HSL to HEX: #9F1239

Result

Values are shown at full precision, so converting back gives exactly #9f1239. 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. input

   H = 343.40°, S = 79.66%, L = 34.71%

2. 2. C

   C = (1 − |2L − 1|) × S = 0.55300

3. 3. X

   X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.15300   (H / 60° = 5.7233, sector 5)

4. 4. m

   m = L − C / 2 = 0.07060

5. 5. (R′, G′, B′) + m

   (R′, G′, B′) = (0.55300, 0.00000, 0.15300)
   R = round((0.55300 + 0.07060) × 255) = 159
   G = round((0.00000 + 0.07060) × 255) = 18
   B = round((0.15300 + 0.07060) × 255) = 57

6. 6. RGB → HEX

   #9F1239

All formats

HEX

#9f1239

RGB

rgb(159 18 57)

RGB (legacy)

rgb(159, 18, 57)

HSL

hsl(343.40 79.66% 34.71%) → hsl(343 80% 35%)

HWB

hwb(343 7% 38%)

OKLCH

oklch(0.455 0.171 13.7) · oklch(45.5% 0.171 13.7)

OKLab

oklab(0.455 0.166 0.041)

Lab (D50)

lab(34.79 55.45 18.07)

LCH (D50)

lch(34.79 58.32 18.05)

Display P3

color(display-p3 0.5714 0.1398 0.2310)

Linear sRGB

color(srgb-linear 0.3467 0.0060 0.0409)

Gamut: sRGB and Display P3

#9F1239 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.182 and Display P3 reaches 0.205; this color uses 94% of the sRGB chroma available.

CSS snippets

.element {
  color: #9f1239;
  color: rgb(159 18 57);
  color: hsl(343 80% 35%);
  color: oklch(0.455 0.171 13.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.455 0.171 13.7);
}
/* arbitrary values */
class="text-[#9f1239] bg-[oklch(0.455_0.171_13.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.5714 0.1398 0.2310); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #9f1239 calc(l - 0.1) c h); }

Nearby colors

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

• rose-800#A50036
• v3 pink-800#9D174D
• pink-800#A3004C
• v3 red-800#991B1B
• red-800#9F0712
• brown#A52A2A
• rose-900#8B0836
• v3 rose-900#881337

Lighter and darker, same hue and chroma

• #B42C49 · oklch(0.515 0.171 13.7) · ΔL +0.06
• #8A0029 · oklch(0.395 0.171 13.7) · ΔL −0.06

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