Blue color · CSS named color
Slate Blue Color Code: #6A5ACD
Slate Blue (#6A5ACD) is a medium, rich blue shade: RGB 106, 90, 205, HSL 248°, 53%, 58%. White text reads comfortably on it (5.30:1 contrast).
Slate Blue color values
#6A5ACD
rgb(106, 90, 205)
hsl(248, 53%, 58%)
248, 56%, 80%
hwb(248 35% 20%)
48%, 56%, 0%, 20%
6970061
slateblue
CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.
What is Slate Blue?
Slate Blue is one of the named colors defined by the CSS Color specifications (keyword “slateblue”), 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 53% saturation (rich) and 58% lightness (medium). It is a cool color.
Compared with the other blue colors in the Aqeeb Studio library, it is lighter than 72% of them and more saturated than 27% of them.
Its relative luminance is 0.148, which makes it a mid-tone color. That is below the 0.179 crossover point at which black and white text have equal contrast, so white text has the advantage.
Slate Blue counts as a dark color: its HSL lightness is 58% and its relative luminance is 0.148. White text reads comfortably on it (5.30:1 contrast).
Text contrast on Slate Blue
| Text | Preview | Ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|---|
| White text | Sample text | 5.30:1 Good | Pass | Pass | Fail | Pass |
| Black text | Sample text | 3.95:1 Limited | Fail | Pass | 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 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 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 Slate Blue
- Button, banner and badge backgrounds with white text (5.30:1 contrast)
- Large headings, icons and graphics, where a 3:1 contrast ratio is enough
- Charts and dashboards
- Links, buttons and primary interface accents
- Corporate, finance and software branding
- Headers and navigation bars
Slate Blue appears in these curated palettes: Blue Hour (Blue Color Palettes), Midnight (Dark Color Palettes), Friendly App (UI Color Palettes).
Use Slate Blue in CSS
:root {
--color-slate-blue: #6A5ACD;
}
.element {
color: var(--color-slate-blue);
background-color: #6A5ACD;
border: 2px solid #6A5ACD;
}Questions about Slate Blue
What is the HEX code for Slate Blue?
Slate Blue is #6A5ACD.
What is the RGB value of Slate Blue?
The RGB value of Slate Blue is 106, 90, 205: 106 red, 90 green and 205 blue on a 0–255 scale, written rgb(106, 90, 205) in CSS.
What is the HSL value of Slate Blue?
The HSL value of Slate Blue is 248°, 53%, 58% (hue, saturation, lightness), written hsl(248, 53%, 58%) in CSS.
What is the CMYK value of Slate Blue?
A standard conversion gives about C 48%, M 56%, Y 0%, K 20%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.
Is Slate Blue a light or dark color?
Slate Blue counts as a dark color: its HSL lightness is 58% and its relative luminance is 0.148. White text reads comfortably on it (5.30:1 contrast).
How does Slate Blue look with white text?
White text on Slate Blue has a contrast ratio of 5.30:1, rated Good. It meets WCAG AA for normal text.
How does Slate Blue look with black text?
Black text on Slate Blue has a contrast ratio of 3.95:1, rated Limited. It does not reach WCAG AA for normal text; use large text only.
What colors go well with Slate Blue?
Light Olive Green is its complementary color, and Dark Sky Blue sits beside it as an analogous color. Lighter and darker variants of the same hue also work well for monochromatic palettes.
Where can Slate Blue be used?
It suits button, banner and badge backgrounds with white text (5.30:1 contrast); large headings, icons and graphics, where a 3:1 contrast ratio is enough; charts and dashboards.
How do I use Slate Blue in CSS?
Use color: #6A5ACD; for text, background-color: #6A5ACD; for fills, or define a custom property such as --color-slate-blue: #6A5ACD; and reuse it with var(--color-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.