What color is #0B2F3D?

#0B2F3D is a very dark cyan-blue. In RGB it is rgb(11, 47, 61), and in HSL hsl(197, 69%, 14%).

Is #0B2F3D accessible as text?

On white, #0B2F3D has a contrast ratio of 14.11:1 (passes WCAG AA for body text); on black it is 1.49:1 (fails). For text placed on #0B2F3D, use white for the best readability.

What is the closest Tailwind color to #0B2F3D?

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

What colors go well with #0B2F3D?

#0B2F3D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3C190B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0B2F3D below.

Is #0B2F3D good for buttons?

#0B2F3D works well for buttons and highlights, but use white text on #0B2F3D — black text only reaches 1.49:1, below the 4.5:1 needed for normal-size labels.

Is #0B2F3D the same as CSS midnightblue?

No — #0B2F3D is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#0B2F3D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0B2F3D

Not just a swatch — here's how #0B2F3D works with other colors. Named schemes with #0B2F3D in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0B2F3D Accent #A6C4BF 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 #0B2F3D Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 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 #0B2F3D Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #304E5C

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 #0B2F3D Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

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 #0B2F3D Secondary #465156 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 #0B2F3D 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 36/100

Cool

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 68/100

High

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

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 28/100

Low

A faint retro warmth without tipping into sepia.

Luxury 70/100

High

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

Brand distinctiveness 18/100

Very low

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

UI accent fit 25/100

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 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0B2F3D

For UI

For branding

For interior

For fashion

People also use #0B2F3D with

Hunter Green Navy Oxblood 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 14.1:1. Use

Subtle surface Use #BDDDE9 for cards and hover fills. Tint 80

Avoid beside #0B1E3C — 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 #0B2F3D 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: #0B2F3D;
  --color-base-rgb: 11 47 61;
  --color-base-oklch: oklch(28.7% 0.047 228.0);
  --color-50: #F2FAFD;
  --color-100: #DCF1F9;
  --color-200: #BAE2F2;
  --color-300: #8BCBE4;
  --color-400: #60B2D2;
  --color-500: #3E95B7;
  --color-600: #36748C;
  --color-700: #2C5363;
  --color-800: #203841;
  --color-900: #152328;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  prussian-blue: {
    50: '#F2FAFD',
    100: '#DCF1F9',
    200: '#BAE2F2',
    300: '#8BCBE4',
    400: '#60B2D2',
    500: '#3E95B7',
    600: '#36748C',
    700: '#2C5363',
    800: '#203841',
    900: '#152328',
  },
}

$base: #0B2F3D;
$base-ink: #FFFFFF;
$base-50: #F2FAFD;
$base-100: #DCF1F9;
$base-200: #BAE2F2;
$base-300: #8BCBE4;
$base-400: #60B2D2;
$base-500: #3E95B7;
$base-600: #36748C;
$base-700: #2C5363;
$base-800: #203841;
$base-900: #152328;
$base-hover: #092530;
$base-subtle: #9BCCE0;

{
    "color": {
        "base": {
            "value": "#0B2F3D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FAFD",
                "type": "color"
            },
            "100": {
                "value": "#DCF1F9",
                "type": "color"
            },
            "200": {
                "value": "#BAE2F2",
                "type": "color"
            },
            "300": {
                "value": "#8BCBE4",
                "type": "color"
            },
            "400": {
                "value": "#60B2D2",
                "type": "color"
            },
            "500": {
                "value": "#3E95B7",
                "type": "color"
            },
            "600": {
                "value": "#36748C",
                "type": "color"
            },
            "700": {
                "value": "#2C5363",
                "type": "color"
            },
            "800": {
                "value": "#203841",
                "type": "color"
            },
            "900": {
                "value": "#152328",
                "type": "color"
            }
        }
    }
}