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Color#175d64rgb(23, 93, 100) · blue

#175d64 color

Values, variations, harmonies, an accessible palette and ready-to-paste CSS for #175d64.

Color values

The same color written in every notation you are likely to need. Click any row to copy it.

What HEX means

#175d64 packs three channels into hexadecimal pairs from 00 to FF: 17 red, 5d green, 64 blue.

What RGB means

Red 23, green 93, blue 100 — each from 0 to 255. It is the same color as the hex above, just in decimal.

What HSL means

Hue 185° (blue), saturation 63%, lightness 24%. HSL is handy when you want the same hue a little lighter or less saturated.

Why OKLCH

OKLCH is a perceptual space — changing its lightness (44.0%) matches how your eye reads brightness far better than HSL, which is why the palette below is generated in it.

Accessibility & contrast

WCAG requires at least 4.5:1 for normal text and 3:1 for large text at level AA. Use this to decide whether white or black text belongs on this color.

AaThis text is readable
White text7.54:1
AA AAA AA Large
AaThis text is readable
Black text2.79:1
AA AAA AA Large

Closest accessible alternative

Nudged in lightness to reach 4.5:1 while keeping the hue as close as possible.

Aa

For black text

#3f8087

4.65:1

UI preview

How this color behaves in a real interface, not just as a square.

Badge

A paragraph with a themed link inside it.

Information

An alert accented with this color.

Progress

Tints & shades

A tint mixes the color toward white; a shade mixes it toward black. Click any swatch to open it.

Color harmonies

Schemes built by rotating the hue around the color wheel — the starting point for a coherent palette.

Complementary

Opposite on the wheel — maximum contrast.

Analogous

Neighbours on the wheel — calm and cohesive.

Triadic

Three hues 120° apart — vivid but balanced.

Split complementary

Softer than a straight complement.

Tetradic

Four hues — enough for a design system.

Palette generator

A Tailwind-style 50–950 ramp anchored on this color at step 500, generated in OKLCH so the steps feel evenly spaced.

:root {
  --primary-50: #eafbfd;
  --primary-100: #d8f3f6;
  --primary-200: #bbe1e6;
  --primary-300: #9acbd1;
  --primary-400: #72adb4;
  --primary-500: #175d64;
  --primary-600: #337279;
  --primary-700: #205c63;
  --primary-800: #124a4f;
  --primary-900: #0b3b40;
  --primary-950: #062124;
}

Gradient

A linear blend from this color to its complement, with the CSS ready to paste.

background: linear-gradient(135deg, #175d64, #641d17);

Nearest named colors

The closest matches from a corpus of about 31,900 named colours, ranked by ΔE (CIEDE2000) — a measure of how different two colours look. ΔE under 1 is nearly indistinguishable; around 10 is clearly different.

CSS code

Every common way to use this color in a stylesheet or a component.

color: #175d64;
background-color: #175d64;
:root {
  --color-primary: #175d64;
}
color: rgb(23 93 100);
color: oklch(44% 0.067 204.92);
<div class="bg-[#175d64]">…</div>