HEX to OKLCH: #DCDCDC

Also known as: CSS gainsboro

#DCDCDC → oklch(0.894 0.000 0.0)

Values are shown at full precision, so converting back gives exactly #dcdcdc. The rounded form is what you normally paste into CSS.

Step-by-step math

Every number below is computed from the input, nothing is looked up.

1. sRGB → linear

R: 220/255 = 0.86275 → 0.715694  (((x + 0.055) / 1.055)^2.4)
G: 220/255 = 0.86275 → 0.715694  (((x + 0.055) / 1.055)^2.4)
B: 220/255 = 0.86275 → 0.715694  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.715694
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.715694
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.715694

3. cube root

l′ = ∛0.715694 = 0.894490
m′ = ∛0.715694 = 0.894490
s′ = ∛0.715694 = 0.894490

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.89449
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.00000
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.00000

5. Oklab → OKLCH

C = √(a² + b²) = 0.00000
H: a and b are ~0, so the hue is undefined (written as 0)
L = 0.89449

6. OKLCH

oklch(0.89449 0.00000 0.000)
rounded: oklch(0.894 0.000 0.0)

All formats

HEX: #dcdcdc
RGB: rgb(220 220 220)
RGB (legacy): rgb(220, 220, 220)
HSL: hsl(0.00 0.00% 86.27%) → hsl(0 0% 86%)
HWB: hwb(0 86% 14%)
OKLCH: oklch(0.894 0.000 0.0) · oklch(89.4% 0.000 0.0)
OKLab: oklab(0.894 0.000 0.000)
Lab (D50): lab(87.76 0.00 0.00)
LCH (D50): lch(87.76 0.00 0.00)
Display P3: color(display-p3 0.8627 0.8627 0.8627)
Linear sRGB: color(srgb-linear 0.7157 0.7157 0.7157)

Gamut: sRGB and Display P3

#DCDCDC is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.060 and Display P3 reaches 0.079; this color uses 0% of the sRGB chroma available.

CSS snippets

.element {
  color: #dcdcdc;
  color: rgb(220 220 220);
  color: hsl(0 0% 86%);
  color: oklch(0.894 0.000 0.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.894 0.000 0.0);
}
/* arbitrary values */
class="text-[#dcdcdc] bg-[oklch(0.894_0.000_0.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.8627 0.8627 0.8627); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #dcdcdc calc(l - 0.1) c h); }

Nearby colors

Closest colors in the Tailwind and CSS named palettes (OKLab distance).

Lighter and darker, same hue and chroma

#F0F0F0 · oklch(0.954 0.000 0.0) · ΔL +0.06
#C9C9C9 · oklch(0.834 0.000 0.0) · ΔL −0.06

Open in the studio

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