What color is #203E79?

#203E79 is a dark blue. In RGB it is rgb(32, 62, 121), and in HSL hsl(220, 58%, 30%).

Is #203E79 accessible as text?

On white, #203E79 has a contrast ratio of 10.36:1 (passes WCAG AA for body text); on black it is 2.03:1 (fails). For text placed on #203E79, use white for the best readability.

What is the closest Tailwind color to #203E79?

The nearest Tailwind CSS token is blue-900 (#1C398E).

What colors go well with #203E79?

#203E79 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #795B20. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #203E79 below.

Is #203E79 good for buttons?

#203E79 works well for buttons and highlights, but use white text on #203E79 — black text only reaches 2.03:1, below the 4.5:1 needed for normal-size labels.

Is #203E79 the same as CSS darkslateblue?

No — #203E79 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#203E79 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #203E79

Not just a swatch — here's how #203E79 works with other colors. Named schemes with #203E79 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #203E79 Anchor #141210 Accent #ADAE53 Secondary #242933 Surface #F0EEE3

Classic Blue carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Moody Editorial Color · 5 colors

Color #203E79 Anchor #2A2A2E Secondary #6E6E74 Surface #E9E7DA Accent #1D1D46

Classic Blue adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Classic Blue.

Coastal Morning Lead · 5 colors

Lead #203E79 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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

Vintage Leather Lead · 5 colors

Lead #203E79 Secondary #7F4536 Surface #E1DDC1 Accent #375246 Anchor #57223A

Classic 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #203E79 Secondary #5C687E Support #9D8F88 Ink #18140F

Classic 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 Classic Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #203E79 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 23/100

Cool

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

Softness 32/100

Low

Middle-weight — neither delicate nor heavy.

Depth 63/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 42/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 41/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 63/100

High

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

Surface fit 28/100

Low

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

Print safety 80/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #203E79

For UI

For branding

For interior

For fashion

People also use #203E79 with

Dark Cyan Midnight Blue Raw Umber 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 10.4:1. Use

Subtle surface Use #CCD6EA for cards and hover fills. Tint 80

Avoid beside #202079 — 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 #203E79 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: #203E79;
  --color-base-rgb: 32 62 121;
  --color-base-oklch: oklch(37.5% 0.107 262.2);
  --color-50: #F2F6FC;
  --color-100: #DEE6F7;
  --color-200: #BFCEEE;
  --color-300: #92ABDD;
  --color-400: #6989C9;
  --color-500: #4769AD;
  --color-600: #3D5585;
  --color-700: #30405F;
  --color-800: #232C3E;
  --color-900: #171C26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F2F6FC',
    100: '#DEE6F7',
    200: '#BFCEEE',
    300: '#92ABDD',
    400: '#6989C9',
    500: '#4769AD',
    600: '#3D5585',
    700: '#30405F',
    800: '#232C3E',
    900: '#171C26',
  },
}

$base: #203E79;
$base-ink: #FFFFFF;
$base-50: #F2F6FC;
$base-100: #DEE6F7;
$base-200: #BFCEEE;
$base-300: #92ABDD;
$base-400: #6989C9;
$base-500: #4769AD;
$base-600: #3D5585;
$base-700: #30405F;
$base-800: #232C3E;
$base-900: #171C26;
$base-hover: #1A3161;
$base-subtle: #B2C2E1;

{
    "color": {
        "base": {
            "value": "#203E79",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F6FC",
                "type": "color"
            },
            "100": {
                "value": "#DEE6F7",
                "type": "color"
            },
            "200": {
                "value": "#BFCEEE",
                "type": "color"
            },
            "300": {
                "value": "#92ABDD",
                "type": "color"
            },
            "400": {
                "value": "#6989C9",
                "type": "color"
            },
            "500": {
                "value": "#4769AD",
                "type": "color"
            },
            "600": {
                "value": "#3D5585",
                "type": "color"
            },
            "700": {
                "value": "#30405F",
                "type": "color"
            },
            "800": {
                "value": "#232C3E",
                "type": "color"
            },
            "900": {
                "value": "#171C26",
                "type": "color"
            }
        }
    }
}

Palettes built on #203E79

Color Lab

Pairs with #203E79

UI roles & guardrails

In real applications

Scales

Every model

Export