What color is #33447D?

#33447D is a dark blue. In RGB it is rgb(51, 68, 125), and in HSL hsl(226, 42%, 35%).

Is #33447D accessible as text?

On white, #33447D has a contrast ratio of 9.28:1 (passes WCAG AA for body text); on black it is 2.26:1 (fails). For text placed on #33447D, use white for the best readability.

What is the closest Tailwind color to #33447D?

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

What colors go well with #33447D?

#33447D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7F6D34. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #33447D below.

Is #33447D good for buttons?

#33447D works well for buttons and highlights, but use white text on #33447D — black text only reaches 2.26:1, below the 4.5:1 needed for normal-size labels.

Is #33447D the same as CSS darkslateblue?

No — #33447D is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#33447D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #33447D

Not just a swatch — here's how #33447D works with other colors. Named schemes with #33447D in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #33447D Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

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 #33447D Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #55679D

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 #33447D Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

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 #33447D Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 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 #F8F4EF Accent #33447D Secondary #676F84 Support #9D8F88 Ink #18140F

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 #33447D 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 27/100

Cool

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

Softness 35/100

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 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 65/100

High

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

Brand distinctiveness 27/100

Low

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

UI accent fit 70/100

High

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

Surface fit 29/100

Low

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

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #33447D

For UI

For branding

For interior

For fashion

People also use #33447D with

Air Force Blue Dark Slate Blue Olive 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 9.3:1. Use

Subtle surface Use #D4D9E8 for cards and hover fills. Tint 80

Avoid beside #3B347F — 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 #33447D 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: #33447D;
  --color-base-rgb: 51 68 125;
  --color-base-oklch: oklch(40.3% 0.098 269.2);
  --color-50: #F4F5FB;
  --color-100: #E2E6F4;
  --color-200: #C5CDE7;
  --color-300: #9CA9D3;
  --color-400: #7686BC;
  --color-500: #55679F;
  --color-600: #47537B;
  --color-700: #363E58;
  --color-800: #262B3B;
  --color-900: #191C24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F4F5FB',
    100: '#E2E6F4',
    200: '#C5CDE7',
    300: '#9CA9D3',
    400: '#7686BC',
    500: '#55679F',
    600: '#47537B',
    700: '#363E58',
    800: '#262B3B',
    900: '#191C24',
  },
}

$base: #33447D;
$base-ink: #FFFFFF;
$base-50: #F4F5FB;
$base-100: #E2E6F4;
$base-200: #C5CDE7;
$base-300: #9CA9D3;
$base-400: #7686BC;
$base-500: #55679F;
$base-600: #47537B;
$base-700: #363E58;
$base-800: #262B3B;
$base-900: #191C24;
$base-hover: #293765;
$base-subtle: #BDC5DD;

{
    "color": {
        "base": {
            "value": "#33447D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F5FB",
                "type": "color"
            },
            "100": {
                "value": "#E2E6F4",
                "type": "color"
            },
            "200": {
                "value": "#C5CDE7",
                "type": "color"
            },
            "300": {
                "value": "#9CA9D3",
                "type": "color"
            },
            "400": {
                "value": "#7686BC",
                "type": "color"
            },
            "500": {
                "value": "#55679F",
                "type": "color"
            },
            "600": {
                "value": "#47537B",
                "type": "color"
            },
            "700": {
                "value": "#363E58",
                "type": "color"
            },
            "800": {
                "value": "#262B3B",
                "type": "color"
            },
            "900": {
                "value": "#191C24",
                "type": "color"
            }
        }
    }
}