What color is #033DDA?

#033DDA is a medium, vivid blue. In RGB it is rgb(3, 61, 218), and in HSL hsl(224, 97%, 43%).

Is #033DDA accessible as text?

On white, #033DDA 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 #033DDA, use white for the best readability.

What is the closest Tailwind color to #033DDA?

The nearest Tailwind CSS token is blue-700 (#1447E6).

What colors go well with #033DDA?

#033DDA pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #D89F03. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #033DDA below.

Is #033DDA good for buttons?

#033DDA works well for buttons and highlights, but use white text on #033DDA — black text only reaches 2.68:1, below the 4.5:1 needed for normal-size labels.

Is #033DDA the same as CSS blue?

No — #033DDA is not the CSS named color blue, but blue (#0000FF) is the closest CSS named color.

#033DDA Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #033DDA

Not just a swatch — here's how #033DDA works with other colors. Named schemes with #033DDA in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #033DDA Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #316CF7

Sapphire 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 Sapphire Blue.

Coastal Morning Lead · 5 colors

Lead #033DDA Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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

Berry & Cream Lead · 5 colors

Lead #033DDA Surface #F6E5D8 Anchor #5B2144 Accent #E4C2CA Secondary #322B2F

Sapphire 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 #033DDA Secondary #657FB2 Support #9D8F88 Ink #18140F

Sapphire 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 Sapphire Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #033DDA Secondary #E76A75 Accent #F79251 Anchor #573B58 Surface #F7E7D7

Sapphire Blue glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Build a working theme in the generator →

Color Lab

How #033DDA 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 25/100

Low

Firm and assertive — carries weight and contrast.

Depth 60/100

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 10/100

Very low

Clean and current — no dusty, aged cast.

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 93/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 60/100

High

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

Surface fit 10/100

Very low

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

Print safety 55/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #033DDA

For UI

For branding

For interior

For fashion

People also use #033DDA with

Bright Sky Ultramarine Dijon 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 #CED8F6 for cards and hover fills. Tint 80

Avoid beside #1103D8 — 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 #033DDA 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: #033DDA;
  --color-base-rgb: 3 61 218;
  --color-base-oklch: oklch(45.7% 0.241 263.6);
  --color-50: #F0F4FE;
  --color-100: #D8E2FD;
  --color-200: #B1C5FC;
  --color-300: #799AF6;
  --color-400: #4974E9;
  --color-500: #2553D0;
  --color-600: #25459D;
  --color-700: #20356F;
  --color-800: #192648;
  --color-900: #11182C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  sapphire-blue: {
    50: '#F0F4FE',
    100: '#D8E2FD',
    200: '#B1C5FC',
    300: '#799AF6',
    400: '#4974E9',
    500: '#2553D0',
    600: '#25459D',
    700: '#20356F',
    800: '#192648',
    900: '#11182C',
  },
}

$base: #033DDA;
$base-ink: #FFFFFF;
$base-50: #F0F4FE;
$base-100: #D8E2FD;
$base-200: #B1C5FC;
$base-300: #799AF6;
$base-400: #4974E9;
$base-500: #2553D0;
$base-600: #25459D;
$base-700: #20356F;
$base-800: #192648;
$base-900: #11182C;
$base-hover: #0330AD;
$base-subtle: #B3C4F4;

{
    "color": {
        "base": {
            "value": "#033DDA",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F4FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E2FD",
                "type": "color"
            },
            "200": {
                "value": "#B1C5FC",
                "type": "color"
            },
            "300": {
                "value": "#799AF6",
                "type": "color"
            },
            "400": {
                "value": "#4974E9",
                "type": "color"
            },
            "500": {
                "value": "#2553D0",
                "type": "color"
            },
            "600": {
                "value": "#25459D",
                "type": "color"
            },
            "700": {
                "value": "#20356F",
                "type": "color"
            },
            "800": {
                "value": "#192648",
                "type": "color"
            },
            "900": {
                "value": "#11182C",
                "type": "color"
            }
        }
    }
}

Palettes built on #033DDA

Color Lab

Pairs with #033DDA

UI roles & guardrails

In real applications

Scales

Every model

Export