Gray color · CSS named color
Dark Slate Gray Color Code: #2F4F4F
Dark Slate Gray (#2F4F4F) is a dark gray with a faint cyan tint shade: RGB 47, 79, 79, HSL 180°, 25%, 25%. White text reads comfortably on it (8.92:1 contrast).
Also spelled “Dark Slate Grey”.
Dark Slate Gray color values
#2F4F4F
rgb(47, 79, 79)
hsl(180, 25%, 25%)
180, 41%, 31%
hwb(180 18% 69%)
41%, 0%, 0%, 69%
3100495
darkslategray
CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.
What is Dark Slate Gray?
Dark Slate Gray is one of the named colors defined by the CSS Color specifications (keyword “darkslategray”), so every modern browser understands it without a hex code.
Its saturation is only 25%, so it behaves as a neutral, with 25% saturation (soft) and 25% lightness (dark). It is a cool color.
Compared with the other gray colors in the Aqeeb Studio library, it is lighter than 8% of them and more saturated than 92% of them.
Its relative luminance is 0.068, which makes it a dark color. That is below the 0.179 crossover point at which black and white text have equal contrast, so white text has the advantage.
Dark Slate Gray counts as a dark color: its HSL lightness is 25% and its relative luminance is 0.068. White text reads comfortably on it (8.92:1 contrast).
Text contrast on Dark Slate Gray
| Text | Preview | Ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|---|
| White text | Sample text | 8.92:1 Excellent | Pass | Pass | Pass | Pass |
| Black text | Sample text | 2.35:1 Poor | Fail | Fail | Fail | Fail |
Ratios use the WCAG 2 formula and are truncated, never rounded up. Test any pair with the contrast checker.
Colors that go with Dark Slate Gray
Complementary color
Complementary colors sit directly opposite each other on the color wheel (180° apart). They give the strongest hue contrast, which suits calls to action and accents.
Analogous colors
Analogous colors are neighbors on the wheel, 30° either side of the base hue. They blend smoothly and are easy to combine in backgrounds, gradients and illustrations.
Triadic colors
A triadic scheme uses three hues spaced 120° apart. It is lively yet balanced, and works best when one color leads and the other two act as accents.
Split-complementary colors
Split-complementary keeps the base color and uses the two colors on either side of its complement (150° and 210°). The contrast is strong but gentler than a direct complement.
Tetradic colors
A tetradic (rectangle) scheme combines two complementary pairs at 0°, 60°, 180° and 240°. It offers variety but needs one dominant color to stay balanced.
Monochromatic variants
Monochromatic variants keep the same hue and saturation and only change lightness, which makes them dependable for UI scales and subtle layered designs.
A “≈” before a name means the exact harmony color has no named match, so the link goes to the closest named color.
Tints and shades of Dark Slate Gray
Lighter tints (mixed with white)
Darker shades (mixed with black)
Select any swatch to copy its HEX code. Build longer scales with the tints and shades tool.
Similar colors
Where to use Dark Slate Gray
- Button, banner and badge backgrounds with white text (8.92:1 contrast)
- Calm backgrounds, editorial layouts and understated UI elements
- Secondary buttons and disabled states
- Neutral page backgrounds
- Tables, cards and dashboards
- Body text, borders and dividers
Dark Slate Gray appears in these curated palettes: Slate and Steel (Blue Color Palettes), Red and Teal (Red Color Palettes), Cool Grays (Neutral Color Palettes), Mushroom (Neutral Color Palettes), Deep Teal (Dark Color Palettes), Soft Mono and Coral (Minimal Color Palettes).
Use Dark Slate Gray in CSS
:root {
--color-dark-slate-gray: #2F4F4F;
}
.element {
color: var(--color-dark-slate-gray);
background-color: #2F4F4F;
border: 2px solid #2F4F4F;
}Questions about Dark Slate Gray
What is the HEX code for Dark Slate Gray?
Dark Slate Gray is #2F4F4F.
What is the RGB value of Dark Slate Gray?
The RGB value of Dark Slate Gray is 47, 79, 79: 47 red, 79 green and 79 blue on a 0–255 scale, written rgb(47, 79, 79) in CSS.
What is the HSL value of Dark Slate Gray?
The HSL value of Dark Slate Gray is 180°, 25%, 25% (hue, saturation, lightness), written hsl(180, 25%, 25%) in CSS.
What is the CMYK value of Dark Slate Gray?
A standard conversion gives about C 41%, M 0%, Y 0%, K 69%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.
Is Dark Slate Gray a light or dark color?
Dark Slate Gray counts as a dark color: its HSL lightness is 25% and its relative luminance is 0.068. White text reads comfortably on it (8.92:1 contrast).
How does Dark Slate Gray look with white text?
White text on Dark Slate Gray has a contrast ratio of 8.92:1, rated Excellent. It meets WCAG AA for normal text.
How does Dark Slate Gray look with black text?
Black text on Dark Slate Gray has a contrast ratio of 2.35:1, rated Poor. It falls below the WCAG minimum for text.
What colors go well with Dark Slate Gray?
Purple Brown is its complementary color, and Dark Blue Green sits beside it as an analogous color. Lighter and darker variants of the same hue also work well for monochromatic palettes.
Where can Dark Slate Gray be used?
It suits button, banner and badge backgrounds with white text (8.92:1 contrast); calm backgrounds, editorial layouts and understated UI elements; secondary buttons and disabled states.
How do I use Dark Slate Gray in CSS?
Use color: #2F4F4F; for text, background-color: #2F4F4F; for fills, or define a custom property such as --color-dark-slate-gray: #2F4F4F; and reuse it with var(--color-dark-slate-gray).
About this color page
CSS named color (W3C CSS Color Module). Values are calculated from the HEX code; color names are labels, not trademarks or standards unless stated. Screens render colors differently, so always check important colors on your own device. See the disclaimer.