Blue color · CSS named color
Dark Slate Blue Color Code: #483D8B
Dark Slate Blue (#483D8B) is a medium-dark, soft blue shade: RGB 72, 61, 139, HSL 248°, 39%, 39%. White text reads comfortably on it (9.06:1 contrast).
Dark Slate Blue color values
#483D8B
rgb(72, 61, 139)
hsl(248, 39%, 39%)
248, 56%, 55%
hwb(248 24% 45%)
48%, 56%, 0%, 45%
4734347
darkslateblue
CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.
What is Dark Slate Blue?
Dark Slate Blue is one of the named colors defined by the CSS Color specifications (keyword “darkslateblue”), so every modern browser understands it without a hex code.
Its hue angle of 248° places it in the blue part of the color wheel, with 39% saturation (soft) and 39% lightness (medium-dark). It is a cool color.
Compared with the other blue colors in the Aqeeb Studio library, it is lighter than 28% of them and more saturated than 12% of them.
Its relative luminance is 0.066, 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 Blue counts as a dark color: its HSL lightness is 39% and its relative luminance is 0.066. White text reads comfortably on it (9.06:1 contrast).
Text contrast on Dark Slate Blue
| Text | Preview | Ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|---|
| White text | Sample text | 9.06:1 Excellent | Pass | Pass | Pass | Pass |
| Black text | Sample text | 2.31:1 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 Blue
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 Blue
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 Blue
- Button, banner and badge backgrounds with white text (9.06:1 contrast)
- Charts and dashboards
- Links, buttons and primary interface accents
- Corporate, finance and software branding
- Headers and navigation bars
Dark Slate Blue appears in these curated palettes: Blue Hour (Blue Color Palettes), Midnight (Dark Color Palettes), Dark Violet (Dark Color Palettes).
Use Dark Slate Blue in CSS
:root {
--color-dark-slate-blue: #483D8B;
}
.element {
color: var(--color-dark-slate-blue);
background-color: #483D8B;
border: 2px solid #483D8B;
}Questions about Dark Slate Blue
What is the HEX code for Dark Slate Blue?
Dark Slate Blue is #483D8B.
What is the RGB value of Dark Slate Blue?
The RGB value of Dark Slate Blue is 72, 61, 139: 72 red, 61 green and 139 blue on a 0–255 scale, written rgb(72, 61, 139) in CSS.
What is the HSL value of Dark Slate Blue?
The HSL value of Dark Slate Blue is 248°, 39%, 39% (hue, saturation, lightness), written hsl(248, 39%, 39%) in CSS.
What is the CMYK value of Dark Slate Blue?
A standard conversion gives about C 48%, M 56%, Y 0%, K 45%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.
Is Dark Slate Blue a light or dark color?
Dark Slate Blue counts as a dark color: its HSL lightness is 39% and its relative luminance is 0.066. White text reads comfortably on it (9.06:1 contrast).
How does Dark Slate Blue look with white text?
White text on Dark Slate Blue has a contrast ratio of 9.06:1, rated Excellent. It meets WCAG AA for normal text.
How does Dark Slate Blue look with black text?
Black text on Dark Slate Blue has a contrast ratio of 2.31:1, rated Poor. It falls below the WCAG minimum for text.
What colors go well with Dark Slate Blue?
Khaki Green is its complementary color, and Denim Blue 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 Blue be used?
It suits button, banner and badge backgrounds with white text (9.06:1 contrast); charts and dashboards; links, buttons and primary interface accents.
How do I use Dark Slate Blue in CSS?
Use color: #483D8B; for text, background-color: #483D8B; for fills, or define a custom property such as --color-dark-slate-blue: #483D8B; and reuse it with var(--color-dark-slate-blue).
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.