
    ],
    "AAA": []
  },
  "css": {
    "variable": "--color-light-slate-grey: #778899;",
    "utility": ".bg-light-slate-grey { background-color: #778899; }",
    "textUtility": ".text-light-slate-grey { color: #778899; }"
  },
  "nearestColors": [
    "light-slate-gray",
    "slate-gray",
    "slate-grey",
    "river-stone",
    "pewter"
  ],
  "generatedPalettes": [
    "light-slate-grey"
  ],
  "generatedComparisons": [
    "cadet-blue-vs-light-slate-grey",
    "light-slate-gray-vs-light-slate-grey",
    "light-slate-grey-vs-slate-gray"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/muted"
  ],
  "relatedTools": [
    "/harmonies/light-slate-grey",
    "/wcag/light-slate-grey",
    "/css/colors/light-slate-grey",
    "/hex/778899"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/muted"
    ],
    "narrower": [
      "/palettes/light-slate-grey"
    ],
    "related": [
      "/colors/light-slate-gray",
      "/colors/slate-gray",
      "/colors/slate-grey",
      "/colors/river-stone",
      "/colors/pewter",
      "/compare/cadet-blue-vs-light-slate-grey",
      "/compare/light-slate-gray-vs-light-slate-grey",
      "/compare/light-slate-grey-vs-slate-gray",
      "/harmonies/light-slate-grey",
      "/wcag/light-slate-grey",
      "/css/colors/light-slate-grey",
      "/hex/778899"
    ]
  },
  "pairings": {
    "best": [
      "#000000",
      "#988776",
      "#769898",
      "#767698"
    ],
    "avoid": [
      "#878787",
      "#ABB5BF"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#000000"
    ],
    "lowContrast": [
      "#ABB5BF",
      "#878787"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Light Slate Grey Color

Light 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, Light 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.Light Slate Grey accessibilityCheck contrast and WCAG text options for #778899.Light Slate Grey CSS utilitiesUse Light Slate Grey in CSS variables and utility classes.#778899 HEX atlasOpen the permanent HEX atlas record for conversions and variants.Light Slate Grey paletteOpen the generated palette based on Light Slate Grey.Light Slate Grey harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Light Slate Grey against black and white text.

Black text5.77:1AA Pass
White text3.64:1AA Fail
AA text options#000000, #1A1A1A
AAA text optionsNone in seed set
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Light Slate Gray#778899
Slate Gray#708090
Slate Grey#708090
River Stone#7E8A8A
Pewter#899499

Color Harmonies

#988776#988776
#769898#769898
#767698#767698
#987687#987687
#879876#879876
Open full Light Slate Grey harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#ABB5BF#ABB5BF
#4D5966#4D5966
#5C87B2#5C87B2
#878787#878787
#C7C7C7#C7C7C7
#389CFF#389CFF

Pairings

Black#000000
#988776#988776
#769898#769898
#767698#767698
Matte Black#1A1A1A
White Smoke#F5F5F5