What color is #0F4E79?

#0F4E79 is a dark, vivid cyan-blue. In RGB it is rgb(15, 78, 121), and in HSL hsl(204, 78%, 27%).

Is #0F4E79 accessible as text?

On white, #0F4E79 has a contrast ratio of 8.80:1 (passes WCAG AA for body text); on black it is 2.39:1 (fails). For text placed on #0F4E79, use white for the best readability.

What is the closest Tailwind color to #0F4E79?

The nearest Tailwind CSS token is sky-900 (#024A70).

What colors go well with #0F4E79?

#0F4E79 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7B3A0F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0F4E79 below.

Is #0F4E79 good for buttons?

#0F4E79 works well for buttons and highlights, but use white text on #0F4E79 — black text only reaches 2.39:1, below the 4.5:1 needed for normal-size labels.

Is #0F4E79 the same as CSS darkslategray?

No — #0F4E79 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#0F4E79 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0F4E79

Not just a swatch — here's how #0F4E79 works with other colors. Named schemes with #0F4E79 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0F4E79 Accent #A5C4C0 Surface #DEDBBF Secondary #9AA0A0 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 #0F4E79 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3E7099

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 #0F4E79 Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

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 #0F4E79 Surface #EEE9D6 Anchor #5A2246 Accent #E4C2CB Secondary #322B30

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 #0F4E79 Secondary #627484 Support #969386 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 #0F4E79 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 23/100

Cool

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

Softness 36/100

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 47/100

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 25/100

Low

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

UI accent fit 71/100

High

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

Surface fit 30/100

Low

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

Print safety 78/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0F4E79

For UI

For branding

For interior

For fashion

People also use #0F4E79 with

Persian Green Midnight Blue Walnut Brown Platinum 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 8.8:1. Use

Subtle surface Use #C5DEEF for cards and hover fills. Tint 80

Avoid beside #0F2C7B — 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 #0F4E79 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: #0F4E79;
  --color-base-rgb: 15 78 121;
  --color-base-oklch: oklch(40.9% 0.094 244.6);
  --color-50: #F1F9FE;
  --color-100: #DAEEFB;
  --color-200: #B6DDF6;
  --color-300: #85C2EA;
  --color-400: #58A6DA;
  --color-500: #3688BF;
  --color-600: #306B91;
  --color-700: #284E67;
  --color-800: #1E3443;
  --color-900: #142129;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F1F9FE',
    100: '#DAEEFB',
    200: '#B6DDF6',
    300: '#85C2EA',
    400: '#58A6DA',
    500: '#3688BF',
    600: '#306B91',
    700: '#284E67',
    800: '#1E3443',
    900: '#142129',
  },
}

$base: #0F4E79;
$base-ink: #FFFFFF;
$base-50: #F1F9FE;
$base-100: #DAEEFB;
$base-200: #B6DDF6;
$base-300: #85C2EA;
$base-400: #58A6DA;
$base-500: #3688BF;
$base-600: #306B91;
$base-700: #284E67;
$base-800: #1E3443;
$base-900: #142129;
$base-hover: #0C4062;
$base-subtle: #A6CEE8;

{
    "color": {
        "base": {
            "value": "#0F4E79",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F9FE",
                "type": "color"
            },
            "100": {
                "value": "#DAEEFB",
                "type": "color"
            },
            "200": {
                "value": "#B6DDF6",
                "type": "color"
            },
            "300": {
                "value": "#85C2EA",
                "type": "color"
            },
            "400": {
                "value": "#58A6DA",
                "type": "color"
            },
            "500": {
                "value": "#3688BF",
                "type": "color"
            },
            "600": {
                "value": "#306B91",
                "type": "color"
            },
            "700": {
                "value": "#284E67",
                "type": "color"
            },
            "800": {
                "value": "#1E3443",
                "type": "color"
            },
            "900": {
                "value": "#142129",
                "type": "color"
            }
        }
    }
}

Palettes built on #0F4E79

Color Lab

Pairs with #0F4E79

UI roles & guardrails

In real applications

Scales

Every model

Export