Coal Mine

Also known as: Midnight Purple, Middle Red Purple, Poisonous Purple, Porphyrophobia

Quietly creative and luxurious, Coal Mine is a cool-toned purple that earns its keep in creative portfolios and premium packaging. Its complement lands in black territory, which makes for striking two-color pairings. It's dark enough to use for text on white backgrounds (18.82:1, passes WCAG AA).

Coal Mine color codes

HEX
#220033
RGB
rgb(34, 0, 51)
RGBA
rgba(34, 0, 51, 1)
HSL
hsl(280, 100%, 10%)
HSV
hsv(280, 100%, 20%)
CMYK
cmyk(33%, 100%, 0%, 80%)
LAB
lab(5.0 24.3 -25.1)
OKLCH
oklch(19.3% 0.097 311.2)

Color intelligence

sRGB safe

Displays accurately on every screen and translates well to print.

Temperature

CoolWarm

neutral, leaning cool

Nearest standard colors

  • CSS: midnightblue#191970 · ΔE 13.1
  • RAL 5022 — Night blue#2F2A5A · ΔE 12.2 · approximate

RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck — Pantone's values are proprietary and device-dependent, so we don't print lookups.

Where Coal Mine works

  • Web & UI: Use it directly for text on light surfaces; it clears AA contrast without adjustment.
  • Interiors: Use it where you want the eye to land — front door, built-ins, or one bold wall.
  • Fashion: One garment in this color carries an outfit; two starts to compete.
  • Branding: Signals imagination and indulgence — strong for beauty and creative-market brands.
  • Web & UI: Use it decoratively — dividers, chart series, illustration accents — and let neutrals carry the type.
  • Branding: Best in a brand's supporting palette — packaging interiors, patterns, campaign accents.

Copy as — every ecosystem

Tints, shades, and tones of Coal Mine

Tints (lighter)

Shades (darker)

Tones (muted)

Color harmonies

Palettes built from Coal Mine by rotating its hue in OKLCH space. Click any swatch to copy its hex code.

Complementary

Analogous

Triadic

Split-complementary

Tetradic

Monochromatic

Contrast & accessibility

Aa — on white

contrast 18.82:1

AA passAAA passAA large pass

Aa — on black

contrast 1.12:1

AA failAAA failAA large fail

Best text color on a Coal Mine background: #ffffff

Palettes featuring Coal Mine

Coal Mine with its complement

Soft neighbors of Coal Mine

Coal Mine triad

Similar colors

Looking for maximum contrast instead? The complement of Coal Mine is closest to Nightmare.

Coal Mine FAQs

What color is Coal Mine?

Coal Mine is a dark purple with the hex code #220033. In HSL terms it has a hue of 280°, 100% saturation, and 10% lightness.

What is the hex code for Coal Mine?

The hex code for Coal Mine is #220033. In RGB it's rgb(34, 0, 51), and in CMYK it's cmyk(33%, 100%, 0%, 80%).

What colors go well with Coal Mine?

Coal Mine pairs naturally with black tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.

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