OKLCH to HEX: #66CDAA

Also known as: CSS mediumaquamarine

oklch(0.77669 0.10985 168.824) → #66CDAA

Values are shown at full precision, so converting back gives exactly #66cdaa. 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. input
```
oklch(0.77669 0.10985 168.824)
```

2. OKLCH → Oklab

a = C·cos H = -0.10777
b = C·sin H = 0.02129

3. Oklab → LMS′

l′ = L + 0.3963·a + 0.2158·b = 0.738573
m′ = L − 0.1056·a − 0.0639·b = 0.786706
s′ = L − 0.0895·a − 1.2915·b = 0.758836

4. cube

l = 0.738573³ = 0.402884
m = 0.786706³ = 0.486898
s = 0.758836³ = 0.436962

5. LMS → linear sRGB

R = 4.0767·l − 3.3077·m + 0.2310·s = 0.132859
G = −1.2684·l + 2.6098·m − 0.3413·s = 0.610510
B = −0.0042·l − 0.7034·m + 1.7076·s = 0.401978

6. linear → sRGB, × 255

R = 0.39999 × 255 = 102.00 → 102
G = 0.80393 × 255 = 205.00 → 205
B = 0.66667 × 255 = 170.00 → 170

7. RGB → HEX
```
#66CDAA
```

All formats

HEX: #66cdaa
RGB: rgb(102 205 170)
RGB (legacy): rgb(102, 205, 170)
HSL: hsl(159.61 50.74% 60.20%) → hsl(160 51% 60%)
HWB: hwb(160 40% 20%)
OKLCH: oklch(0.777 0.110 168.8) · oklch(77.7% 0.110 168.8)
OKLab: oklab(0.777 -0.108 0.021)
Lab (D50): lab(75.55 -37.75 7.83)
LCH (D50): lch(75.55 38.56 168.28)
Display P3: color(display-p3 0.5039 0.7946 0.6745)
Linear sRGB: color(srgb-linear 0.1329 0.6105 0.4020)

Gamut: sRGB and Display P3

#66CDAA is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.156 and Display P3 reaches 0.213; this color uses 71% of the sRGB chroma available.

CSS snippets

.element {
  color: #66cdaa;
  color: rgb(102 205 170);
  color: hsl(160 51% 60%);
  color: oklch(0.777 0.110 168.8);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.777 0.110 168.8);
}
/* arbitrary values */
class="text-[#66cdaa] bg-[oklch(0.777_0.110_168.8)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.5039 0.7946 0.6745); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #66cdaa 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

#7AE1BD · oklch(0.837 0.110 168.8) · ΔL +0.06
#51BA97 · oklch(0.717 0.110 168.8) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

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Guides: What is OKLCH?