HSL to HEX: #A78BFA

Also known as: Tailwind v3 violet-400

hsl(255.14 91.74% 76.27%) → #A78BFA

Values are shown at full precision, so converting back gives exactly #a78bfa. 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. input
```
H = 255.14°, S = 91.74%, L = 76.27%
```
2. C
```
C = (1 − |2L − 1|) × S = 0.43540
```

3. X

X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.10987   (H / 60° = 4.2523, sector 4)

4. m
```
m = L − C / 2 = 0.54500
```

5. (R′, G′, B′) + m

(R′, G′, B′) = (0.10987, 0.00000, 0.43540)
R = round((0.10987 + 0.54500) × 255) = 167
G = round((0.00000 + 0.54500) × 255) = 139
B = round((0.43540 + 0.54500) × 255) = 250

6. RGB → HEX
```
#A78BFA
```

All formats

HEX: #a78bfa
RGB: rgb(167 139 250)
RGB (legacy): rgb(167, 139, 250)
HSL: hsl(255.14 91.74% 76.27%) → hsl(255 92% 76%)
HWB: hwb(255 55% 2%)
OKLCH: oklch(0.709 0.159 293.5) · oklch(70.9% 0.159 293.5)
OKLab: oklab(0.709 0.064 -0.146)
Lab (D50): lab(64.08 29.18 -52.44)
LCH (D50): lch(64.08 60.01 299.10)
Display P3: color(display-p3 0.6372 0.5492 0.9527)
Linear sRGB: color(srgb-linear 0.3864 0.2582 0.9560)

Gamut: sRGB and Display P3

#A78BFA is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.169 and Display P3 reaches 0.183; this color uses 94% of the sRGB chroma available.

CSS snippets

.element {
  color: #a78bfa;
  color: rgb(167 139 250);
  color: hsl(255 92% 76%);
  color: oklch(0.709 0.159 293.5);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.709 0.159 293.5);
}
/* arbitrary values */
class="text-[#a78bfa] bg-[oklch(0.709_0.159_293.5)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.6372 0.5492 0.9527); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #a78bfa 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

#BA9EFF · oklch(0.769 0.159 293.5) · ΔL +0.06
#9578E5 · oklch(0.649 0.159 293.5) · 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?