OKLCH to HEX: #FF8904

Result

Values are shown at full precision, so converting back gives exactly #ff8904. 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

   oklch(0.74585 0.18024 56.732)

2. 2. OKLCH → Oklab

   a = C·cos H = 0.09887
   b = C·sin H = 0.15070

3. 3. Oklab → LMS′

   l′ = L + 0.3963·a + 0.2158·b = 0.817558
   m′ = L − 0.1056·a − 0.0639·b = 0.725790
   s′ = L − 0.0895·a − 1.2915·b = 0.542374

4. 4. cube

   l = 0.817558³ = 0.546458
   m = 0.725790³ = 0.382325
   s = 0.542374³ = 0.159550

5. 5. LMS → linear sRGB

   R = 4.0767·l − 3.3077·m + 0.2310·s = 0.999996
   G = −1.2684·l + 2.6098·m − 0.3413·s = 0.250171
   B = −0.0042·l − 0.7034·m + 1.7076·s = 0.001222

6. 6. linear → sRGB, × 255

   R = 1.00000 × 255 = 255.00 → 255
   G = 0.53727 × 255 = 137.00 → 137
   B = 0.01579 × 255 = 4.03 → 4

7. 7. RGB → HEX

   #FF8904

All formats

HEX

#ff8904

RGB

rgb(255 137 4)

RGB (legacy)

rgb(255, 137, 4)

HSL

hsl(31.79 100.00% 50.78%) → hsl(32 100% 51%)

HWB

hwb(32 2% 0%)

OKLCH

oklch(0.746 0.180 56.7) · oklch(74.6% 0.180 56.7)

OKLab

oklab(0.746 0.099 0.151)

Lab (D50)

lab(69.60 41.25 75.23)

LCH (D50)

lch(69.60 85.80 61.27)

Display P3

color(display-p3 0.9390 0.5611 0.2100)

Linear sRGB

color(srgb-linear 1.0000 0.2502 0.0012)

Gamut: sRGB and Display P3

#FF8904 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.180 and Display P3 reaches 0.207; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ff8904;
  color: rgb(255 137 4);
  color: hsl(32 100% 51%);
  color: oklch(0.746 0.180 56.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.746 0.180 56.7);
}
/* arbitrary values */
class="text-[#ff8904] bg-[oklch(0.746_0.180_56.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9390 0.5611 0.2100); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ff8904 calc(l - 0.1) c h); }

Nearby colors

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

• darkorange#FF8C00
• v3 orange-400#FB923C
• amber-500#FE9A00
• v3 amber-500#F59E0B
• v3 orange-500#F97316
• coral#FF7F50
• orange#FFA500
• orange-500#FF6900

Lighter and darker, same hue and chroma

• #FF9C30 · oklch(0.806 0.180 56.7) · ΔL +0.06
• #EA7600 · oklch(0.686 0.180 56.7) · ΔL −0.06

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