Coal Mine #220033 RGB Color Code
Name from the community color list.
Coal Mine (#220033) is a moderately saturated, very dark purple. In RGB it is made of 13% red, 0% green and 20% blue (R 34, G 0, B 51). The blue channel is the strongest. In HSL it has a hue of 280°, 100% saturation and 10% lightness. Its relative luminance is 0.006, so white text is easier to read on top of it. For print, a rough CMYK match is 33% cyan, 100% magenta, 0% yellow and 80% black. Check it against your printer's ICC profile before you print. It is a cool color. It goes well with warm oranges and reds for contrast. For a calm, matching look, use nearby cool tones.
Coal Mine color codes
#220033 in every common color format. Click a value to copy it.
| Format | Value | Copy |
|---|---|---|
| HEX | #220033 | |
| RGB | rgb(34, 0, 51) | |
| HSL | hsl(280, 100%, 10%) | |
| HSV / HSB | hsv(280, 100%, 20%) | |
| HWB | hwb(280 0% 80%) | |
| CMYK | cmyk(33%, 100%, 0%, 80%) | |
| OKLCH | oklch(19.29% 0.0969 311.21) | |
| OKLab | oklab(19.29% 0.0639 -0.0729) | |
| CIELAB | lab(5.03% 24.3 -25.14) | |
| CIELCH | lch(5.03% 34.96 314.03) | |
| Display P3 | color(display-p3 0.1186 0.0069 0.1912) | |
| XYZ (D65) | color(xyz-d65 0.0126 0.0058 0.0318) | |
| Decimal | 2228275 |
CMYK here is a rough screen match without an ICC profile. See CMYK and print. Relative luminance: 0.0058. Nearest web-safe color: #330033.
Mix Coal Mine with other colors
See what #220033 makes with red paint, under a green light, printed with cyan ink and in a digital blend with blue. Click a picture to change the colors and amounts in the color mixer.
Use Coal Mine in your code
Ready to paste into CSS, Sass, Tailwind, iOS, Android and Flutter. Click the icon to copy a line.
| Where | Code | Copy |
|---|---|---|
| CSS variable | --coal-mine: #220033; | |
| Sass variable | $coal-mine: #220033; | |
| Tailwind CSS v4 | @theme { --color-coal-mine: #220033; } | |
| Tailwind CSS v3 config | colors: { 'coal-mine': '#220033' } | |
| SwiftUI | Color(red: 0.133, green: 0, blue: 0.2) | |
| UIKit | UIColor(red: 0.133, green: 0, blue: 0.2, alpha: 1) | |
| Android XML | <color name="coal_mine">#FF220033</color> | |
| Flutter and Jetpack Compose | Color(0xFF220033) |
Accessibility and contrast
White text works best on #220033 (18.82:1, AAA). Here is how #220033 does as a text color:
Check this color against any background in the contrast checker. WCAG ratios and APCA Lc values measure different things, so one can't stand in for the other. Learn more.
How people with color blindness see Coal Mine
#220033 next to its complement and its two triadic colors, as seen with each type of color blindness.
- Normal visionhow most people see it
- Protanopiano red cones, about 1% of men
- Deuteranopiano green cones, the most common type
- Tritanopiano blue cones, very rare
- Achromatopsiano color at all, very rare
#220033 stays easy to tell apart from its complement and triadic colors for the common types of color blindness. Try your own colors in the color blindness simulator.
Coal Mine in a user interface
A sample app screen with #220033 as the main color, on a light and a dark theme.
Light theme
Dark theme
Buttons and bars use #220033 as it is. On the dark theme, #220033 is too hard to read as text (1.06:1), so links, the badge and outline text use #9672AE there (4.49:1). Build a full color scheme around it in the UI color preview.
Color harmonies for Coal Mine
These schemes turn the hue of #220033 around the color wheel. Each swatch links to its own page.
Complementary
Two colors on opposite sides of the wheel. This gives the most contrast.
Analogous
Hues that sit next to each other and look good together.
Triadic
Three hues spaced evenly around the wheel. Bold, but still balanced.
Split complementary
A base color plus the two hues on each side of its opposite. Strong contrast that clashes less.
Tetradic (rectangle)
Two pairs of opposite colors. Let one color lead and use the others less.
Square
Four hues 90° apart, spread evenly around the wheel.
Monochromatic
One hue at different levels of lightness and saturation.
Gradients with Coal Mine
Four CSS gradients made from #220033. Copy the code, or open one in the gradient generator to change it.
Soft tint
From a pale tint to the full color.
background: linear-gradient(90deg, #CEC7D4, #220033);
Deep shade
The color fading into a dark shade.
background: linear-gradient(180deg, #220033, #030007);
Analogous
Its two neighbors on the color wheel.
background: linear-gradient(135deg, #080033, #220033, #33002B);
Triadic
A bold blend with a triadic color, through a clean middle.
background: linear-gradient(135deg, #220033, #291521, #332200);
Shades, tints and tones of Coal Mine
Shades are darker, tints are lighter and tones are grayer. We make them in OKLCH so the steps look even. Hover a step to see its code, or click it to open it.
Design system scale (50 to 950)
Coal Mine sits at step 950. Export the full scale as CSS variables or Tailwind tokens from the picker.
Closest RAL, Tailwind and CSS colors
The nearest match to #220033 in three color systems that designers and builders use.
ΔE is the distance in OKLab: under 2 is hard to see, over 10 is a clearly different color. Browse all RAL colors, the Tailwind palette or the 148 CSS color names. RAL values on screens are only a guide, so check a real color chart before you order paint.
Colors similar to Coal Mine
The named colors that look closest to this one (ΔE in OKLab). Browse all shades of purple or search the color library.