What color is #0B445D?

#0B445D is a dark, vivid cyan-blue. In RGB it is rgb(11, 68, 93), and in HSL hsl(198, 79%, 20%).

Is #0B445D accessible as text?

On white, #0B445D has a contrast ratio of 10.50:1 (passes WCAG AA for body text); on black it is 2.00:1 (fails). For text placed on #0B445D, use white for the best readability.

What is the closest Tailwind color to #0B445D?

The nearest Tailwind CSS token is cyan-900 (#104E64).

What colors go well with #0B445D?

#0B445D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5B230B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0B445D below.

Is #0B445D good for buttons?

#0B445D works well for buttons and highlights, but use white text on #0B445D — black text only reaches 2.00:1, below the 4.5:1 needed for normal-size labels.

Is #0B445D the same as CSS darkslategray?

No — #0B445D is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#0B445D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0B445D

Not just a swatch — here's how #0B445D works with other colors. Named schemes with #0B445D in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0B445D Accent #A6C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Charcoal 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 #0B445D Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 Anchor #2E3236

Charcoal 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 #0B445D Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #38657D

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

Vintage Leather Lead · 5 colors

Lead #0B445D Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

Charcoal 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 #0B445D Secondary #576771 Support #969386 Ink #16140F

Charcoal 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 Charcoal carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #0B445D 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 29/100

Cool

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 39/100

Low

A faint retro warmth without tipping into sepia.

Luxury 66/100

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 51/100

Moderate

Workable accent with care around contrast.

Surface fit 40/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0B445D

For UI

For branding

For interior

For fashion

People also use #0B445D with

Pine Green Navy Espresso 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 10.5:1. Use

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

Avoid beside #0B285B — 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 #0B445D 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: #0B445D;
  --color-base-rgb: 11 68 93;
  --color-base-oklch: oklch(36.5% 0.070 233.2);
  --color-50: #F1FAFE;
  --color-100: #DAF1FC;
  --color-200: #B6E3F6;
  --color-300: #85CCEB;
  --color-400: #58B3DA;
  --color-500: #3596C0;
  --color-600: #307592;
  --color-700: #285467;
  --color-800: #1D3843;
  --color-900: #142329;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F1FAFE',
    100: '#DAF1FC',
    200: '#B6E3F6',
    300: '#85CCEB',
    400: '#58B3DA',
    500: '#3596C0',
    600: '#307592',
    700: '#285467',
    800: '#1D3843',
    900: '#142329',
  },
}

$base: #0B445D;
$base-ink: #FFFFFF;
$base-50: #F1FAFE;
$base-100: #DAF1FC;
$base-200: #B6E3F6;
$base-300: #85CCEB;
$base-400: #58B3DA;
$base-500: #3596C0;
$base-600: #307592;
$base-700: #285467;
$base-800: #1D3843;
$base-900: #142329;
$base-hover: #093649;
$base-subtle: #9DD0E7;

{
    "color": {
        "base": {
            "value": "#0B445D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FAFE",
                "type": "color"
            },
            "100": {
                "value": "#DAF1FC",
                "type": "color"
            },
            "200": {
                "value": "#B6E3F6",
                "type": "color"
            },
            "300": {
                "value": "#85CCEB",
                "type": "color"
            },
            "400": {
                "value": "#58B3DA",
                "type": "color"
            },
            "500": {
                "value": "#3596C0",
                "type": "color"
            },
            "600": {
                "value": "#307592",
                "type": "color"
            },
            "700": {
                "value": "#285467",
                "type": "color"
            },
            "800": {
                "value": "#1D3843",
                "type": "color"
            },
            "900": {
                "value": "#142329",
                "type": "color"
            }
        }
    }
}