What color is #0B1998?

#0B1998 is a dark, vivid blue. In RGB it is rgb(11, 25, 152), and in HSL hsl(234, 87%, 32%).

Is #0B1998 accessible as text?

On white, #0B1998 has a contrast ratio of 13.07:1 (passes WCAG AA for body text); on black it is 1.61:1 (fails). For text placed on #0B1998, use white for the best readability.

What is the closest Tailwind color to #0B1998?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #0B1998?

#0B1998 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #998A0B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0B1998 below.

Is #0B1998 good for buttons?

#0B1998 works well for buttons and highlights, but use white text on #0B1998 — black text only reaches 1.61:1, below the 4.5:1 needed for normal-size labels.

Is #0B1998 the same as CSS darkblue?

No — #0B1998 is not the CSS named color darkblue, but darkblue (#00008B) is the closest CSS named color.

#0B1998 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0B1998

Not just a swatch — here's how #0B1998 works with other colors. Named schemes with #0B1998 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #0B1998 Anchor #141210 Accent #DD965A Secondary #242933 Surface #F4ECE3

Zaffre 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.

Tech Product Signal · 5 colors

Signal #0B1998 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #2749B6

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

Moody Editorial Color · 5 colors

Color #0B1998 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #190053

Zaffre 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 Zaffre.

Coastal Morning Lead · 5 colors

Lead #0B1998 Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #0B1998 Secondary #495A82 Support #9D8F88 Ink #18140F

Zaffre 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 Zaffre carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #0B1998 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 10/100

Cool

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

Softness 22/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 65/100

High

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

Brand distinctiveness 76/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 44/100

Moderate

Workable accent with care around contrast.

Surface fit 18/100

Very low

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

Print safety 65/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #0B1998

For UI

For branding

For interior

For fashion

People also use #0B1998 with

Steel Blue Indigo Olive 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 13.1:1. Use

Subtle surface Use #C7CBF2 for cards and hover fills. Tint 80

Avoid beside #2C0B99 — 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 #0B1998 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: #0B1998;
  --color-base-rgb: 11 25 152;
  --color-base-oklch: oklch(33.1% 0.197 266.1);
  --color-50: #F0F2FE;
  --color-100: #D8DCFD;
  --color-200: #B3BAFA;
  --color-300: #7F8BF0;
  --color-400: #515FE1;
  --color-500: #2E3DC7;
  --color-600: #2B3697;
  --color-700: #242B6B;
  --color-800: #1C2045;
  --color-900: #13152A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  zaffre: {
    50: '#F0F2FE',
    100: '#D8DCFD',
    200: '#B3BAFA',
    300: '#7F8BF0',
    400: '#515FE1',
    500: '#2E3DC7',
    600: '#2B3697',
    700: '#242B6B',
    800: '#1C2045',
    900: '#13152A',
  },
}

$base: #0B1998;
$base-ink: #FFFFFF;
$base-50: #F0F2FE;
$base-100: #D8DCFD;
$base-200: #B3BAFA;
$base-300: #7F8BF0;
$base-400: #515FE1;
$base-500: #2E3DC7;
$base-600: #2B3697;
$base-700: #242B6B;
$base-800: #1C2045;
$base-900: #13152A;
$base-hover: #08147A;
$base-subtle: #A9AFED;

{
    "color": {
        "base": {
            "value": "#0B1998",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F2FE",
                "type": "color"
            },
            "100": {
                "value": "#D8DCFD",
                "type": "color"
            },
            "200": {
                "value": "#B3BAFA",
                "type": "color"
            },
            "300": {
                "value": "#7F8BF0",
                "type": "color"
            },
            "400": {
                "value": "#515FE1",
                "type": "color"
            },
            "500": {
                "value": "#2E3DC7",
                "type": "color"
            },
            "600": {
                "value": "#2B3697",
                "type": "color"
            },
            "700": {
                "value": "#242B6B",
                "type": "color"
            },
            "800": {
                "value": "#1C2045",
                "type": "color"
            },
            "900": {
                "value": "#13152A",
                "type": "color"
            }
        }
    }
}

Palettes built on #0B1998

Color Lab

Pairs with #0B1998

UI roles & guardrails

In real applications

Scales

Every model

Export