What color is #3979AD?

#3979AD is a medium cyan-blue. In RGB it is rgb(57, 121, 173), and in HSL hsl(207, 50%, 45%).

Is #3979AD accessible as text?

On white, #3979AD has a contrast ratio of 4.65:1 (passes WCAG AA for body text); on black it is 4.51:1 (passes). For text placed on #3979AD, use white for the best readability.

What is the closest Tailwind color to #3979AD?

The nearest Tailwind CSS token is cyan-700 (#007595).

What colors go well with #3979AD?

#3979AD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AC6D39. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3979AD below.

Is #3979AD good for buttons?

#3979AD works for buttons; white text has the higher contrast, so prefer it for labels.

Is #3979AD the same as CSS steelblue?

No — #3979AD is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#3979AD Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3979AD

Not just a swatch — here's how #3979AD works with other colors. Named schemes with #3979AD in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3979AD Accent #A5C4C0 Surface #DEDBBF Secondary #9AA0A1 Anchor #20344A

Steel 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 #3979AD Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #659DCE

Steel 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 Steel Blue.

Vintage Leather Lead · 5 colors

Lead #3979AD Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

Steel 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 #3979AD Surface #EDE9D6 Anchor #5A2246 Accent #E4C2CB Secondary #322B2F

Steel 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 #3979AD Secondary #8CA1B4 Support #969386 Ink #16140F

Steel 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 Steel Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #3979AD 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 20/100

Cool

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

Softness 47/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 44/100

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 55/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 28/100

Low

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

UI accent fit 94/100

Very high

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

Surface fit 26/100

Low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #3979AD

For UI

For branding

For interior

For fashion

People also use #3979AD with

Robin Egg Blue Cobalt Blue Copper 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 4.7:1. Use

Subtle surface Use #D9E4ED for cards and hover fills. Tint 80

Avoid beside #3952AC — 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 #3979AD 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: #3979AD;
  --color-base-rgb: 57 121 173;
  --color-base-oklch: oklch(55.8% 0.104 245.8);
  --color-50: #F3F8FC;
  --color-100: #E0ECF5;
  --color-200: #C2D8EB;
  --color-300: #97BBD8;
  --color-400: #709DC2;
  --color-500: #4E7FA6;
  --color-600: #426480;
  --color-700: #33495C;
  --color-800: #24323C;
  --color-900: #181F25;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  steel-blue: {
    50: '#F3F8FC',
    100: '#E0ECF5',
    200: '#C2D8EB',
    300: '#97BBD8',
    400: '#709DC2',
    500: '#4E7FA6',
    600: '#426480',
    700: '#33495C',
    800: '#24323C',
    900: '#181F25',
  },
}

$base: #3979AD;
$base-ink: #FFFFFF;
$base-50: #F3F8FC;
$base-100: #E0ECF5;
$base-200: #C2D8EB;
$base-300: #97BBD8;
$base-400: #709DC2;
$base-500: #4E7FA6;
$base-600: #426480;
$base-700: #33495C;
$base-800: #24323C;
$base-900: #181F25;
$base-hover: #2E608A;
$base-subtle: #C5D7E5;

{
    "color": {
        "base": {
            "value": "#3979AD",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#E0ECF5",
                "type": "color"
            },
            "200": {
                "value": "#C2D8EB",
                "type": "color"
            },
            "300": {
                "value": "#97BBD8",
                "type": "color"
            },
            "400": {
                "value": "#709DC2",
                "type": "color"
            },
            "500": {
                "value": "#4E7FA6",
                "type": "color"
            },
            "600": {
                "value": "#426480",
                "type": "color"
            },
            "700": {
                "value": "#33495C",
                "type": "color"
            },
            "800": {
                "value": "#24323C",
                "type": "color"
            },
            "900": {
                "value": "#181F25",
                "type": "color"
            }
        }
    }
}

Palettes built on #3979AD

Color Lab

Pairs with #3979AD

UI roles & guardrails

In real applications

Scales

Every model

Export