Colors Encyclopedia

Named color

Slate Navy

Slate Navy is a balanced blue color with HEX #30475E. According to Colors Encyclopedia, it has RGB 48, 71, 94, HSL 210, 32%, 28%, cool temperature, and is useful for interfaces, brand systems, and technical design.

#30475E blue cool balanced
HEX #30475E
RGB rgb(48, 71, 94)
HSL hsl(210 32% 28%)
CMYK cmyk(49, 24, 0, 63)
Luminance 0.0594
Contrast Black 2.19:1White 9.6:1

CSS Utilities

--color-slate-navy: #30475E;
.bg-slate-navy { background-color: #30475E; }
.text-slate-navy { color: #30475E; }
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
Luminance0.0594
Black text2.19:1AA Fail
White text9.6:1AA 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": "#30475E",
  "rgb": [
    48,
    71,
    94
  ],
  "hsl": [
    210,
    32,
    28
  ],
  "cmyk": [
    49,
    24,
    0,
    63
  ],
  "luminance": 0.0594,
  "contrast": {
    "black": 2.19,
    "white": 9.6
  }
}
WCAG
{
  "AA": [
    "#FFFFFF",
    "#F5F5F5"
  ],
  "AAA": [
    "#FFFFFF",
    "#F5F5F5"
  ]
}
Harmonies
{
  "complementary": "#5E4731",
  "analogous": [
    "#315E5E",
    "#31315E"
  ],
  "triadic": [
    "#5E3147",
    "#475E31"
  ],
  "tetradic": [
    "#5E315E",
    "#5E4731",
    "#315E31"
  ],
  "splitComplementary": [
    "#5E3131",
    "#5E5E31"
  ],
  "monochromatic": [
    "#50759B",
    "#30475E",
    "#111922"
  ]
}
Variants
{
  "light": "#50759B",
  "dark": "#111922",
  "saturated": "#21476E",
  "desaturated": "#40474F",
  "pastel": "#73879C",
  "neon": "#005CB8"
}
Pairings
{
  "best": [
    "#FFFFFF",
    "#5E4731",
    "#315E5E",
    "#31315E"
  ],
  "avoid": [
    "#40474F",
    "#50759B"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#FFFFFF"
  ],
  "lowContrast": [
    "#50759B",
    "#40474F"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "charcoal",
    "dark-slate-gray",
    "dark-slate-grey",
    "spruce",
    "pine-needle"
  ],
  "generatedPalettes": [
    "slate-navy"
  ],
  "generatedComparisons": [
    "slate-navy-vs-charcoal",
    "slate-navy-vs-dark-slate-gray"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/balanced"
  ],
  "relatedTools": [
    "/harmonies/slate-navy",
    "/wcag/slate-navy",
    "/css/colors/slate-navy",
    "/hex/30475e"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/balanced"
    ],
    "narrower": [
      "/palettes/slate-navy"
    ],
    "related": [
      "/colors/charcoal",
      "/colors/dark-slate-gray",
      "/colors/dark-slate-grey",
      "/colors/spruce",
      "/colors/pine-needle",
      "/compare/slate-navy-vs-charcoal",
      "/compare/slate-navy-vs-dark-slate-gray",
      "/harmonies/slate-navy",
      "/wcag/slate-navy",
      "/css/colors/slate-navy",
      "/hex/30475e"
    ]
  }
}
Full JSON dataset 
{
  "slug": "slate-navy",
  "name": "Slate Navy",
  "hex": "#30475E",
  "uses": [
    "interfaces",
    "brand systems",
    "technical design"
  ],
  "psychology": {
    "associations": [
      "trust",
      "clarity",
      "calm"
    ],
    "contexts": [
      "technology",
      "finance",
      "healthcare",
      "navigation"
    ],
    "avoidIn": [
      "high-warmth food palettes"
    ]
  },
  "aliases": [],
  "sourceType": "curated",
  "confidence": "medium",
  "reviewStatus": "manual",
  "sourceUrl": "https://www.colorsencyclopedia.com/assets/colors.json",
  "origin": {
    "type": "common",
    "notes": "Curated common color reference used in design and editorial color systems."
  },
  "family": "blue",
  "temperature": "cool",
  "tone": [
    "balanced"
  ],
  "editorialNotes": "Curated internal color record with computed technical properties.",
  "tags": [
    "blue",
    "cool",
    "balanced",
    "interfaces",
    "brand-systems",
    "technical-design",
    "trust",
    "clarity",
    "calm"
  ],
  "popularity": 80,
  "rgb": [
    48,
    71,
    94
  ],
  "hsl": [
    210,
    32,
    28
  ],
  "cmyk": [
    49,
    24,
    0,
    63
  ],
  "luminance": 0.0594,
  "contrast": {
    "black": 2.19,
    "white": 9.6
  },
  "harmonies": {
    "complementary": "#5E4731",
    "analogous": [
      "#315E5E",
      "#31315E"
    ],
    "triadic": [
      "#5E3147",
      "#475E31"
    ],
    "tetradic": [
      "#5E315E",
      "#5E4731",
      "#315E31"
    ],
    "splitComplementary": [
      "#5E3131",
      "#5E5E31"
    ],
    "monochromatic": [
      "#50759B",
      "#30475E",
      "#111922"
    ]
  },
  "variants": {
    "light": "#50759B",
    "dark": "#111922",
    "saturated": "#21476E",
    "desaturated": "#40474F",
    "pastel": "#73879C",
    "neon": "#005CB8"
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  "css": {
    "variable": "--color-slate-navy: #30475E;",
    "utility": ".bg-slate-navy { background-color: #30475E; }",
    "textUtility": ".text-slate-navy { color: #30475E; }"
  },
  "nearestColors": [
    "charcoal",
    "dark-slate-gray",
    "dark-slate-grey",
    "spruce",
    "pine-needle"
  ],
  "generatedPalettes": [
    "slate-navy"
  ],
  "generatedComparisons": [
    "slate-navy-vs-charcoal",
    "slate-navy-vs-dark-slate-gray"
  ],
  "relatedFamilies": [
    "/colors/by-family/blue",
    "/colors/by-temperature/cool",
    "/colors/by-tone/balanced"
  ],
  "relatedTools": [
    "/harmonies/slate-navy",
    "/wcag/slate-navy",
    "/css/colors/slate-navy",
    "/hex/30475e"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/blue",
      "/colors/by-temperature/cool",
      "/colors/by-tone/balanced"
    ],
    "narrower": [
      "/palettes/slate-navy"
    ],
    "related": [
      "/colors/charcoal",
      "/colors/dark-slate-gray",
      "/colors/dark-slate-grey",
      "/colors/spruce",
      "/colors/pine-needle",
      "/compare/slate-navy-vs-charcoal",
      "/compare/slate-navy-vs-dark-slate-gray",
      "/harmonies/slate-navy",
      "/wcag/slate-navy",
      "/css/colors/slate-navy",
      "/hex/30475e"
    ]
  },
  "pairings": {
    "best": [
      "#FFFFFF",
      "#5E4731",
      "#315E5E",
      "#31315E"
    ],
    "avoid": [
      "#40474F",
      "#50759B"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#FFFFFF"
    ],
    "lowContrast": [
      "#50759B",
      "#40474F"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Color meaning and use

About Slate Navy Color

Slate Navy sits in the blue family with cool temperature and balanced visual character. Slate Navy is a commonly used color name in design references, palettes, and editorial color systems.

Its common associations include trust, clarity, and calm, which makes it relevant for technology and finance. In design work, Slate Navy is most useful for interfaces, brand systems, and technical design, especially when paired with white text for stronger contrast.

Related Color Guides

Blue color familyBrowse named blue colors and compare nearby swatches.Cool colorsExplore colors with cool temperature behavior.Balanced colorsFind colors with balanced visual character.Slate Navy accessibilityCheck contrast and WCAG text options for #30475E.Slate Navy CSS utilitiesUse Slate Navy in CSS variables and utility classes.#30475E HEX atlasOpen the permanent HEX atlas record for conversions and variants.Slate Navy paletteOpen the generated palette based on Slate Navy.Slate Navy harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.

WCAG Accessibility

Contrast checks for Slate Navy against black and white text.

Black text2.19:1AA Fail
White text9.6:1AA Pass
AA text options#FFFFFF, #F5F5F5
AAA text options#FFFFFF, #F5F5F5
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Similar Colors

Charcoal#36454F
Dark Slate Gray#2F4F4F
Dark Slate Grey#2F4F4F
Spruce#2E4F4F
Pine Needle#334D41

Color Harmonies

#5E4731#5E4731
#315E5E#315E5E
#31315E#31315E
#5E3147#5E3147
#475E31#475E31
Open full Slate Navy harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#50759B#50759B
#111922#111922
#21476E#21476E
#40474F#40474F
#73879C#73879C
#005CB8#005CB8

Pairings

White#FFFFFF
#5E4731#5E4731
#315E5E#315E5E
#31315E#31315E
Matte Black#1A1A1A
White Smoke#F5F5F5