What color is #0381DA?

#0381DA is a medium, vivid cyan-blue. In RGB it is rgb(3, 129, 218), and in HSL hsl(205, 97%, 43%).

Is #0381DA accessible as text?

On white, #0381DA has a contrast ratio of 4.07:1 (fails WCAG AA for body text); on black it is 5.16:1 (passes). For text placed on #0381DA, use black for the best readability.

What is the closest Tailwind color to #0381DA?

The nearest Tailwind CSS token is sky-600 (#0084D1).

What colors go well with #0381DA?

#0381DA pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #D85C03. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0381DA below.

Is #0381DA good for buttons?

#0381DA works well for buttons and highlights, but use black text on #0381DA — white text only reaches 4.07:1, below the 4.5:1 needed for normal-size labels.

Is #0381DA the same as CSS steelblue?

No — #0381DA is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#0381DA Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0381DA

Not just a swatch — here's how #0381DA works with other colors. Named schemes with #0381DA in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0381DA Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

True 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 #0381DA Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4FA7FA

True 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 True Blue.

Vintage Leather Lead · 5 colors

Lead #0381DA Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233B

True 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 #0381DA Surface #EDE9D6 Anchor #5A2245 Accent #E4C2CB Secondary #322B2F

True 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 #0381DA Secondary #8DACCC Support #959386 Ink #16140F

True 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 True Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #0381DA 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 4/100

Cool

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

Softness 42/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 43/100

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 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 46/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 44/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 91/100

Very high

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

Surface fit 16/100

Very low

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

Print safety 64/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #0381DA

For UI

For branding

For interior

For fashion

People also use #0381DA with

Aquamarine Medium Blue Ginger Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 4.6:1. Use

Subtle surface Use #CEE5F6 for cards and hover fills. Tint 80

Avoid beside #0338D8 — 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 #0381DA 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: #0381DA;
  --color-base-rgb: 3 129 218;
  --color-base-oklch: oklch(59.2% 0.164 249.4);
  --color-50: #F0F9FE;
  --color-100: #D8EEFD;
  --color-200: #B1DCFC;
  --color-300: #79C2F6;
  --color-400: #49A6E9;
  --color-500: #2589D0;
  --color-600: #256B9D;
  --color-700: #204E6F;
  --color-800: #193448;
  --color-900: #11212C;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F0F9FE',
    100: '#D8EEFD',
    200: '#B1DCFC',
    300: '#79C2F6',
    400: '#49A6E9',
    500: '#2589D0',
    600: '#256B9D',
    700: '#204E6F',
    800: '#193448',
    900: '#11212C',
  },
}

$base: #0381DA;
$base-ink: #141310;
$base-50: #F0F9FE;
$base-100: #D8EEFD;
$base-200: #B1DCFC;
$base-300: #79C2F6;
$base-400: #49A6E9;
$base-500: #2589D0;
$base-600: #256B9D;
$base-700: #204E6F;
$base-800: #193448;
$base-900: #11212C;
$base-hover: #0366AD;
$base-subtle: #B3D9F4;

{
    "color": {
        "base": {
            "value": "#0381DA",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F9FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EEFD",
                "type": "color"
            },
            "200": {
                "value": "#B1DCFC",
                "type": "color"
            },
            "300": {
                "value": "#79C2F6",
                "type": "color"
            },
            "400": {
                "value": "#49A6E9",
                "type": "color"
            },
            "500": {
                "value": "#2589D0",
                "type": "color"
            },
            "600": {
                "value": "#256B9D",
                "type": "color"
            },
            "700": {
                "value": "#204E6F",
                "type": "color"
            },
            "800": {
                "value": "#193448",
                "type": "color"
            },
            "900": {
                "value": "#11212C",
                "type": "color"
            }
        }
    }
}

Palettes built on #0381DA

Color Lab

Pairs with #0381DA

UI roles & guardrails

In real applications

Scales

Every model

Export