What color is #19243F?

#19243F is a very dark blue. In RGB it is rgb(25, 36, 63), and in HSL hsl(223, 43%, 17%).

Is #19243F accessible as text?

On white, #19243F has a contrast ratio of 15.38:1 (passes WCAG AA for body text); on black it is 1.37:1 (fails). For text placed on #19243F, use white for the best readability.

What is the closest Tailwind color to #19243F?

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

What colors go well with #19243F?

#19243F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3E3319. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #19243F below.

Is #19243F good for buttons?

#19243F works well for buttons and highlights, but use white text on #19243F — black text only reaches 1.37:1, below the 4.5:1 needed for normal-size labels.

Is #19243F the same as CSS midnightblue?

No — #19243F is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#19243F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #19243F

Not just a swatch — here's how #19243F works with other colors. Named schemes with #19243F in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #19243F Accent #A5C4C2 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 #19243F Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A7 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 #19243F Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #38435E

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 #19243F Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #58223A

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 #19243F Secondary #444953 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 #19243F 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 37/100

Cool

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

Softness 27/100

Low

Firm and assertive — carries weight and contrast.

Depth 71/100

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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 73/100

High

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

Brand distinctiveness 20/100

Low

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

UI accent fit 22/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 52/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 90/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #19243F

For UI

For branding

For interior

For fashion

People also use #19243F with

Dark Slate Gray 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 15.4:1. Use

Subtle surface Use #C8CFE2 for cards and hover fills. Tint 80

Avoid beside #1B193E — 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 #19243F at work across the surfaces designers actually ship.

Website / UI

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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: #19243F;
  --color-base-rgb: 25 36 63;
  --color-base-oklch: oklch(26.5% 0.053 266.1);
  --color-50: #F4F6FB;
  --color-100: #E1E7F4;
  --color-200: #C5CFE8;
  --color-300: #9CACD3;
  --color-400: #758ABD;
  --color-500: #556AA0;
  --color-600: #46557C;
  --color-700: #364059;
  --color-800: #262C3B;
  --color-900: #191C24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  prussian-blue: {
    50: '#F4F6FB',
    100: '#E1E7F4',
    200: '#C5CFE8',
    300: '#9CACD3',
    400: '#758ABD',
    500: '#556AA0',
    600: '#46557C',
    700: '#364059',
    800: '#262C3B',
    900: '#191C24',
  },
}

$base: #19243F;
$base-ink: #FFFFFF;
$base-50: #F4F6FB;
$base-100: #E1E7F4;
$base-200: #C5CFE8;
$base-300: #9CACD3;
$base-400: #758ABD;
$base-500: #556AA0;
$base-600: #46557C;
$base-700: #364059;
$base-800: #262C3B;
$base-900: #191C24;
$base-hover: #141C32;
$base-subtle: #ABB7D4;

{
    "color": {
        "base": {
            "value": "#19243F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F6FB",
                "type": "color"
            },
            "100": {
                "value": "#E1E7F4",
                "type": "color"
            },
            "200": {
                "value": "#C5CFE8",
                "type": "color"
            },
            "300": {
                "value": "#9CACD3",
                "type": "color"
            },
            "400": {
                "value": "#758ABD",
                "type": "color"
            },
            "500": {
                "value": "#556AA0",
                "type": "color"
            },
            "600": {
                "value": "#46557C",
                "type": "color"
            },
            "700": {
                "value": "#364059",
                "type": "color"
            },
            "800": {
                "value": "#262C3B",
                "type": "color"
            },
            "900": {
                "value": "#191C24",
                "type": "color"
            }
        }
    }
}