What color is #0B233C?

#0B233C is a very dark blue. In RGB it is rgb(11, 35, 60), and in HSL hsl(211, 69%, 14%).

Is #0B233C accessible as text?

On white, #0B233C has a contrast ratio of 15.91:1 (passes WCAG AA for body text); on black it is 1.32:1 (fails). For text placed on #0B233C, use white for the best readability.

What is the closest Tailwind color to #0B233C?

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

What colors go well with #0B233C?

#0B233C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3C250B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0B233C below.

Is #0B233C good for buttons?

#0B233C works well for buttons and highlights, but use white text on #0B233C — black text only reaches 1.32:1, below the 4.5:1 needed for normal-size labels.

Is #0B233C the same as CSS midnightblue?

No — #0B233C is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#0B233C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0B233C

Not just a swatch — here's how #0B233C works with other colors. Named schemes with #0B233C in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0B233C Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Navy 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 #0B233C Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Navy 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 #0B233C Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #2C425A

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

Vintage Leather Lead · 5 colors

Lead #0B233C Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

Navy 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 #0B233C Secondary #3E4650 Support #959386 Ink #16140F

Navy 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 Navy carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #0B233C 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 34/100

Cool

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

Softness 26/100

Low

Firm and assertive — carries weight and contrast.

Depth 72/100

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 28/100

Low

A faint retro warmth without tipping into sepia.

Luxury 74/100

High

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

Brand distinctiveness 22/100

Low

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

UI accent fit 20/100

Very 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 #0B233C

For UI

For branding

For interior

For fashion

People also use #0B233C with

Dark Slate Gray Navy Bistre 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 15.9:1. Use

Subtle surface Use #BDD2E9 for cards and hover fills. Tint 80

Avoid beside #0B123C — 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 #0B233C 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: #0B233C;
  --color-base-rgb: 11 35 60;
  --color-base-oklch: oklch(25.2% 0.056 251.8);
  --color-50: #F2F7FD;
  --color-100: #DCEAF9;
  --color-200: #BAD5F2;
  --color-300: #8BB6E4;
  --color-400: #6097D2;
  --color-500: #3E78B7;
  --color-600: #365F8C;
  --color-700: #2C4663;
  --color-800: #203041;
  --color-900: #151E28;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F2F7FD',
    100: '#DCEAF9',
    200: '#BAD5F2',
    300: '#8BB6E4',
    400: '#6097D2',
    500: '#3E78B7',
    600: '#365F8C',
    700: '#2C4663',
    800: '#203041',
    900: '#151E28',
  },
}

$base: #0B233C;
$base-ink: #FFFFFF;
$base-50: #F2F7FD;
$base-100: #DCEAF9;
$base-200: #BAD5F2;
$base-300: #8BB6E4;
$base-400: #6097D2;
$base-500: #3E78B7;
$base-600: #365F8C;
$base-700: #2C4663;
$base-800: #203041;
$base-900: #151E28;
$base-hover: #091C30;
$base-subtle: #9BBCE0;

{
    "color": {
        "base": {
            "value": "#0B233C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F7FD",
                "type": "color"
            },
            "100": {
                "value": "#DCEAF9",
                "type": "color"
            },
            "200": {
                "value": "#BAD5F2",
                "type": "color"
            },
            "300": {
                "value": "#8BB6E4",
                "type": "color"
            },
            "400": {
                "value": "#6097D2",
                "type": "color"
            },
            "500": {
                "value": "#3E78B7",
                "type": "color"
            },
            "600": {
                "value": "#365F8C",
                "type": "color"
            },
            "700": {
                "value": "#2C4663",
                "type": "color"
            },
            "800": {
                "value": "#203041",
                "type": "color"
            },
            "900": {
                "value": "#151E28",
                "type": "color"
            }
        }
    }
}