What color is #0B0366?

#0B0366 is a dark, vivid blue. In RGB it is rgb(11, 3, 102), and in HSL hsl(245, 94%, 21%).

Is #0B0366 accessible as text?

On white, #0B0366 has a contrast ratio of 17.23:1 (passes WCAG AA for body text); on black it is 1.22:1 (fails). For text placed on #0B0366, use white for the best readability.

What is the closest Tailwind color to #0B0366?

The nearest Tailwind CSS token is indigo-950 (#1E1A4D).

What colors go well with #0B0366?

#0B0366 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5F6803. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0B0366 below.

Is #0B0366 good for buttons?

#0B0366 works well for buttons and highlights, but use white text on #0B0366 — black text only reaches 1.22:1, below the 4.5:1 needed for normal-size labels.

Is #0B0366 the same as CSS navy?

No — #0B0366 is not the CSS named color navy, but navy (#000080) is the closest CSS named color.

#0B0366 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0B0366

Not just a swatch — here's how #0B0366 works with other colors. Named schemes with #0B0366 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #0B0366 Anchor #141210 Accent #DC9659 Secondary #252933 Surface #F4ECE3

Navy Blue carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Moody Editorial Color · 5 colors

Color #0B0366 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #0A002C

Navy Blue adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Navy Blue.

Coastal Morning Lead · 5 colors

Lead #0B0366 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Navy Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Vintage Leather Lead · 5 colors

Lead #0B0366 Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

Navy 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 #0B0366 Secondary #37415F Support #9D8F88 Ink #18140F

Navy 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 Navy Blue carrying the quiet middle.

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Color Lab

How #0B0366 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 15/100

Cool

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

Softness 19/100

Very low

Firm and assertive — carries weight and contrast.

Depth 79/100

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 22/100

Low

Clean and current — no dusty, aged cast.

Luxury 76/100

High

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

Brand distinctiveness 59/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 23/100

Low

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

Surface fit 24/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0B0366

For UI

For branding

For interior

For fashion

People also use #0B0366 with

Classic Blue Indigo Army Green Gainsboro Prussian Blue

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 17.2:1. Use

Subtle surface Use #C0BBF2 for cards and hover fills. Tint 80

Avoid beside #2D0368 — 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 #0B0366 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: #0B0366;
  --color-base-rgb: 11 3 102;
  --color-base-oklch: oklch(24.0% 0.154 269.1);
  --color-50: #F1F0FE;
  --color-100: #DBD8FD;
  --color-200: #B7B1FC;
  --color-300: #857BF4;
  --color-400: #584BE7;
  --color-500: #3528CD;
  --color-600: #30269B;
  --color-700: #28216D;
  --color-800: #1E1A47;
  --color-900: #14122B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy-blue: {
    50: '#F1F0FE',
    100: '#DBD8FD',
    200: '#B7B1FC',
    300: '#857BF4',
    400: '#584BE7',
    500: '#3528CD',
    600: '#30269B',
    700: '#28216D',
    800: '#1E1A47',
    900: '#14122B',
  },
}

$base: #0B0366;
$base-ink: #FFFFFF;
$base-50: #F1F0FE;
$base-100: #DBD8FD;
$base-200: #B7B1FC;
$base-300: #857BF4;
$base-400: #584BE7;
$base-500: #3528CD;
$base-600: #30269B;
$base-700: #28216D;
$base-800: #1E1A47;
$base-900: #14122B;
$base-hover: #090353;
$base-subtle: #9F97EE;

{
    "color": {
        "base": {
            "value": "#0B0366",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F0FE",
                "type": "color"
            },
            "100": {
                "value": "#DBD8FD",
                "type": "color"
            },
            "200": {
                "value": "#B7B1FC",
                "type": "color"
            },
            "300": {
                "value": "#857BF4",
                "type": "color"
            },
            "400": {
                "value": "#584BE7",
                "type": "color"
            },
            "500": {
                "value": "#3528CD",
                "type": "color"
            },
            "600": {
                "value": "#30269B",
                "type": "color"
            },
            "700": {
                "value": "#28216D",
                "type": "color"
            },
            "800": {
                "value": "#1E1A47",
                "type": "color"
            },
            "900": {
                "value": "#14122B",
                "type": "color"
            }
        }
    }
}

Palettes built on #0B0366

Color Lab

Pairs with #0B0366

UI roles & guardrails

In real applications

Scales

Every model

Export