RGB to HEX: #1E2939

Also known as: Tailwind gray-800

rgb(30 41 57) → #1E2939

Values are shown at full precision, so converting back gives exactly #1e2939. 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. base 10 → base 16

R = 30 = 1×16 + 14 → 1E
G = 41 = 2×16 + 9 → 29
B = 57 = 3×16 + 9 → 39

2. pairs → HEX
```
1E 29 39 → #1E2939
```

All formats

HEX: #1e2939
RGB: rgb(30 41 57)
RGB (legacy): rgb(30, 41, 57)
HSL: hsl(215.56 31.03% 17.06%) → hsl(216 31% 17%)
HWB: hwb(216 12% 78%)
OKLCH: oklch(0.278 0.034 257.7) · oklch(27.8% 0.034 257.7)
OKLab: oklab(0.278 -0.007 -0.033)
Lab (D50): lab(16.14 -1.02 -11.97)
LCH (D50): lch(16.14 12.01 265.13)
Display P3: color(display-p3 0.1264 0.1595 0.2183)
Linear sRGB: color(srgb-linear 0.0130 0.0222 0.0409)

Gamut: sRGB and Display P3

#1E2939 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.102 and Display P3 reaches 0.129; this color uses 33% of the sRGB chroma available.

CSS snippets

.element {
  color: #1e2939;
  color: rgb(30 41 57);
  color: hsl(216 31% 17%);
  color: oklch(0.278 0.034 257.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.278 0.034 257.7);
}
/* arbitrary values */
class="text-[#1e2939] bg-[oklch(0.278_0.034_257.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.1264 0.1595 0.2183); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #1e2939 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

#2D3849 · oklch(0.338 0.034 257.7) · ΔL +0.06
#101B2A · oklch(0.218 0.034 257.7) · 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?