HSL to HEX: #90EE90

Also known as: CSS lightgreen

hsl(120.00 73.44% 74.90%) → #90EE90

Values are shown at full precision, so converting back gives exactly #90ee90. 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
```
H = 120.00°, S = 73.44%, L = 74.90%
```
2. C
```
C = (1 − |2L − 1|) × S = 0.36867
```

3. X

X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.00000   (H / 60° = 2.0000, sector 2)

4. m
```
m = L − C / 2 = 0.56467
```

5. (R′, G′, B′) + m

(R′, G′, B′) = (0.00000, 0.36867, 0.00000)
R = round((0.00000 + 0.56467) × 255) = 144
G = round((0.36867 + 0.56467) × 255) = 238
B = round((0.00000 + 0.56467) × 255) = 144

6. RGB → HEX
```
#90EE90
```

All formats

HEX: #90ee90
RGB: rgb(144 238 144)
RGB (legacy): rgb(144, 238, 144)
HSL: hsl(120.00 73.44% 74.90%) → hsl(120 73% 75%)
HWB: hwb(120 56% 7%)
OKLCH: oklch(0.868 0.156 144.1) · oklch(86.8% 0.156 144.1)
OKLab: oklab(0.868 -0.126 0.091)
Lab (D50): lab(86.60 -43.02 36.39)
LCH (D50): lch(86.60 56.35 139.77)
Display P3: color(display-p3 0.6509 0.9241 0.6018)
Linear sRGB: color(srgb-linear 0.2789 0.8550 0.2789)

Gamut: sRGB and Display P3

#90EE90 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.281 and Display P3 reaches 0.315; this color uses 56% of the sRGB chroma available.

CSS snippets

.element {
  color: #90ee90;
  color: rgb(144 238 144);
  color: hsl(120 73% 75%);
  color: oklch(0.868 0.156 144.1);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.868 0.156 144.1);
}
/* arbitrary values */
class="text-[#90ee90] bg-[oklch(0.868_0.156_144.1)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.6509 0.9241 0.6018); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #90ee90 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

#A4FFA3 · oklch(0.928 0.156 144.1) · ΔL +0.06
#7DDA7D · oklch(0.808 0.156 144.1) · 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?