What color is #0B3752?

#0B3752 is a dark, vivid cyan-blue. In RGB it is rgb(11, 55, 82), and in HSL hsl(203, 76%, 18%).

Is #0B3752 accessible as text?

On white, #0B3752 has a contrast ratio of 12.48:1 (passes WCAG AA for body text); on black it is 1.68:1 (fails). For text placed on #0B3752, use white for the best readability.

What is the closest Tailwind color to #0B3752?

The nearest Tailwind CSS token is cyan-950 (#053345).

What colors go well with #0B3752?

#0B3752 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #51260B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0B3752 below.

Is #0B3752 good for buttons?

#0B3752 works well for buttons and highlights, but use white text on #0B3752 — black text only reaches 1.68:1, below the 4.5:1 needed for normal-size labels.

Is #0B3752 the same as CSS darkslategray?

No — #0B3752 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#0B3752 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0B3752

Not just a swatch — here's how #0B3752 works with other colors. Named schemes with #0B3752 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0B3752 Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

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 #0B3752 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 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 #0B3752 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #335771

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 #0B3752 Secondary #7F4439 Surface #E2DDC0 Accent #385245 Anchor #57233C

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 #F6F4EF Accent #0B3752 Secondary #4D5B65 Support #969386 Ink #16140F

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 #0B3752 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 31/100

Cool

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

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

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 69/100

High

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

Brand distinctiveness 26/100

Low

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

UI accent fit 38/100

Low

Workable accent with care around contrast.

Surface fit 44/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 84/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0B3752

For UI

For branding

For interior

For fashion

People also use #0B3752 with

Pine Green Navy Bistre Platinum 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 12.5:1. Use

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

Avoid beside #0B1F51 — 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 #0B3752 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: #0B3752;
  --color-base-rgb: 11 55 82;
  --color-base-oklch: oklch(32.2% 0.067 241.0);
  --color-50: #F1F9FE;
  --color-100: #DAEEFB;
  --color-200: #B7DDF5;
  --color-300: #87C3E9;
  --color-400: #5AA8D8;
  --color-500: #378ABD;
  --color-600: #326C90;
  --color-700: #294F66;
  --color-800: #1E3543;
  --color-900: #142129;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  prussian-blue: {
    50: '#F1F9FE',
    100: '#DAEEFB',
    200: '#B7DDF5',
    300: '#87C3E9',
    400: '#5AA8D8',
    500: '#378ABD',
    600: '#326C90',
    700: '#294F66',
    800: '#1E3543',
    900: '#142129',
  },
}

$base: #0B3752;
$base-ink: #FFFFFF;
$base-50: #F1F9FE;
$base-100: #DAEEFB;
$base-200: #B7DDF5;
$base-300: #87C3E9;
$base-400: #5AA8D8;
$base-500: #378ABD;
$base-600: #326C90;
$base-700: #294F66;
$base-800: #1E3543;
$base-900: #142129;
$base-hover: #092B41;
$base-subtle: #9CC9E5;

{
    "color": {
        "base": {
            "value": "#0B3752",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F9FE",
                "type": "color"
            },
            "100": {
                "value": "#DAEEFB",
                "type": "color"
            },
            "200": {
                "value": "#B7DDF5",
                "type": "color"
            },
            "300": {
                "value": "#87C3E9",
                "type": "color"
            },
            "400": {
                "value": "#5AA8D8",
                "type": "color"
            },
            "500": {
                "value": "#378ABD",
                "type": "color"
            },
            "600": {
                "value": "#326C90",
                "type": "color"
            },
            "700": {
                "value": "#294F66",
                "type": "color"
            },
            "800": {
                "value": "#1E3543",
                "type": "color"
            },
            "900": {
                "value": "#142129",
                "type": "color"
            }
        }
    }
}