HEX to OKLCH: #A8A29E

Also known as: Tailwind v3 stone-400

#A8A29E → oklch(0.716 0.009 56.3)

Values are shown at full precision, so converting back gives exactly #a8a29e. 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: 168/255 = 0.65882 → 0.391572  (((x + 0.055) / 1.055)^2.4)
G: 162/255 = 0.63529 → 0.361307  (((x + 0.055) / 1.055)^2.4)
B: 158/255 = 0.61961 → 0.341914  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.372785
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.365638
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.351763

3. cube root

l′ = ∛0.372785 = 0.719702
m′ = ∛0.365638 = 0.715073
s′ = ∛0.351763 = 0.705911

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.71608
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.00503
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.00753

5. Oklab → OKLCH

C = √(a² + b²) = 0.00905
H = atan2(b, a) = 56.259°
L = 0.71608

6. OKLCH

oklch(0.71608 0.00905 56.259)
rounded: oklch(0.716 0.009 56.3)

All formats

HEX: #a8a29e
RGB: rgb(168 162 158)
RGB (legacy): rgb(168, 162, 158)
HSL: hsl(24.00 5.43% 63.92%) → hsl(24 5% 64%)
HWB: hwb(24 62% 34%)
OKLCH: oklch(0.716 0.009 56.3) · oklch(71.6% 0.009 56.3)
OKLab: oklab(0.716 0.005 0.008)
Lab (D50): lab(67.04 1.70 2.90)
LCH (D50): lch(67.04 3.36 59.61)
Display P3: color(display-p3 0.6547 0.6361 0.6215)
Linear sRGB: color(srgb-linear 0.3916 0.3613 0.3419)

Gamut: sRGB and Display P3

#A8A29E is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.175 and Display P3 reaches 0.199; this color uses 5% of the sRGB chroma available.

CSS snippets

.element {
  color: #a8a29e;
  color: rgb(168 162 158);
  color: hsl(24 5% 64%);
  color: oklch(0.716 0.009 56.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.716 0.009 56.3);
}
/* arbitrary values */
class="text-[#a8a29e] bg-[oklch(0.716_0.009_56.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.6547 0.6361 0.6215); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #a8a29e 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

#BBB5B1 · oklch(0.776 0.009 56.3) · ΔL +0.06
#96908C · oklch(0.656 0.009 56.3) · ΔL −0.06

Open in the studio

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