RGB to HEX: #00598A

Result

Values are shown at full precision, so converting back gives exactly #00598a. 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. 1. base 10 → base 16

   R = 0 = 0×16 + 0 → 00
   G = 89 = 5×16 + 9 → 59
   B = 138 = 8×16 + 10 → 8A

2. 2. pairs → HEX

   00 59 8A → #00598A

All formats

HEX

#00598a

RGB

rgb(0 89 138)

RGB (legacy)

rgb(0, 89, 138)

HSL

hsl(201.30 100.00% 27.06%) → hsl(201 100% 27%)

HWB

hwb(201 0% 46%)

OKLCH

oklch(0.445 0.107 242.8) · oklch(44.5% 0.107 242.8)

OKLab

oklab(0.445 -0.049 -0.095)

Lab (D50)

lab(35.40 -8.29 -34.21)

LCH (D50)

lch(35.40 35.20 256.37)

Display P3

color(display-p3 0.1416 0.3434 0.5257)

Linear sRGB

color(srgb-linear 0.0000 0.0999 0.2542)

Gamut: sRGB and Display P3

#00598A is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.107 and Display P3 reaches 0.140; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #00598a;
  color: rgb(0 89 138);
  color: hsl(201 100% 27%);
  color: oklch(0.445 0.107 242.8);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.445 0.107 242.8);
}
/* arbitrary values */
class="text-[#00598a] bg-[oklch(0.445_0.107_242.8)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.1416 0.3434 0.5257); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #00598a calc(l - 0.1) c h); }

Nearby colors

Closest colors in the Tailwind and CSS named palettes (OKLab distance).

• v3 sky-800#075985
• cyan-800#005F78
• v3 cyan-800#155E75
• v3 sky-700#0369A1
• sky-900#024A70
• v3 sky-900#0C4A6E
• sky-700#0069A8
• cyan-900#104E64

Lighter and darker, same hue and chroma

• #1E6B9D · oklch(0.505 0.107 242.8) · ΔL +0.06
• #004878 · oklch(0.385 0.107 242.8) · ΔL −0.06

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