HSL to HEX: #7FFF00

Also known as: CSS chartreuse

hsl(90.12 100.00% 50.00%) → #7FFF00

Values are shown at full precision, so converting back gives exactly #7fff00. 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 = 90.12°, S = 100.00%, L = 50.00%
```
2. C
```
C = (1 − |2L − 1|) × S = 1.00000
```

3. X

X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.49800   (H / 60° = 1.5020, sector 1)

4. m
```
m = L − C / 2 = 0.00000
```

5. (R′, G′, B′) + m

(R′, G′, B′) = (0.49800, 1.00000, 0.00000)
R = round((0.49800 + 0.00000) × 255) = 127
G = round((1.00000 + 0.00000) × 255) = 255
B = round((0.00000 + 0.00000) × 255) = 0

6. RGB → HEX
```
#7FFF00
```

All formats

HEX: #7fff00
RGB: rgb(127 255 0)
RGB (legacy): rgb(127, 255, 0)
HSL: hsl(90.12 100.00% 50.00%) → hsl(90 100% 50%)
HWB: hwb(90 0% 0%)
OKLCH: oklch(0.890 0.265 136.0) · oklch(89.0% 0.265 136.0)
OKLab: oklab(0.890 -0.191 0.184)
Lab (D50): lab(90.05 -61.49 83.86)
LCH (D50): lch(90.05 103.98 126.25)
Display P3: color(display-p3 0.6279 0.9884 0.3056)
Linear sRGB: color(srgb-linear 0.2122 1.0000 0.0000)

Gamut: sRGB and Display P3

#7FFF00 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.265 and Display P3 reaches 0.295; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #7fff00;
  color: rgb(127 255 0);
  color: hsl(90 100% 50%);
  color: oklch(0.890 0.265 136.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.890 0.265 136.0);
}
/* arbitrary values */
class="text-[#7fff00] bg-[oklch(0.890_0.265_136.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.6279 0.9884 0.3056); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #7fff00 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

#93FF39 · oklch(0.950 0.265 136.0) · ΔL +0.06
#6BEA00 · oklch(0.830 0.265 136.0) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

All converters →

Guides: What is OKLCH?