OKLCH to HEX: #EC003F

Result

Values are shown at full precision, so converting back gives exactly #ec003f. 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(0.59679 0.23956 19.695)

2. 2. OKLCH → Oklab

   a = C·cos H = 0.22555
   b = C·sin H = 0.08073

3. 3. Oklab → LMS′

   l′ = L + 0.3963·a + 0.2158·b = 0.703605
   m′ = L − 0.1056·a − 0.0639·b = 0.567826
   s′ = L − 0.0895·a − 1.2915·b = 0.472339

4. 4. cube

   l = 0.703605³ = 0.348327
   m = 0.567826³ = 0.183082
   s = 0.472339³ = 0.105381

5. 5. LMS → linear sRGB

   R = 4.0767·l − 3.3077·m + 0.2310·s = 0.838797
   G = −1.2684·l + 2.6098·m − 0.3413·s = 0.000000
   B = −0.0042·l − 0.7034·m + 1.7076·s = 0.049705

6. 6. linear → sRGB, × 255

   R = 0.92549 × 255 = 236.00 → 236
   G = 0.00000 × 255 = 0.00 → 0
   B = 0.24706 × 255 = 63.00 → 63

7. 7. RGB → HEX

   #EC003F

All formats

HEX

#ec003f

RGB

rgb(236 0 63)

RGB (legacy)

rgb(236, 0, 63)

HSL

hsl(343.98 100.00% 46.27%) → hsl(344 100% 46%)

HWB

hwb(344 0% 7%)

OKLCH

oklch(0.597 0.240 19.7) · oklch(59.7% 0.240 19.7)

OKLab

oklab(0.597 0.226 0.081)

Lab (D50)

lab(50.65 77.01 37.86)

LCH (D50)

lch(50.65 85.81 26.18)

Display P3

color(display-p3 0.8488 0.1823 0.2708)

Linear sRGB

color(srgb-linear 0.8388 0.0000 0.0497)

Gamut: sRGB and Display P3

#EC003F is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.240 and Display P3 reaches 0.270; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ec003f;
  color: rgb(236 0 63);
  color: hsl(344 100% 46%);
  color: oklch(0.597 0.240 19.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.597 0.240 19.7);
}
/* arbitrary values */
class="text-[#ec003f] bg-[oklch(0.597_0.240_19.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.8488 0.1823 0.2708); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ec003f calc(l - 0.1) c h); }

Nearby colors

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

• v3 rose-600#E11D48
• crimson#DC143C
• red-600#E7000B
• v3 red-600#DC2626
• red-500#FB2C36
• rose-500#FF2056
• red#FF0000
• v3 rose-500#F43F5E

Lighter and darker, same hue and chroma

• #FF3051 · oklch(0.657 0.240 19.7) · ΔL +0.06
• #D6002D · oklch(0.537 0.240 19.7) · ΔL −0.06

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