Closest to Dark Slate Gray
#404060
Color conversions
Reference values for common CSS, design, and accessibility formats.
| Format | Value | Preview | Copy |
|---|---|---|---|
| HEX | 404060 | ||
| HEX with # | #404060 | ||
| RGB | rgb(64, 64, 96) | ||
| RGBA | rgba(64, 64, 96, 1) | ||
| HSL | hsl(240 20% 31.37%) | ||
| HSLA | hsla(240, 20%, 31.37%, 1) | ||
| HSV | hsv(240, 33.33%, 37.65%) | ||
| CMYK | cmyk(33.33%, 33.33%, 0%, 62.35%) | ||
| OKLCH | oklch(38.58% 0.054 283.58) |
Closest named matches
Color modifications
Lighter shades
Saturation steps
Suggested pairings
Split-complementary
Try this combo as a gradientUse this color in CSS
--color: #404060;
bg-[#404060]
Accessibility quick-check
White text
9.9:1
AAA normal
Black text
2.12:1
Decorative only
Reference notes
The hex value #404060 sits in the blue range with a deep appearance and soft chroma. Measured through common web color formats, the channels resolve to rgb(64 64 96) and an HSL lightness of 31%, which explains its visual density. The cool cast matters because neighboring colors can make the same hex feel sharper, calmer, or more neutral than it appears in isolation. Because web color is device-dependent, treat the numeric conversion table as the stable reference and use the visual swatch as a quick sanity check. The linked variants and pairings give nearby colors for systematic palettes, while the CSS Forge links let the same value move directly into CSS experiments. For brand-adjacent work, compare the closest named colors before reusing it, because a familiar name can change how stakeholders describe the same swatch. Designers can use it in interfaces that need weight, contrast, or a more formal visual register. When combined with lighter or darker variants, it gives enough range for borders, fills, and active states.