What color is #357ADA?

#357ADA is a medium blue. In RGB it is rgb(53, 122, 218), and in HSL hsl(215, 69%, 53%).

Is #357ADA accessible as text?

On white, #357ADA has a contrast ratio of 4.24:1 (fails WCAG AA for body text); on black it is 4.95:1 (passes). For text placed on #357ADA, use black for the best readability.

What is the closest Tailwind color to #357ADA?

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

What colors go well with #357ADA?

#357ADA pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DA9534. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #357ADA below.

Is #357ADA good for buttons?

#357ADA works well for buttons and highlights, but use black text on #357ADA — white text only reaches 4.24:1, below the 4.5:1 needed for normal-size labels.

Is #357ADA the same as CSS royalblue?

No — #357ADA is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#357ADA Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #357ADA

Not just a swatch — here's how #357ADA works with other colors. Named schemes with #357ADA in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #357ADA 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 #357ADA Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #63A1FA

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 #357ADA Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57223B

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 #357ADA Surface #EDE9D6 Anchor #5A2144 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 #357ADA Secondary #90A8CA 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 #357ADA 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 7/100

Cool

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

Softness 41/100

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 35/100

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 93/100

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 67/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #357ADA

For UI

For branding

For interior

For fashion

People also use #357ADA with

Turquoise Han Purple Butterscotch Gainsboro Charcoal

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

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 4.4:1. Use

Subtle surface Use #DBE5F3 for cards and hover fills. Tint 80

Avoid beside #3442DA — 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 #357ADA 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: #357ADA;
  --color-base-rgb: 53 122 218;
  --color-base-oklch: oklch(58.6% 0.162 257.5);
  --color-50: #F2F6FD;
  --color-100: #DCE8F9;
  --color-200: #BAD2F2;
  --color-300: #8BB0E4;
  --color-400: #608FD2;
  --color-500: #3E70B7;
  --color-600: #365A8C;
  --color-700: #2C4363;
  --color-800: #202E41;
  --color-900: #151D28;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F2F6FD',
    100: '#DCE8F9',
    200: '#BAD2F2',
    300: '#8BB0E4',
    400: '#608FD2',
    500: '#3E70B7',
    600: '#365A8C',
    700: '#2C4363',
    800: '#202E41',
    900: '#151D28',
  },
}

$base: #357ADA;
$base-ink: #141310;
$base-50: #F2F6FD;
$base-100: #DCE8F9;
$base-200: #BAD2F2;
$base-300: #8BB0E4;
$base-400: #608FD2;
$base-500: #3E70B7;
$base-600: #365A8C;
$base-700: #2C4363;
$base-800: #202E41;
$base-900: #151D28;
$base-hover: #2260B7;
$base-subtle: #C8D8EE;

{
    "color": {
        "base": {
            "value": "#357ADA",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F6FD",
                "type": "color"
            },
            "100": {
                "value": "#DCE8F9",
                "type": "color"
            },
            "200": {
                "value": "#BAD2F2",
                "type": "color"
            },
            "300": {
                "value": "#8BB0E4",
                "type": "color"
            },
            "400": {
                "value": "#608FD2",
                "type": "color"
            },
            "500": {
                "value": "#3E70B7",
                "type": "color"
            },
            "600": {
                "value": "#365A8C",
                "type": "color"
            },
            "700": {
                "value": "#2C4363",
                "type": "color"
            },
            "800": {
                "value": "#202E41",
                "type": "color"
            },
            "900": {
                "value": "#151D28",
                "type": "color"
            }
        }
    }
}

Palettes built on #357ADA

Color Lab

Pairs with #357ADA

UI roles & guardrails

In real applications

Scales

Every model

Export