HEX to OKLCH: #79716B

Also known as: Tailwind stone-500

#79716B → oklch(0.554 0.014 59.4)

Values are shown at full precision, so converting back gives exactly #79716b. 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: 121/255 = 0.47451 → 0.191202  (((x + 0.055) / 1.055)^2.4)
G: 113/255 = 0.44314 → 0.165132  (((x + 0.055) / 1.055)^2.4)
B: 107/255 = 0.41961 → 0.147027  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.174947
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.168712
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.156028

3. cube root

l′ = ∛0.174947 = 0.559288
m′ = ∛0.168712 = 0.552563
s′ = ∛0.156028 = 0.538354

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.55404
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.00690
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.01166

5. Oklab → OKLCH

C = √(a² + b²) = 0.01355
H = atan2(b, a) = 59.397°
L = 0.55404

6. OKLCH

oklch(0.55404 0.01355 59.397)
rounded: oklch(0.554 0.014 59.4)

All formats

HEX: #79716b
RGB: rgb(121 113 107)
RGB (legacy): rgb(121, 113, 107)
HSL: hsl(25.71 6.14% 44.71%) → hsl(26 6% 45%)
HWB: hwb(26 42% 53%)
OKLCH: oklch(0.554 0.014 59.4) · oklch(55.4% 0.014 59.4)
OKLab: oklab(0.554 0.007 0.012)
Lab (D50): lab(48.24 2.37 4.51)
LCH (D50): lch(48.24 5.10 62.29)
Display P3: color(display-p3 0.4691 0.4442 0.4224)
Linear sRGB: color(srgb-linear 0.1912 0.1651 0.1470)

Gamut: sRGB and Display P3

#79716B is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.131 and Display P3 reaches 0.149; this color uses 10% of the sRGB chroma available.

CSS snippets

.element {
  color: #79716b;
  color: rgb(121 113 107);
  color: hsl(26 6% 45%);
  color: oklch(0.554 0.014 59.4);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.554 0.014 59.4);
}
/* arbitrary values */
class="text-[#79716b] bg-[oklch(0.554_0.014_59.4)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.4691 0.4442 0.4224); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #79716b 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

#8B837C · oklch(0.614 0.014 59.4) · ΔL +0.06
#68605A · oklch(0.494 0.014 59.4) · ΔL −0.06

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