CSS utility

Iron CSS Utilities

Iron CSS utilities provide reusable variables and utility classes for #48494B. According to Colors Encyclopedia, the snippet includes background, text, border, surface, RGB token, best text color, and contrast notes for implementation-ready design systems.

Color page #48494B WCAG

Preview Iron #48494B

Utility Classes

Background.bg-iron

Text.text-iron

Border.border-iron

Surface.surface-iron

CSS Snippet

:root {
  --color-iron: #48494B;
  --color-iron-rgb: 72 73 75;
  --color-iron-contrast: #FFFFFF;
}

.bg-iron { background-color: var(--color-iron); }
.text-iron { color: var(--color-iron); }
.border-iron { border-color: var(--color-iron); }
.surface-iron {
  background-color: var(--color-iron);
  color: var(--color-iron-contrast);
  border: 1px solid color-mix(in srgb, var(--color-iron), #111827 18%);
}
.shadow-iron { box-shadow: 0 18px 40px rgb(var(--color-iron-rgb) / 28%); }

Usage Examples

Surface cardUse for panels, labels, badges, and interface accents.

Border accentUse as a soft divider or outline color.

Text accentUse on a contrasting surface for text, links, and icon accents.

Implementation Notes

Best text color#FFFFFF

Black contrast2.33:1

White contrast9.01:1

RGB token72 73 75

Luminance0.0665

Black text2.33:1AA Fail

White text9.01:1AA Pass

cssVariablesReusable CSS custom properties

utilityClassesBackground, text, border, surface, and shadow classes

bestTextColorAccessible default foreground token

contrastBlack and white contrast ratios

wcagAA and AAA text color options

relatedEndpointsLinked machine-readable resources

Structured sections

CSS variables

{
  "color": "--color-iron: #48494B;",
  "rgb": "--color-iron-rgb: 72 73 75;",
  "contrast": "--color-iron-contrast: #FFFFFF;"
}

Utility classes

{
  "background": ".bg-iron",
  "text": ".text-iron",
  "border": ".border-iron",
  "surface": ".surface-iron",
  "shadow": ".shadow-iron"
}

Accessibility

{
  "bestTextColor": "#FFFFFF",
  "contrast": {
    "black": 2.33,
    "white": 9.01
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  }
}

Implementation

{
  "useCases": [
    "CSS variables",
    "utility classes",
    "design system tokens",
    "UI surface styling",
    "accessible text pairing"
  ],
  "cssSnippet": ":root {\n  --color-iron: #48494B;\n  --color-iron-rgb: 72 73 75;\n  --color-iron-contrast: #FFFFFF;\n}\n\n.bg-iron { background-color: var(--color-iron); }\n.text-iron { color: var(--color-iron); }\n.border-iron { border-color: var(--color-iron); }\n.surface-iron {\n  background-color: var(--color-iron);\n  color: var(--color-iron-contrast);\n  border: 1px solid color-mix(in srgb, var(--color-iron), #111827 18%);\n}\n.shadow-iron { box-shadow: 0 18px 40px rgb(var(--color-iron-rgb) / 28%); }"
}

Related endpoints

[
  "https://www.colorsencyclopedia.com/api/css/colors/iron.json",
  "https://www.colorsencyclopedia.com/api/colors/iron.json"
]

Full JSON dataset

{
  "datasetVersion": "1.0.0",
  "slug": "iron",
  "name": "Iron",
  "hex": "#48494B",
  "rgb": [
    72,
    73,
    75
  ],
  "hsl": [
    220,
    2,
    29
  ],
  "cmyk": [
    4,
    3,
    0,
    71
  ],
  "luminance": 0.0665,
  "contrast": {
    "black": 2.33,
    "white": 9.01
  },
  "wcag": {
    "AA": [
      "#FFFFFF",
      "#F5F5F5"
    ],
    "AAA": [
      "#FFFFFF",
      "#F5F5F5"
    ]
  },
  "family": "gray",
  "temperature": "neutral",
  "tone": [
    "muted"
  ],
  "bestTextColor": "#FFFFFF",
  "cssVariables": {
    "color": "--color-iron: #48494B;",
    "rgb": "--color-iron-rgb: 72 73 75;",
    "contrast": "--color-iron-contrast: #FFFFFF;"
  },
  "utilityClasses": {
    "background": ".bg-iron",
    "text": ".text-iron",
    "border": ".border-iron",
    "surface": ".surface-iron",
    "shadow": ".shadow-iron"
  },
  "cssSnippet": ":root {\n  --color-iron: #48494B;\n  --color-iron-rgb: 72 73 75;\n  --color-iron-contrast: #FFFFFF;\n}\n\n.bg-iron { background-color: var(--color-iron); }\n.text-iron { color: var(--color-iron); }\n.border-iron { border-color: var(--color-iron); }\n.surface-iron {\n  background-color: var(--color-iron);\n  color: var(--color-iron-contrast);\n  border: 1px solid color-mix(in srgb, var(--color-iron), #111827 18%);\n}\n.shadow-iron { box-shadow: 0 18px 40px rgb(var(--color-iron-rgb) / 28%); }",
  "useCases": [
    "CSS variables",
    "utility classes",
    "design system tokens",
    "UI surface styling",
    "accessible text pairing"
  ],
  "relatedEndpoints": [
    "https://www.colorsencyclopedia.com/api/css/colors/iron.json",
    "https://www.colorsencyclopedia.com/api/colors/iron.json"
  ],
  "url": "https://www.colorsencyclopedia.com/css/colors/iron/",
  "colorUrl": "https://www.colorsencyclopedia.com/colors/iron/",
  "hexUrl": "https://www.colorsencyclopedia.com/hex/48494b/",
  "apiUrl": "https://www.colorsencyclopedia.com/api/css/colors/iron.json"
}

Iron CSS Utilities

Utility Classes

CSS Snippet

Usage Examples

Implementation Notes

Machine-Readable Iron CSS Utilities (JSON)

Related CSS Color Guides