What color is #3E73BB?

#3E73BB is a medium blue. In RGB it is rgb(62, 115, 187), and in HSL hsl(215, 50%, 49%).

Is #3E73BB accessible as text?

On white, #3E73BB has a contrast ratio of 4.80:1 (passes WCAG AA for body text); on black it is 4.37:1 (fails). For text placed on #3E73BB, use white for the best readability.

What is the closest Tailwind color to #3E73BB?

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

What colors go well with #3E73BB?

#3E73BB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BB873E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3E73BB below.

Is #3E73BB good for buttons?

#3E73BB works well for buttons and highlights, but use white text on #3E73BB — black text only reaches 4.37:1, below the 4.5:1 needed for normal-size labels.

Is #3E73BB the same as CSS steelblue?

No — #3E73BB is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#3E73BB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3E73BB

Not just a swatch — here's how #3E73BB works with other colors. Named schemes with #3E73BB in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3E73BB 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 #3E73BB Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #6798DB

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 #3E73BB Secondary #7F4537 Surface #E1DDC1 Accent #375246 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 #3E73BB Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CA 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 #3E73BB Secondary #8B9EB8 Support #9D8F89 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 #3E73BB 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 16/100

Cool

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

Softness 44/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 45/100

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 49/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 34/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 98/100

Very high

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

Surface fit 19/100

Very low

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

Print safety 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #3E73BB

For UI

For branding

For interior

For fashion

People also use #3E73BB with

Medium Turquoise Cerulean Dark Goldenrod Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

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 4.8:1. Use

Subtle surface Use #DCE3EE for cards and hover fills. Tint 80

Avoid beside #3E49BB — 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 #3E73BB 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: #3E73BB;
  --color-base-rgb: 62 115 187;
  --color-base-oklch: oklch(55.4% 0.126 256.6);
  --color-50: #F3F7FC;
  --color-100: #E0E9F5;
  --color-200: #C2D3EB;
  --color-300: #97B2D8;
  --color-400: #7092C2;
  --color-500: #4E73A6;
  --color-600: #425C80;
  --color-700: #33445C;
  --color-800: #242E3C;
  --color-900: #181D25;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F3F7FC',
    100: '#E0E9F5',
    200: '#C2D3EB',
    300: '#97B2D8',
    400: '#7092C2',
    500: '#4E73A6',
    600: '#425C80',
    700: '#33445C',
    800: '#242E3C',
    900: '#181D25',
  },
}

$base: #3E73BB;
$base-ink: #FFFFFF;
$base-50: #F3F7FC;
$base-100: #E0E9F5;
$base-200: #C2D3EB;
$base-300: #97B2D8;
$base-400: #7092C2;
$base-500: #4E73A6;
$base-600: #425C80;
$base-700: #33445C;
$base-800: #242E3C;
$base-900: #181D25;
$base-hover: #325C96;
$base-subtle: #C9D6E7;

{
    "color": {
        "base": {
            "value": "#3E73BB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F7FC",
                "type": "color"
            },
            "100": {
                "value": "#E0E9F5",
                "type": "color"
            },
            "200": {
                "value": "#C2D3EB",
                "type": "color"
            },
            "300": {
                "value": "#97B2D8",
                "type": "color"
            },
            "400": {
                "value": "#7092C2",
                "type": "color"
            },
            "500": {
                "value": "#4E73A6",
                "type": "color"
            },
            "600": {
                "value": "#425C80",
                "type": "color"
            },
            "700": {
                "value": "#33445C",
                "type": "color"
            },
            "800": {
                "value": "#242E3C",
                "type": "color"
            },
            "900": {
                "value": "#181D25",
                "type": "color"
            }
        }
    }
}

Palettes built on #3E73BB

Color Lab

Pairs with #3E73BB

UI roles & guardrails

In real applications

Scales

Every model

Export