HEX to HSL: #FFFFFF

Also known as: CSS white

#FFFFFF → hsl(0 0% 100%)

Values are shown at full precision, so converting back gives exactly #ffffff. 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. RGB ÷ 255
```
R = 1.0000
G = 1.0000
B = 1.0000
```

2. max, min, Δ

max = 1.0000
min = 1.0000
Δ = max − min = 0.0000

3. L
```
L = (max + min) / 2 = 1.0000 = 100.00%
```

4. S

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

5. H

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

6. HSL
```
hsl(0.00 0.00% 100.00%)
```

All formats

HEX: #ffffff
RGB: rgb(255 255 255)
RGB (legacy): rgb(255, 255, 255)
HSL: hsl(0.00 0.00% 100.00%) → hsl(0 0% 100%)
HWB: hwb(0 100% 0%)
OKLCH: oklch(1.000 0.000 0.0) · oklch(100.0% 0.000 0.0)
OKLab: oklab(1.000 0.000 0.000)
Lab (D50): lab(100.00 0.00 0.00)
LCH (D50): lch(100.00 0.00 0.00)
Display P3: color(display-p3 1.0000 1.0000 1.0000)
Linear sRGB: color(srgb-linear 1.0000 1.0000 1.0000)

Gamut: sRGB and Display P3

#FFFFFF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.000 and Display P3 reaches 0.000; this color uses 0% of the sRGB chroma available.

CSS snippets

.element {
  color: #ffffff;
  color: rgb(255 255 255);
  color: hsl(0 0% 100%);
  color: oklch(1.000 0.000 0.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(1.000 0.000 0.0);
}
/* arbitrary values */
class="text-[#ffffff] bg-[oklch(1.000_0.000_0.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 1.0000 1.0000 1.0000); }
}

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

#FFFFFF · oklch(1.000 0.000 0.0) · ΔL +0.06
#EBEBEB · oklch(0.940 0.000 0.0) · 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?