Colors Encyclopedia

Named color

Slate Navy

Slate Navy color #30475E: RGB 48, 71, 94 and HSL 210°, 32%, 28%. Explore its cool blue profile, contrast, CSS, palettes and harmonies.

#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

Use this color

Create with Slate Navy

Open a professional color tool with #30475E 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 Navy 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-navy: #30475E;
.bg-slate-navy { background-color: #30475E; }
.text-slate-navy { color: #30475E; }
Open CSS utility pageReusable variables, classes, examples, and implementation notes

Color meaning and use

About Slate Navy Color

Slate Navy uses HEX #30475E, RGB 48, 71, 94, and HSL 210°, 32%, 28%. The dataset classifies it in the blue family with cool temperature and balanced visual character.

No separate named-color neighbor is recorded for this entry. Its relative luminance is 0.0594; black contrast is 2.19:1 and white contrast is 9.6:1, making white the stronger of those two standard foreground choices.

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

Downloadable color reference infographic

Slate Navy Color Reference Infographic

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

1200 × 800
Slate Navy color reference infographic showing #30475E, RGB and HSL values, a coordinated palette, and black and white text contrast.
Slate Navy color reference infographic generated from the verified Colors Encyclopedia dataset.
Download WebPDownload SVGOpen full size

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#31315EMatte 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
Luminance0.0594
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",
    "/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/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",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  }
}
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",
    "/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/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",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  },
  "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

Similar Colors

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

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.