HEX to HSL: #737373

Result

Values are shown at full precision, so converting back gives exactly #737373. 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. 1. RGB ÷ 255

   R = 0.4510
   G = 0.4510
   B = 0.4510

2. 2. max, min, Δ

   max = 0.4510
   min = 0.4510
   Δ = max − min = 0.0000

3. 3. L

   L = (max + min) / 2 = 0.4510 = 45.10%

4. 4. S

   S = Δ / (1 − |2L − 1|) = 0.0000 = 0.00%

5. 5. H

   Δ = 0 → grey, hue is undefined (written as 0)

6. 6. HSL

   hsl(0.00 0.00% 45.10%)

All formats

HEX

#737373

RGB

rgb(115 115 115)

RGB (legacy)

rgb(115, 115, 115)

HSL

hsl(0.00 0.00% 45.10%) → hsl(0 0% 45%)

HWB

hwb(0 45% 55%)

OKLCH

oklch(0.556 0.000 0.0) · oklch(55.6% 0.000 0.0)

OKLab

oklab(0.556 0.000 0.000)

Lab (D50)

lab(48.44 0.00 0.00)

LCH (D50)

lch(48.44 0.00 0.00)

Display P3

color(display-p3 0.4510 0.4510 0.4510)

Linear sRGB

color(srgb-linear 0.1714 0.1714 0.1714)

Gamut: sRGB and Display P3

#737373 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.225 and Display P3 reaches 0.254; this color uses 0% of the sRGB chroma available.

CSS snippets

.element {
  color: #737373;
  color: rgb(115 115 115);
  color: hsl(0 0% 45%);
  color: oklch(0.556 0.000 0.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.556 0.000 0.0);
}
/* arbitrary values */
class="text-[#737373] bg-[oklch(0.556_0.000_0.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.4510 0.4510 0.4510); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #737373 calc(l - 0.1) c h); }

Nearby colors

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

• v3 stone-500#78716C
• stone-500#79716B
• v3 zinc-500#71717A
• zinc-500#71717B
• mist-500#67787C
• taupe-500#7C6D67
• v3 gray-500#6B7280
• gray-500#6A7282

Lighter and darker, same hue and chroma

• #858585 · oklch(0.616 0.000 0.0) · ΔL +0.06
• #626262 · oklch(0.496 0.000 0.0) · ΔL −0.06

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