HEX to OKLCH: #475569

Result

Values are shown at full precision, so converting back gives exactly #475569. 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. sRGB → linear

   R: 71/255 = 0.27843 → 0.063010  (((x + 0.055) / 1.055)^2.4)
   G: 85/255 = 0.33333 → 0.090842  (((x + 0.055) / 1.055)^2.4)
   B: 105/255 = 0.41176 → 0.141263  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.081963
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.090359
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.120149

3. 3. cube root

   l′ = ∛0.081963 = 0.434383
   m′ = ∛0.090359 = 0.448736
   s′ = ∛0.120149 = 0.493446

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.44553
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.00824
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.03653

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.03745
   H = atan2(b, a) = 257.281°
   L = 0.44553

6. 6. OKLCH

   oklch(0.44553 0.03745 257.281)
   rounded: oklch(0.446 0.037 257.3)

All formats

HEX

#475569

RGB

rgb(71 85 105)

RGB (legacy)

rgb(71, 85, 105)

HSL

hsl(215.29 19.32% 34.51%) → hsl(215 19% 35%)

HWB

hwb(215 28% 59%)

OKLCH

oklch(0.446 0.037 257.3) · oklch(44.6% 0.037 257.3)

OKLab

oklab(0.446 -0.008 -0.037)

Lab (D50)

lab(35.54 -1.67 -13.49)

LCH (D50)

lch(35.54 13.59 262.92)

Display P3

color(display-p3 0.2891 0.3317 0.4048)

Linear sRGB

color(srgb-linear 0.0630 0.0908 0.1413)

Gamut: sRGB and Display P3

#475569 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.160 and Display P3 reaches 0.203; this color uses 23% of the sRGB chroma available.

CSS snippets

.element {
  color: #475569;
  color: rgb(71 85 105);
  color: hsl(215 19% 35%);
  color: oklch(0.446 0.037 257.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.446 0.037 257.3);
}
/* arbitrary values */
class="text-[#475569] bg-[oklch(0.446_0.037_257.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2891 0.3317 0.4048); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #475569 calc(l - 0.1) c h); }

Nearby colors

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

• slate-600#45556C
• gray-600#4A5565
• v3 gray-600#4B5563
• zinc-600#52525C
• v3 zinc-600#52525B
• mist-600#4B585B
• mauve-600#594C5B
• neutral-600#525252

Lighter and darker, same hue and chroma

• #57667B · oklch(0.506 0.037 257.3) · ΔL +0.06
• #374558 · oklch(0.386 0.037 257.3) · ΔL −0.06

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