HEX to OKLCH: #474739

Also known as: Tailwind olive-700

#474739 → oklch(0.394 0.023 107.4)

Values are shown at full precision, so converting back gives exactly #474739. 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: 71/255 = 0.27843 → 0.063010  (((x + 0.055) / 1.055)^2.4)
G: 71/255 = 0.27843 → 0.063010  (((x + 0.055) / 1.055)^2.4)
B: 57/255 = 0.22353 → 0.040915  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.061873
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.060637
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.049091

3. cube root

l′ = ∛0.061873 = 0.395519
m′ = ∛0.060637 = 0.392868
s′ = ∛0.049091 = 0.366156

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.39353
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.00679
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.02167

5. Oklab → OKLCH

C = √(a² + b²) = 0.02271
H = atan2(b, a) = 107.399°
L = 0.39353

6. OKLCH

oklch(0.39353 0.02271 107.399)
rounded: oklch(0.394 0.023 107.4)

All formats

HEX: #474739
RGB: rgb(71 71 57)
RGB (legacy): rgb(71, 71, 57)
HSL: hsl(60.00 10.94% 25.10%) → hsl(60 11% 25%)
HWB: hwb(60 22% 72%)
OKLCH: oklch(0.394 0.023 107.4) · oklch(39.4% 0.023 107.4)
OKLab: oklab(0.394 -0.007 0.022)
Lab (D50): lab(29.83 -2.09 8.47)
LCH (D50): lch(29.83 8.73 103.88)
Display P3: color(display-p3 0.2784 0.2784 0.2291)
Linear sRGB: color(srgb-linear 0.0630 0.0630 0.0409)

Gamut: sRGB and Display P3

#474739 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.085 and Display P3 reaches 0.098; this color uses 27% of the sRGB chroma available.

CSS snippets

.element {
  color: #474739;
  color: rgb(71 71 57);
  color: hsl(60 11% 25%);
  color: oklch(0.394 0.023 107.4);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.394 0.023 107.4);
}
/* arbitrary values */
class="text-[#474739] bg-[oklch(0.394_0.023_107.4)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2784 0.2784 0.2291); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #474739 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

#575749 · oklch(0.454 0.023 107.4) · ΔL +0.06
#37372A · oklch(0.334 0.023 107.4) · ΔL −0.06

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