HEX to OKLCH: #5B5B4B

Also known as: Tailwind olive-600

#5B5B4B → oklch(0.466 0.025 107.3)

Values are shown at full precision, so converting back gives exactly #5b5b4b. 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: 91/255 = 0.35686 → 0.104616  (((x + 0.055) / 1.055)^2.4)
G: 91/255 = 0.35686 → 0.104616  (((x + 0.055) / 1.055)^2.4)
B: 75/255 = 0.29412 → 0.070360  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.102854
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.100937
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.083036

3. cube root

l′ = ∛0.102854 = 0.468533
m′ = ∛0.100937 = 0.465605
s′ = ∛0.083036 = 0.436270

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.46634
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.00743
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.02380

5. Oklab → OKLCH

C = √(a² + b²) = 0.02493
H = atan2(b, a) = 107.329°
L = 0.46634

6. OKLCH

oklch(0.46634 0.02493 107.329)
rounded: oklch(0.466 0.025 107.3)

All formats

HEX: #5b5b4b
RGB: rgb(91 91 75)
RGB (legacy): rgb(91, 91, 75)
HSL: hsl(60.00 9.64% 32.55%) → hsl(60 10% 33%)
HWB: hwb(60 29% 64%)
OKLCH: oklch(0.466 0.025 107.3) · oklch(46.6% 0.025 107.3)
OKLab: oklab(0.466 -0.007 0.024)
Lab (D50): lab(38.29 -2.31 9.28)
LCH (D50): lch(38.29 9.56 103.98)
Display P3: color(display-p3 0.3569 0.3569 0.3004)
Linear sRGB: color(srgb-linear 0.1046 0.1046 0.0704)

Gamut: sRGB and Display P3

#5B5B4B is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.100 and Display P3 reaches 0.116; this color uses 25% of the sRGB chroma available.

CSS snippets

.element {
  color: #5b5b4b;
  color: rgb(91 91 75);
  color: hsl(60 10% 33%);
  color: oklch(0.466 0.025 107.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.466 0.025 107.3);
}
/* arbitrary values */
class="text-[#5b5b4b] bg-[oklch(0.466_0.025_107.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3569 0.3569 0.3004); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #5b5b4b 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

#6C6C5C · oklch(0.526 0.025 107.3) · ΔL +0.06
#4B4B3B · oklch(0.406 0.025 107.3) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

All converters →

Guides: What is OKLCH?