HEX to OKLCH: #ECFCCB

Also known as: Tailwind v3 lime-100

#ECFCCB → oklch(0.967 0.066 122.3)

Values are shown at full precision, so converting back gives exactly #ecfccb. 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. sRGB → linear

R: 236/255 = 0.92549 → 0.838799  (((x + 0.055) / 1.055)^2.4)
G: 252/255 = 0.98824 → 0.973445  (((x + 0.055) / 1.055)^2.4)
B: 203/255 = 0.79608 → 0.597202  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.898585
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.904506
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.724530

3. cube root

l′ = ∛0.898585 = 0.964983
m′ = ∛0.904506 = 0.967098
s′ = ∛0.724530 = 0.898157

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.96693
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.03525
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.05570

5. Oklab → OKLCH

C = √(a² + b²) = 0.06591
H = atan2(b, a) = 122.328°
L = 0.96693

6. OKLCH

oklch(0.96693 0.06591 122.328)
rounded: oklch(0.967 0.066 122.3)

All formats

HEX: #ecfccb
RGB: rgb(236 252 203)
RGB (legacy): rgb(236, 252, 203)
HSL: hsl(79.59 89.09% 89.22%) → hsl(80 89% 89%)
HWB: hwb(80 80% 1%)
OKLCH: oklch(0.967 0.066 122.3) · oklch(96.7% 0.066 122.3)
OKLab: oklab(0.967 -0.035 0.056)
Lab (D50): lab(96.85 -11.53 21.71)
LCH (D50): lch(96.85 24.59 117.97)
Display P3: color(display-p3 0.9370 0.9862 0.8144)
Linear sRGB: color(srgb-linear 0.8388 0.9734 0.5972)

Gamut: sRGB and Display P3

#ECFCCB is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.094 and Display P3 reaches 0.101; this color uses 70% of the sRGB chroma available.

CSS snippets

.element {
  color: #ecfccb;
  color: rgb(236 252 203);
  color: hsl(80 89% 89%);
  color: oklch(0.967 0.066 122.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.967 0.066 122.3);
}
/* arbitrary values */
class="text-[#ecfccb] bg-[oklch(0.967_0.066_122.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9370 0.9862 0.8144); }
}

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

Nearby colors

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

Lighter and darker, same hue and chroma

#F7FFD6 · oklch(1.000 0.066 122.3) · ΔL +0.06
#D8E8B8 · oklch(0.907 0.066 122.3) · ΔL −0.06

Open in the studio

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Guides: What is OKLCH?