HEX to HSL: #FEF9C3

Also known as: Tailwind v3 yellow-100

#FEF9C3 → hsl(55 97% 88%)

Values are shown at full precision, so converting back gives exactly #fef9c3. 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. RGB ÷ 255
```
R = 0.9961
G = 0.9765
B = 0.7647
```

2. max, min, Δ

max = 0.9961
min = 0.7647
Δ = max − min = 0.2314

3. L
```
L = (max + min) / 2 = 0.8804 = 88.04%
```

4. S

S = Δ / (1 − |2L − 1|) = 0.9672 = 96.72%

5. H

max is R → H = 60° × (((G − B) / Δ) mod 6) = 60° × (((0.9765 − 0.7647) / 0.2314) mod 6) = 54.92°

6. HSL
```
hsl(54.92 96.72% 88.04%)
```

All formats

HEX: #fef9c3
RGB: rgb(254 249 195)
RGB (legacy): rgb(254, 249, 195)
HSL: hsl(54.92 96.72% 88.04%) → hsl(55 97% 88%)
HWB: hwb(55 76% 0%)
OKLCH: oklch(0.973 0.069 103.2) · oklch(97.3% 0.069 103.2)
OKLab: oklab(0.973 -0.016 0.068)
Lab (D50): lab(97.34 -4.44 26.68)
LCH (D50): lch(97.34 27.04 99.44)
Display P3: color(display-p3 0.9926 0.9771 0.7872)
Linear sRGB: color(srgb-linear 0.9911 0.9473 0.5457)

Gamut: sRGB and Display P3

#FEF9C3 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.077 and Display P3 reaches 0.087; this color uses 90% of the sRGB chroma available.

CSS snippets

.element {
  color: #fef9c3;
  color: rgb(254 249 195);
  color: hsl(55 97% 88%);
  color: oklch(0.973 0.069 103.2);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.973 0.069 103.2);
}
/* arbitrary values */
class="text-[#fef9c3] bg-[oklch(0.973_0.069_103.2)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9926 0.9771 0.7872); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #fef9c3 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

#FFFFCC · oklch(1.000 0.069 103.2) · ΔL +0.06
#EAE5B0 · oklch(0.913 0.069 103.2) · 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?