What color is #2D4DAE?

#2D4DAE is a medium blue. In RGB it is rgb(45, 77, 174), and in HSL hsl(225, 59%, 43%).

Is #2D4DAE accessible as text?

On white, #2D4DAE has a contrast ratio of 7.54:1 (passes WCAG AA for body text); on black it is 2.78:1 (fails). For text placed on #2D4DAE, use white for the best readability.

What is the closest Tailwind color to #2D4DAE?

The nearest Tailwind CSS token is blue-800 (#193CB8).

What colors go well with #2D4DAE?

#2D4DAE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AE8E2D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2D4DAE below.

Is #2D4DAE good for buttons?

#2D4DAE works well for buttons and highlights, but use white text on #2D4DAE — black text only reaches 2.78:1, below the 4.5:1 needed for normal-size labels.

Is #2D4DAE the same as CSS darkslateblue?

No — #2D4DAE is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#2D4DAE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2D4DAE

Not just a swatch — here's how #2D4DAE works with other colors. Named schemes with #2D4DAE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #2D4DAE Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Sapphire 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 #2D4DAE Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #5173CD

Sapphire 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 Sapphire Blue.

Vintage Leather Lead · 5 colors

Lead #2D4DAE Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #58223A

Sapphire 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 #2D4DAE Surface #F6E5D8 Anchor #5B2144 Accent #E5C2CA Secondary #322B2F

Sapphire Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #2D4DAE Secondary #6F7EA1 Support #9D8F88 Ink #18140F

Sapphire 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 Sapphire Blue carrying the quiet middle.

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Color Lab

How #2D4DAE 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 12/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 57/100

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 58/100

Moderate

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

Brand distinctiveness 43/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 89/100

Very high

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

Surface fit 10/100

Very low

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

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #2D4DAE

For UI

For branding

For interior

For fashion

People also use #2D4DAE with

Picton Blue Rebecca Purple Dark Goldenrod 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 7.5:1. Use

Subtle surface Use #D6DCEE for cards and hover fills. Tint 80

Avoid beside #382DAE — 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 #2D4DAE at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #2D4DAE;
  --color-base-rgb: 45 77 174;
  --color-base-oklch: oklch(45.5% 0.160 266.3);
  --color-50: #F2F5FC;
  --color-100: #DEE4F7;
  --color-200: #BECAEE;
  --color-300: #92A5DE;
  --color-400: #6881CA;
  --color-500: #4660AE;
  --color-600: #3C4F86;
  --color-700: #303B5F;
  --color-800: #22293F;
  --color-900: #171B27;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  sapphire-blue: {
    50: '#F2F5FC',
    100: '#DEE4F7',
    200: '#BECAEE',
    300: '#92A5DE',
    400: '#6881CA',
    500: '#4660AE',
    600: '#3C4F86',
    700: '#303B5F',
    800: '#22293F',
    900: '#171B27',
  },
}

$base: #2D4DAE;
$base-ink: #FFFFFF;
$base-50: #F2F5FC;
$base-100: #DEE4F7;
$base-200: #BECAEE;
$base-300: #92A5DE;
$base-400: #6881CA;
$base-500: #4660AE;
$base-600: #3C4F86;
$base-700: #303B5F;
$base-800: #22293F;
$base-900: #171B27;
$base-hover: #243E8B;
$base-subtle: #C0CAE7;

{
    "color": {
        "base": {
            "value": "#2D4DAE",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F5FC",
                "type": "color"
            },
            "100": {
                "value": "#DEE4F7",
                "type": "color"
            },
            "200": {
                "value": "#BECAEE",
                "type": "color"
            },
            "300": {
                "value": "#92A5DE",
                "type": "color"
            },
            "400": {
                "value": "#6881CA",
                "type": "color"
            },
            "500": {
                "value": "#4660AE",
                "type": "color"
            },
            "600": {
                "value": "#3C4F86",
                "type": "color"
            },
            "700": {
                "value": "#303B5F",
                "type": "color"
            },
            "800": {
                "value": "#22293F",
                "type": "color"
            },
            "900": {
                "value": "#171B27",
                "type": "color"
            }
        }
    }
}

Palettes built on #2D4DAE

Color Lab

Pairs with #2D4DAE

UI roles & guardrails

In real applications

Scales

Every model

Export