HSL to HEX: #FFB900

Result

Values are shown at full precision, so converting back gives exactly #ffb900. 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 = 43.53°, S = 100.00%, L = 50.00%

2. 2. C

   C = (1 − |2L − 1|) × S = 1.00000

3. 3. X

   X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.72550   (H / 60° = 0.7255, sector 0)

4. 4. m

   m = L − C / 2 = 0.00000

5. 5. (R′, G′, B′) + m

   (R′, G′, B′) = (1.00000, 0.72550, 0.00000)
   R = round((1.00000 + 0.00000) × 255) = 255
   G = round((0.72550 + 0.00000) × 255) = 185
   B = round((0.00000 + 0.00000) × 255) = 0

6. 6. RGB → HEX

   #FFB900

All formats

HEX

#ffb900

RGB

rgb(255 185 0)

RGB (legacy)

rgb(255, 185, 0)

HSL

hsl(43.53 100.00% 50.00%) → hsl(44 100% 50%)

HWB

hwb(44 0% 0%)

OKLCH

oklch(0.829 0.171 81.0) · oklch(82.9% 0.171 81.0)

OKLab

oklab(0.829 0.027 0.169)

Lab (D50)

lab(80.20 17.59 81.90)

LCH (D50)

lch(80.20 83.77 77.88)

Display P3

color(display-p3 0.9587 0.7368 0.2533)

Linear sRGB

color(srgb-linear 1.0000 0.4851 0.0000)

Gamut: sRGB and Display P3

#FFB900 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.171 and Display P3 reaches 0.197; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ffb900;
  color: rgb(255 185 0);
  color: hsl(44 100% 50%);
  color: oklch(0.829 0.171 81.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.829 0.171 81.0);
}
/* arbitrary values */
class="text-[#ffb900] bg-[oklch(0.829_0.171_81.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9587 0.7368 0.2533); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ffb900 calc(l - 0.1) c h); }

Nearby colors

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

• v3 amber-400#FBBF24
• yellow-500#F0B100
• yellow-400#FDC700
• v3 yellow-500#EAB308
• v3 yellow-400#FACC15
• orange#FFA500
• orange-300#FFB86A
• amber-300#FFD230

Lighter and darker, same hue and chroma

• #FFCD34 · oklch(0.889 0.171 81.0) · ΔL +0.06
• #EBA600 · oklch(0.769 0.171 81.0) · ΔL −0.06

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