HEX to HSL: #EFF6FF

Also known as: Tailwind blue-50, Tailwind v3 blue-50

#EFF6FF → hsl(214 100% 97%)

Values are shown at full precision, so converting back gives exactly #eff6ff. 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 = 0.9373
G = 0.9647
B = 1.0000
```

2. max, min, Δ

max = 1.0000
min = 0.9373
Δ = max − min = 0.0627

3. L
```
L = (max + min) / 2 = 0.9686 = 96.86%
```

4. S

S = Δ / (1 − |2L − 1|) = 1.0000 = 100.00%

5. H

max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.9373 − 0.9647) / 0.0627 + 4) = 213.75°

6. HSL
```
hsl(213.75 100.00% 96.86%)
```

All formats

HEX: #eff6ff
RGB: rgb(239 246 255)
RGB (legacy): rgb(239, 246, 255)
HSL: hsl(213.75 100.00% 96.86%) → hsl(214 100% 97%)
HWB: hwb(214 94% 0%)
OKLCH: oklch(0.970 0.014 254.6) · oklch(97.0% 0.014 254.6)
OKLab: oklab(0.970 -0.004 -0.014)
Lab (D50): lab(96.55 -1.16 -5.18)
LCH (D50): lch(96.55 5.31 257.37)
Display P3: color(display-p3 0.9422 0.9638 0.9965)
Linear sRGB: color(srgb-linear 0.8632 0.9216 1.0000)

Gamut: sRGB and Display P3

#EFF6FF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.014 and Display P3 reaches 0.016; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #eff6ff;
  color: rgb(239 246 255);
  color: hsl(214 100% 97%);
  color: oklch(0.970 0.014 254.6);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.970 0.014 254.6);
}
/* arbitrary values */
class="text-[#eff6ff] bg-[oklch(0.970_0.014_254.6)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9422 0.9638 0.9965); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #eff6ff 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

#F9FFFF · oklch(1.000 0.014 254.6) · ΔL +0.06
#DBE2EB · oklch(0.910 0.014 254.6) · 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?