What color is #0F4C8A?

#0F4C8A is a dark, vivid blue. In RGB it is rgb(15, 76, 138), and in HSL hsl(210, 80%, 30%).

Is #0F4C8A accessible as text?

On white, #0F4C8A has a contrast ratio of 8.67:1 (passes WCAG AA for body text); on black it is 2.42:1 (fails). For text placed on #0F4C8A, use white for the best readability.

What is the closest Tailwind color to #0F4C8A?

The nearest Tailwind CSS token is sky-800 (#00598A).

What colors go well with #0F4C8A?

#0F4C8A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8A4D0F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0F4C8A below.

Is #0F4C8A good for buttons?

#0F4C8A works well for buttons and highlights, but use white text on #0F4C8A — black text only reaches 2.42:1, below the 4.5:1 needed for normal-size labels.

Is #0F4C8A the same as CSS darkslateblue?

No — #0F4C8A is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#0F4C8A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0F4C8A

Not just a swatch — here's how #0F4C8A works with other colors. Named schemes with #0F4C8A in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0F4C8A Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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

Tech Product Signal · 5 colors

Signal #0F4C8A Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3D6FAA

Classic 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 Classic Blue.

Vintage Leather Lead · 5 colors

Lead #0F4C8A Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

Classic 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.

Berry & Cream Lead · 5 colors

Lead #0F4C8A Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CB Secondary #322B2F

Classic Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #0F4C8A Secondary #62758B Support #9D8F89 Ink #16140F

Classic 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 Classic Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #0F4C8A 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 18/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 59/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 78/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 22/100

Low

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

Print safety 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0F4C8A

For UI

For branding

For interior

For fashion

People also use #0F4C8A with

Light Sea Green Phthalo Blue Russet 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 8.7:1. Use

Subtle surface Use #C7DBF0 for cards and hover fills. Tint 80

Avoid beside #0F248A — 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 #0F4C8A at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #0F4C8A;
  --color-base-rgb: 15 76 138;
  --color-base-oklch: oklch(41.6% 0.119 253.4);
  --color-50: #F1F7FE;
  --color-100: #D9EBFC;
  --color-200: #B6D6F7;
  --color-300: #84B8EB;
  --color-400: #5799DB;
  --color-500: #347AC1;
  --color-600: #2F6193;
  --color-700: #274768;
  --color-800: #1D3044;
  --color-900: #141F29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F1F7FE',
    100: '#D9EBFC',
    200: '#B6D6F7',
    300: '#84B8EB',
    400: '#5799DB',
    500: '#347AC1',
    600: '#2F6193',
    700: '#274768',
    800: '#1D3044',
    900: '#141F29',
  },
}

$base: #0F4C8A;
$base-ink: #FFFFFF;
$base-50: #F1F7FE;
$base-100: #D9EBFC;
$base-200: #B6D6F7;
$base-300: #84B8EB;
$base-400: #5799DB;
$base-500: #347AC1;
$base-600: #2F6193;
$base-700: #274768;
$base-800: #1D3044;
$base-900: #141F29;
$base-hover: #0C3D6E;
$base-subtle: #A9C9EA;

{
    "color": {
        "base": {
            "value": "#0F4C8A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F7FE",
                "type": "color"
            },
            "100": {
                "value": "#D9EBFC",
                "type": "color"
            },
            "200": {
                "value": "#B6D6F7",
                "type": "color"
            },
            "300": {
                "value": "#84B8EB",
                "type": "color"
            },
            "400": {
                "value": "#5799DB",
                "type": "color"
            },
            "500": {
                "value": "#347AC1",
                "type": "color"
            },
            "600": {
                "value": "#2F6193",
                "type": "color"
            },
            "700": {
                "value": "#274768",
                "type": "color"
            },
            "800": {
                "value": "#1D3044",
                "type": "color"
            },
            "900": {
                "value": "#141F29",
                "type": "color"
            }
        }
    }
}

Palettes built on #0F4C8A

Color Lab

Pairs with #0F4C8A

UI roles & guardrails

In real applications

Scales

Every model

Export