Colors Encyclopedia

Named color

Sienna

Sienna color #A0522D: RGB 160, 82, 45 and HSL 19°, 56%, 40%. Explore its warm orange profile, contrast, CSS, palettes and harmonies.

#A0522D orange warm earth-tone
HEX #A0522D
RGB rgb(160, 82, 45)
HSL hsl(19 56% 40%)
CMYK cmyk(0, 49, 72, 37)
Luminance 0.137
Contrast Black 3.74:1White 5.61:1

Use this color

Create with Sienna

Open a professional color tool with #A0522D 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 Sienna 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-sienna: #A0522D;
.bg-sienna { background-color: #A0522D; }
.text-sienna { color: #A0522D; }
Open CSS utility pageReusable variables, classes, examples, and implementation notes

Color meaning and use

About Sienna Color

Sienna uses HEX #A0522D, RGB 160, 82, 45, and HSL 19°, 56%, 40%. The dataset classifies it in the orange family with warm temperature and earth tone visual character.

No separate named-color neighbor is recorded for this entry. Its relative luminance is 0.137; black contrast is 3.74:1 and white contrast is 5.61:1, making white the stronger of those two standard foreground choices.

WCAG Accessibility

Contrast checks for Sienna against black and white text.

Black text3.74:1AA Fail
White text5.61:1AA Pass
AA text options#FFFFFF, #F5F5F5
AAA text optionsNone in seed set
Open WCAG pageDetailed contrast notes, warnings, alternatives, and UI examples

Downloadable color reference infographic

Sienna Color Reference Infographic

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

1200 × 800
Sienna color reference infographic showing #A0522D, RGB and HSL values, a coordinated palette, and black and white text contrast.
Sienna color reference infographic generated from the verified Colors Encyclopedia dataset.
Download WebPDownload SVGOpen full size

Color Harmonies

#2D7B9F#2D7B9F#9F2D42#9F2D42#9F8A2D#9F8A2D#2D9F51#2D9F51#512D9F#512D9F
Open full Sienna harmony pageComplementary, analogous, triadic, tetradic, split, and monochromatic sets

Variants

#D07E58#D07E58#582D19#582D19#B64916#B64916#895943#895943#CA9881#CA9881#F54E00#F54E00

Pairings

White#FFFFFF#2D7B9F#2D7B9F#9F2D42#9F2D42#9F8A2D#9F8A2DMatte 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
Luminance0.137
Black text3.74:1AA Fail
White text5.61:1AA 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": "#A0522D",
  "rgb": [
    160,
    82,
    45
  ],
  "hsl": [
    19,
    56,
    40
  ],
  "cmyk": [
    0,
    49,
    72,
    37
  ],
  "luminance": 0.137,
  "contrast": {
    "black": 3.74,
    "white": 5.61
  }
}
WCAG
{
  "AA": [
    "#FFFFFF",
    "#F5F5F5"
  ],
  "AAA": []
}
Harmonies
{
  "complementary": "#2D7B9F",
  "analogous": [
    "#9F2D42",
    "#9F8A2D"
  ],
  "triadic": [
    "#2D9F51",
    "#512D9F"
  ],
  "tetradic": [
    "#429F2D",
    "#2D7B9F",
    "#8A2D9F"
  ],
  "splitComplementary": [
    "#2D9F8A",
    "#2D429F"
  ],
  "monochromatic": [
    "#D07E58",
    "#A0522D",
    "#582D19"
  ]
}
Variants
{
  "light": "#D07E58",
  "dark": "#582D19",
  "saturated": "#B64916",
  "desaturated": "#895943",
  "pastel": "#CA9881",
  "neon": "#F54E00"
}
Pairings
{
  "best": [
    "#FFFFFF",
    "#2D7B9F",
    "#9F2D42",
    "#9F8A2D"
  ],
  "avoid": [
    "#895943",
    "#D07E58"
  ],
  "neutral": [
    "#1A1A1A",
    "#F5F5F5",
    "#E8E8E4"
  ],
  "highContrast": [
    "#FFFFFF"
  ],
  "lowContrast": [
    "#D07E58",
    "#895943"
  ]
}
Knowledge graph
{
  "nearestColors": [
    "cedar",
    "red-clay",
    "saddle-brown",
    "brick-red",
    "burnt-umber"
  ],
  "generatedPalettes": [
    "sienna"
  ],
  "generatedComparisons": [
    "cedar-vs-sienna",
    "sienna-vs-red-clay"
  ],
  "relatedFamilies": [
    "/colors/by-family/orange",
    "/colors/by-temperature/warm",
    "/colors/by-tone/earth-tone"
  ],
  "relatedTools": [
    "/harmonies/sienna",
    "/wcag/sienna",
    "/css/colors/sienna",
    "/hex/a0522d",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/orange",
      "/colors/by-temperature/warm",
      "/colors/by-tone/earth-tone"
    ],
    "narrower": [
      "/palettes/sienna"
    ],
    "related": [
      "/colors/cedar",
      "/colors/red-clay",
      "/colors/saddle-brown",
      "/colors/brick-red",
      "/colors/burnt-umber",
      "/compare/cedar-vs-sienna",
      "/compare/sienna-vs-red-clay",
      "/harmonies/sienna",
      "/wcag/sienna",
      "/css/colors/sienna",
      "/hex/a0522d",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  }
}
Full JSON dataset 
{
  "slug": "sienna",
  "name": "Sienna",
  "cssName": "sienna",
  "hex": "#A0522D",
  "family": "orange",
  "temperature": "warm",
  "tone": [
    "earth-tone"
  ],
  "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": [
    "sienna"
  ],
  "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": [
    "orange",
    "warm",
    "earth-tone",
    "web-design",
    "css-color-systems",
    "ui-prototyping",
    "context-dependent"
  ],
  "popularity": 67,
  "rgb": [
    160,
    82,
    45
  ],
  "hsl": [
    19,
    56,
    40
  ],
  "cmyk": [
    0,
    49,
    72,
    37
  ],
  "luminance": 0.137,
  "contrast": {
    "black": 3.74,
    "white": 5.61
  },
  "harmonies": {
    "complementary": "#2D7B9F",
    "analogous": [
      "#9F2D42",
      "#9F8A2D"
    ],
    "triadic": [
      "#2D9F51",
      "#512D9F"
    ],
    "tetradic": [
      "#429F2D",
      "#2D7B9F",
      "#8A2D9F"
    ],
    "splitComplementary": [
      "#2D9F8A",
      "#2D429F"
    ],
    "monochromatic": [
      "#D07E58",
      "#A0522D",
      "#582D19"
    ]
  },
  "variants": {
    "light": "#D07E58",
    "dark": "#582D19",
    "saturated": "#B64916",
    "desaturated": "#895943",
    "pastel": "#CA9881",
    "neon": "#F54E00"
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": []
  },
  "css": {
    "variable": "--color-sienna: #A0522D;",
    "utility": ".bg-sienna { background-color: #A0522D; }",
    "textUtility": ".text-sienna { color: #A0522D; }"
  },
  "nearestColors": [
    "cedar",
    "red-clay",
    "saddle-brown",
    "brick-red",
    "burnt-umber"
  ],
  "generatedPalettes": [
    "sienna"
  ],
  "generatedComparisons": [
    "cedar-vs-sienna",
    "sienna-vs-red-clay"
  ],
  "relatedFamilies": [
    "/colors/by-family/orange",
    "/colors/by-temperature/warm",
    "/colors/by-tone/earth-tone"
  ],
  "relatedTools": [
    "/harmonies/sienna",
    "/wcag/sienna",
    "/css/colors/sienna",
    "/hex/a0522d",
    "/tools/css-gradient-generator",
    "/tools/color-palette-generator",
    "/tools/css-color-mixer",
    "/tools/contrast-checker"
  ],
  "semanticRelations": {
    "broader": [
      "/colors/by-family/orange",
      "/colors/by-temperature/warm",
      "/colors/by-tone/earth-tone"
    ],
    "narrower": [
      "/palettes/sienna"
    ],
    "related": [
      "/colors/cedar",
      "/colors/red-clay",
      "/colors/saddle-brown",
      "/colors/brick-red",
      "/colors/burnt-umber",
      "/compare/cedar-vs-sienna",
      "/compare/sienna-vs-red-clay",
      "/harmonies/sienna",
      "/wcag/sienna",
      "/css/colors/sienna",
      "/hex/a0522d",
      "/tools/css-gradient-generator",
      "/tools/color-palette-generator",
      "/tools/css-color-mixer",
      "/tools/contrast-checker"
    ]
  },
  "pairings": {
    "best": [
      "#FFFFFF",
      "#2D7B9F",
      "#9F2D42",
      "#9F8A2D"
    ],
    "avoid": [
      "#895943",
      "#D07E58"
    ],
    "neutral": [
      "#1A1A1A",
      "#F5F5F5",
      "#E8E8E4"
    ],
    "highContrast": [
      "#FFFFFF"
    ],
    "lowContrast": [
      "#D07E58",
      "#895943"
    ]
  }
}
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

Similar Colors

Cedar#8B5A2B
Red Clay#B45A3C
Saddle Brown#8B4513
Brick Red#8A3324
Burnt Umber#8A3324

Related Color Guides

Orange color familyBrowse named orange colors and compare nearby swatches.Warm colorsExplore colors with warm temperature behavior.Earth Tone colorsFind colors with earth tone visual character.Sienna accessibilityCheck contrast and WCAG text options for #A0522D.Sienna CSS utilitiesUse Sienna in CSS variables and utility classes.#A0522D HEX atlasOpen the permanent HEX atlas record for conversions and variants.Sienna paletteOpen the generated palette based on Sienna.Sienna harmoniesExplore complementary, analogous, triadic, and tetradic harmonies.