What color is #0A2B4C?

#0A2B4C is a very dark, vivid blue. In RGB it is rgb(10, 43, 76), and in HSL hsl(210, 77%, 17%).

Is #0A2B4C accessible as text?

On white, #0A2B4C has a contrast ratio of 14.36:1 (passes WCAG AA for body text); on black it is 1.46:1 (fails). For text placed on #0A2B4C, use white for the best readability.

What is the closest Tailwind color to #0A2B4C?

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

What colors go well with #0A2B4C?

#0A2B4C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4D2B0A. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0A2B4C below.

Is #0A2B4C good for buttons?

#0A2B4C works well for buttons and highlights, but use white text on #0A2B4C — black text only reaches 1.46:1, below the 4.5:1 needed for normal-size labels.

Is #0A2B4C the same as CSS midnightblue?

No — #0A2B4C is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#0A2B4C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0A2B4C

Not just a swatch — here's how #0A2B4C works with other colors. Named schemes with #0A2B4C in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0A2B4C Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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 #0A2B4C Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 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 #0A2B4C Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #2E4B6B

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 #0A2B4C Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

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 #0A2B4C Secondary #45505C Support #959386 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 #0A2B4C 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 30/100

Cool

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

Softness 28/100

Low

Firm and assertive — carries weight and contrast.

Depth 70/100

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 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 73/100

High

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

Brand distinctiveness 28/100

Low

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

UI accent fit 29/100

Low

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

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0A2B4C

For UI

For branding

For interior

For fashion

People also use #0A2B4C with

Pine Green 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 14.4:1. Use

Subtle surface Use #BDD5EC for cards and hover fills. Tint 80

Avoid beside #0A154D — 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 #0A2B4C at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #0A2B4C;
  --color-base-rgb: 10 43 76;
  --color-base-oklch: oklch(28.5% 0.071 251.9);
  --color-50: #F1F7FE;
  --color-100: #DAEBFB;
  --color-200: #B7D6F5;
  --color-300: #86B8E9;
  --color-400: #5999D9;
  --color-500: #377ABE;
  --color-600: #316191;
  --color-700: #284766;
  --color-800: #1E3043;
  --color-900: #141F29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  prussian-blue: {
    50: '#F1F7FE',
    100: '#DAEBFB',
    200: '#B7D6F5',
    300: '#86B8E9',
    400: '#5999D9',
    500: '#377ABE',
    600: '#316191',
    700: '#284766',
    800: '#1E3043',
    900: '#141F29',
  },
}

$base: #0A2B4C;
$base-ink: #FFFFFF;
$base-50: #F1F7FE;
$base-100: #DAEBFB;
$base-200: #B7D6F5;
$base-300: #86B8E9;
$base-400: #5999D9;
$base-500: #377ABE;
$base-600: #316191;
$base-700: #284766;
$base-800: #1E3043;
$base-900: #141F29;
$base-hover: #08233D;
$base-subtle: #9AC0E5;

{
    "color": {
        "base": {
            "value": "#0A2B4C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F7FE",
                "type": "color"
            },
            "100": {
                "value": "#DAEBFB",
                "type": "color"
            },
            "200": {
                "value": "#B7D6F5",
                "type": "color"
            },
            "300": {
                "value": "#86B8E9",
                "type": "color"
            },
            "400": {
                "value": "#5999D9",
                "type": "color"
            },
            "500": {
                "value": "#377ABE",
                "type": "color"
            },
            "600": {
                "value": "#316191",
                "type": "color"
            },
            "700": {
                "value": "#284766",
                "type": "color"
            },
            "800": {
                "value": "#1E3043",
                "type": "color"
            },
            "900": {
                "value": "#141F29",
                "type": "color"
            }
        }
    }
}