What color is #1B426A?

#1B426A is a dark blue. In RGB it is rgb(27, 66, 106), and in HSL hsl(210, 59%, 26%).

Is #1B426A accessible as text?

On white, #1B426A has a contrast ratio of 10.32:1 (passes WCAG AA for body text); on black it is 2.03:1 (fails). For text placed on #1B426A, use white for the best readability.

What is the closest Tailwind color to #1B426A?

The nearest Tailwind CSS token is sky-900 (#024A70).

What colors go well with #1B426A?

#1B426A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #69421B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1B426A below.

Is #1B426A good for buttons?

#1B426A works well for buttons and highlights, but use white text on #1B426A — black text only reaches 2.03:1, below the 4.5:1 needed for normal-size labels.

Is #1B426A the same as CSS darkslategray?

No — #1B426A is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#1B426A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1B426A

Not just a swatch — here's how #1B426A works with other colors. Named schemes with #1B426A in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #1B426A Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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

Nordic Calm Accent · 5 colors

Accent #1B426A Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Classic Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #1B426A Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #41648A

Classic 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 Classic Blue.

Vintage Leather Lead · 5 colors

Lead #1B426A Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

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 #F6F4EF Accent #1B426A Secondary #5B6877 Support #959386 Ink #16140F

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 #1B426A 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 27/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 66/100

High

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

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 57/100

Moderate

Workable accent with care around contrast.

Surface fit 36/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #1B426A

For UI

For branding

For interior

For fashion

People also use #1B426A with

Dark Cyan Midnight Blue Sepia 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 10.3:1. Use

Subtle surface Use #C9D9E9 for cards and hover fills. Tint 80

Avoid beside #1B2869 — 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 #1B426A 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: #1B426A;
  --color-base-rgb: 27 66 106;
  --color-base-oklch: oklch(37.2% 0.082 251.4);
  --color-50: #F2F7FC;
  --color-100: #DEEBF7;
  --color-200: #BED6EE;
  --color-300: #92B8DE;
  --color-400: #6899CA;
  --color-500: #467AAE;
  --color-600: #3C6186;
  --color-700: #30475F;
  --color-800: #22303F;
  --color-900: #171F27;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F2F7FC',
    100: '#DEEBF7',
    200: '#BED6EE',
    300: '#92B8DE',
    400: '#6899CA',
    500: '#467AAE',
    600: '#3C6186',
    700: '#30475F',
    800: '#22303F',
    900: '#171F27',
  },
}

$base: #1B426A;
$base-ink: #FFFFFF;
$base-50: #F2F7FC;
$base-100: #DEEBF7;
$base-200: #BED6EE;
$base-300: #92B8DE;
$base-400: #6899CA;
$base-500: #467AAE;
$base-600: #3C6186;
$base-700: #30475F;
$base-800: #22303F;
$base-900: #171F27;
$base-hover: #163554;
$base-subtle: #ADC6E0;

{
    "color": {
        "base": {
            "value": "#1B426A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F7FC",
                "type": "color"
            },
            "100": {
                "value": "#DEEBF7",
                "type": "color"
            },
            "200": {
                "value": "#BED6EE",
                "type": "color"
            },
            "300": {
                "value": "#92B8DE",
                "type": "color"
            },
            "400": {
                "value": "#6899CA",
                "type": "color"
            },
            "500": {
                "value": "#467AAE",
                "type": "color"
            },
            "600": {
                "value": "#3C6186",
                "type": "color"
            },
            "700": {
                "value": "#30475F",
                "type": "color"
            },
            "800": {
                "value": "#22303F",
                "type": "color"
            },
            "900": {
                "value": "#171F27",
                "type": "color"
            }
        }
    }
}