HEX to HSL: #A684FF

Also known as: Tailwind violet-400

#A684FF → hsl(257 100% 76%)

Values are shown at full precision, so converting back gives exactly #a684ff. 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 = 0.6510
G = 0.5176
B = 1.0000
```

2. max, min, Δ

max = 1.0000
min = 0.5176
Δ = max − min = 0.4824

3. L
```
L = (max + min) / 2 = 0.7588 = 75.88%
```

4. S

S = Δ / (1 − |2L − 1|) = 1.0000 = 100.00%

5. H

max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.6510 − 0.5176) / 0.4824 + 4) = 256.59°

6. HSL
```
hsl(256.59 100.00% 75.88%)
```

All formats

HEX: #a684ff
RGB: rgb(166 132 255)
RGB (legacy): rgb(166, 132, 255)
HSL: hsl(256.59 100.00% 75.88%) → hsl(257 100% 76%)
HWB: hwb(257 52% 0%)
OKLCH: oklch(0.699 0.176 294.1) · oklch(69.9% 0.176 294.1)
OKLab: oklab(0.699 0.072 -0.161)
Lab (D50): lab(62.58 33.63 -57.54)
LCH (D50): lch(62.58 66.65 300.30)
Display P3: color(display-p3 0.6299 0.5228 0.9703)
Linear sRGB: color(srgb-linear 0.3813 0.2307 1.0000)

Gamut: sRGB and Display P3

#A684FF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.176 and Display P3 reaches 0.191; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #a684ff;
  color: rgb(166 132 255);
  color: hsl(257 100% 76%);
  color: oklch(0.699 0.176 294.1);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.699 0.176 294.1);
}
/* arbitrary values */
class="text-[#a684ff] bg-[oklch(0.699_0.176_294.1)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.6299 0.5228 0.9703); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #a684ff 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

#B897FF · oklch(0.759 0.176 294.1) · ΔL +0.06
#9471EA · oklch(0.639 0.176 294.1) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

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Guides: What is OKLCH?