What color is #172A4E?

#172A4E is a dark blue. In RGB it is rgb(23, 42, 78), and in HSL hsl(219, 54%, 20%).

Is #172A4E accessible as text?

On white, #172A4E has a contrast ratio of 14.21:1 (passes WCAG AA for body text); on black it is 1.48:1 (fails). For text placed on #172A4E, use white for the best readability.

What is the closest Tailwind color to #172A4E?

The nearest Tailwind CSS token is sky-950 (#052F4A).

What colors go well with #172A4E?

#172A4E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4F3B17. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #172A4E below.

Is #172A4E good for buttons?

#172A4E works well for buttons and highlights, but use white text on #172A4E — black text only reaches 1.48:1, below the 4.5:1 needed for normal-size labels.

Is #172A4E the same as CSS midnightblue?

No — #172A4E is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#172A4E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #172A4E

Not just a swatch — here's how #172A4E works with other colors. Named schemes with #172A4E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #172A4E Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Prussian Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #172A4E Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 Anchor #2E3236

Prussian Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #172A4E Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #374A6D

Prussian Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Prussian Blue.

Vintage Leather Lead · 5 colors

Lead #172A4E Secondary #7F4536 Surface #E1DDC1 Accent #375246 Anchor #57223A

Prussian Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #172A4E Secondary #48505E Support #9D8F88 Ink #18140F

Prussian Blue is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Prussian Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #172A4E actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.

Warmth 32/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 28/100

Low

Firm and assertive — carries weight and contrast.

Depth 69/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 35/100

Low

A faint retro warmth without tipping into sepia.

Luxury 72/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 27/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 30/100

Low

Workable accent with care around contrast.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #172A4E

For UI

For branding

For interior

For fashion

People also use #172A4E with

Myrtle Green Russian Violet Espresso Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

Body text Passes on white at 16px and above. Pass

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 14.2:1. Use

Subtle surface Use #C6D1E6 for cards and hover fills. Tint 80

Avoid beside #17184F — the hue gap is too small to read as intentional. Clash

In real applications

Not a swatch to memorise — a color to build with. Here is #172A4E at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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Dashboard

Revenue

$48.2k ▲ 12%

Brand

AVELINE

Studio

Poster

Nov 14 · 8PM

NIGHT
MARKET

Packaging

BLOOM

Botanical Wash

250 ml

Interior

Every model

Export

:root {
  --color-base: #172A4E;
  --color-base-rgb: 23 42 78;
  --color-base-oklch: oklch(29.0% 0.071 262.0);
  --color-50: #F3F6FC;
  --color-100: #DFE7F6;
  --color-200: #C0D0EC;
  --color-300: #95ADDA;
  --color-400: #6C8CC6;
  --color-500: #4B6CAA;
  --color-600: #3F5783;
  --color-700: #32415D;
  --color-800: #232D3D;
  --color-900: #171C26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  prussian-blue: {
    50: '#F3F6FC',
    100: '#DFE7F6',
    200: '#C0D0EC',
    300: '#95ADDA',
    400: '#6C8CC6',
    500: '#4B6CAA',
    600: '#3F5783',
    700: '#32415D',
    800: '#232D3D',
    900: '#171C26',
  },
}

$base: #172A4E;
$base-ink: #FFFFFF;
$base-50: #F3F6FC;
$base-100: #DFE7F6;
$base-200: #C0D0EC;
$base-300: #95ADDA;
$base-400: #6C8CC6;
$base-500: #4B6CAA;
$base-600: #3F5783;
$base-700: #32415D;
$base-800: #232D3D;
$base-900: #171C26;
$base-hover: #13223F;
$base-subtle: #A9BADB;

{
    "color": {
        "base": {
            "value": "#172A4E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F6FC",
                "type": "color"
            },
            "100": {
                "value": "#DFE7F6",
                "type": "color"
            },
            "200": {
                "value": "#C0D0EC",
                "type": "color"
            },
            "300": {
                "value": "#95ADDA",
                "type": "color"
            },
            "400": {
                "value": "#6C8CC6",
                "type": "color"
            },
            "500": {
                "value": "#4B6CAA",
                "type": "color"
            },
            "600": {
                "value": "#3F5783",
                "type": "color"
            },
            "700": {
                "value": "#32415D",
                "type": "color"
            },
            "800": {
                "value": "#232D3D",
                "type": "color"
            },
            "900": {
                "value": "#171C26",
                "type": "color"
            }
        }
    }
}