HSL to HEX: #99A1AF

Result

Values are shown at full precision, so converting back gives exactly #99a1af. 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 = 218.18°, S = 12.09%, L = 64.31%

2. 2. C

   C = (1 − |2L − 1|) × S = 0.08630

3. 3. X

   X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.03138   (H / 60° = 3.6363, sector 3)

4. 4. m

   m = L − C / 2 = 0.59995

5. 5. (R′, G′, B′) + m

   (R′, G′, B′) = (0.00000, 0.03138, 0.08630)
   R = round((0.00000 + 0.59995) × 255) = 153
   G = round((0.03138 + 0.59995) × 255) = 161
   B = round((0.08630 + 0.59995) × 255) = 175

6. 6. RGB → HEX

   #99A1AF

All formats

HEX

#99a1af

RGB

rgb(153 161 175)

RGB (legacy)

rgb(153, 161, 175)

HSL

hsl(218.18 12.09% 64.31%) → hsl(218 12% 64%)

HWB

hwb(218 60% 31%)

OKLCH

oklch(0.707 0.022 261.7) · oklch(70.7% 0.022 261.7)

OKLab

oklab(0.707 -0.003 -0.022)

Lab (D50)

lab(65.93 -0.79 -8.32)

LCH (D50)

lch(65.93 8.35 264.59)

Display P3

color(display-p3 0.6057 0.6304 0.6811)

Linear sRGB

color(srgb-linear 0.3185 0.3564 0.4287)

Gamut: sRGB and Display P3

#99A1AF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.153 and Display P3 reaches 0.165; this color uses 15% of the sRGB chroma available.

CSS snippets

.element {
  color: #99a1af;
  color: rgb(153 161 175);
  color: hsl(218 12% 64%);
  color: oklch(0.707 0.022 261.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.707 0.022 261.7);
}
/* arbitrary values */
class="text-[#99a1af] bg-[oklch(0.707_0.022_261.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.6057 0.6304 0.6811); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #99a1af calc(l - 0.1) c h); }

Nearby colors

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

• v3 gray-400#9CA3AF
• zinc-400#9F9FA9
• v3 zinc-400#A1A1AA
• v3 slate-400#94A3B8
• slate-400#90A1B9
• mauve-400#A89EA9
• neutral-400#A1A1A1
• mist-400#9CA8AB

Lighter and darker, same hue and chroma

• #ACB4C2 · oklch(0.767 0.022 261.7) · ΔL +0.06
• #878F9C · oklch(0.647 0.022 261.7) · ΔL −0.06

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