What color is #004FA8?

#004FA8 is a dark, vivid blue. In RGB it is rgb(0, 79, 168), and in HSL hsl(212, 100%, 33%).

Is #004FA8 accessible as text?

On white, #004FA8 has a contrast ratio of 7.82:1 (passes WCAG AA for body text); on black it is 2.68:1 (fails). For text placed on #004FA8, use white for the best readability.

What is the closest Tailwind color to #004FA8?

The nearest Tailwind CSS token is blue-800 (#193CB8).

What colors go well with #004FA8?

#004FA8 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A85A00. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #004FA8 below.

Is #004FA8 good for buttons?

#004FA8 works well for buttons and highlights, but use white text on #004FA8 — black text only reaches 2.68:1, below the 4.5:1 needed for normal-size labels.

Is #004FA8 the same as CSS darkslateblue?

No — #004FA8 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#004FA8 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #004FA8

Not just a swatch — here's how #004FA8 works with other colors. Named schemes with #004FA8 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #004FA8 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Cobalt 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 #004FA8 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3975C7

Cobalt 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 Cobalt Blue.

Vintage Leather Lead · 5 colors

Lead #004FA8 Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57223B

Cobalt 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 #004FA8 Surface #EDE9D6 Anchor #5A2144 Accent #E4C2CA Secondary #322B2F

Cobalt 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 #004FA8 Secondary #667D9C Support #9D8F89 Ink #16140F

Cobalt 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 Cobalt Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #004FA8 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 8/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

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 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 59/100

Moderate

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

Brand distinctiveness 43/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 87/100

Very high

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

Surface fit 11/100

Very low

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

Print safety 68/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #004FA8

For UI

For branding

For interior

For fashion

People also use #004FA8 with

Dark Turquoise Zaffre Brown 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 7.8:1. Use

Subtle surface Use #C4DBF5 for cards and hover fills. Tint 80

Avoid beside #0016A8 — 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 #004FA8 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: #004FA8;
  --color-base-rgb: 0 79 168;
  --color-base-oklch: oklch(44.3% 0.158 257.1);
  --color-50: #F0F7FE;
  --color-100: #D8E9FD;
  --color-200: #B1D4FC;
  --color-300: #77B3F8;
  --color-400: #4693EC;
  --color-500: #2275D2;
  --color-600: #235D9F;
  --color-700: #1F4570;
  --color-800: #182F48;
  --color-900: #111E2C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cobalt-blue: {
    50: '#F0F7FE',
    100: '#D8E9FD',
    200: '#B1D4FC',
    300: '#77B3F8',
    400: '#4693EC',
    500: '#2275D2',
    600: '#235D9F',
    700: '#1F4570',
    800: '#182F48',
    900: '#111E2C',
  },
}

$base: #004FA8;
$base-ink: #FFFFFF;
$base-50: #F0F7FE;
$base-100: #D8E9FD;
$base-200: #B1D4FC;
$base-300: #77B3F8;
$base-400: #4693EC;
$base-500: #2275D2;
$base-600: #235D9F;
$base-700: #1F4570;
$base-800: #182F48;
$base-900: #111E2C;
$base-hover: #003F87;
$base-subtle: #A5C9F3;

{
    "color": {
        "base": {
            "value": "#004FA8",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F7FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E9FD",
                "type": "color"
            },
            "200": {
                "value": "#B1D4FC",
                "type": "color"
            },
            "300": {
                "value": "#77B3F8",
                "type": "color"
            },
            "400": {
                "value": "#4693EC",
                "type": "color"
            },
            "500": {
                "value": "#2275D2",
                "type": "color"
            },
            "600": {
                "value": "#235D9F",
                "type": "color"
            },
            "700": {
                "value": "#1F4570",
                "type": "color"
            },
            "800": {
                "value": "#182F48",
                "type": "color"
            },
            "900": {
                "value": "#111E2C",
                "type": "color"
            }
        }
    }
}

Palettes built on #004FA8

Color Lab

Pairs with #004FA8

UI roles & guardrails

In real applications

Scales

Every model

Export