HSL to HEX: #FFFF00

Also known as: CSS yellow

hsl(60.00 100.00% 50.00%) → #FFFF00

Values are shown at full precision, so converting back gives exactly #ffff00. 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 = 60.00°, 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|) = 1.00000   (H / 60° = 1.0000, sector 1)

4. m
```
m = L − C / 2 = 0.00000
```

5. (R′, G′, B′) + m

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

6. RGB → HEX
```
#FFFF00
```

All formats

HEX: #ffff00
RGB: rgb(255 255 0)
RGB (legacy): rgb(255, 255, 0)
HSL: hsl(60.00 100.00% 50.00%) → hsl(60 100% 50%)
HWB: hwb(60 0% 0%)
OKLCH: oklch(0.968 0.211 109.8) · oklch(96.8% 0.211 109.8)
OKLab: oklab(0.968 -0.071 0.199)
Lab (D50): lab(97.61 -15.75 93.39)
LCH (D50): lch(97.61 94.71 99.57)
Display P3: color(display-p3 1.0000 1.0000 0.3309)
Linear sRGB: color(srgb-linear 1.0000 1.0000 0.0000)

Gamut: sRGB and Display P3

#FFFF00 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.211 and Display P3 reaches 0.211; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ffff00;
  color: rgb(255 255 0);
  color: hsl(60 100% 50%);
  color: oklch(0.968 0.211 109.8);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.968 0.211 109.8);
}
/* arbitrary values */
class="text-[#ffff00] bg-[oklch(0.968_0.211_109.8)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 1.0000 1.0000 0.3309); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ffff00 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

#FFFF2A · oklch(1.000 0.211 109.8) · ΔL +0.06
#EBEB00 · oklch(0.908 0.211 109.8) · 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?