What color is #1F4970?

#1F4970 is a dark blue. In RGB it is rgb(31, 73, 112), and in HSL hsl(209, 57%, 28%).

Is #1F4970 accessible as text?

On white, #1F4970 has a contrast ratio of 9.35:1 (passes WCAG AA for body text); on black it is 2.25:1 (fails). For text placed on #1F4970, use white for the best readability.

What is the closest Tailwind color to #1F4970?

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

What colors go well with #1F4970?

#1F4970 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #70461F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1F4970 below.

Is #1F4970 good for buttons?

#1F4970 works well for buttons and highlights, but use white text on #1F4970 — black text only reaches 2.25:1, below the 4.5:1 needed for normal-size labels.

Is #1F4970 the same as CSS darkslategray?

No — #1F4970 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#1F4970 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1F4970

Not just a swatch — here's how #1F4970 works with other colors. Named schemes with #1F4970 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #1F4970 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 #1F4970 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 #1F4970 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #456B90

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 #1F4970 Secondary #7F4438 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 #1F4970 Secondary #616F7E 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 #1F4970 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 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 59/100

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 45/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 22/100

Low

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

UI accent fit 63/100

High

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

Surface fit 35/100

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 #1F4970

For UI

For branding

For interior

For fashion

People also use #1F4970 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 9.4:1. Use

Subtle surface Use #CBDBE9 for cards and hover fills. Tint 80

Avoid beside #1F2E70 — 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 #1F4970 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: #1F4970;
  --color-base-rgb: 31 73 112;
  --color-base-oklch: oklch(39.6% 0.081 249.1);
  --color-50: #F3F8FC;
  --color-100: #DEEBF7;
  --color-200: #BFD7ED;
  --color-300: #93B9DC;
  --color-400: #6A9BC8;
  --color-500: #487CAD;
  --color-600: #3D6284;
  --color-700: #30485E;
  --color-800: #23313E;
  --color-900: #171F26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F3F8FC',
    100: '#DEEBF7',
    200: '#BFD7ED',
    300: '#93B9DC',
    400: '#6A9BC8',
    500: '#487CAD',
    600: '#3D6284',
    700: '#30485E',
    800: '#23313E',
    900: '#171F26',
  },
}

$base: #1F4970;
$base-ink: #FFFFFF;
$base-50: #F3F8FC;
$base-100: #DEEBF7;
$base-200: #BFD7ED;
$base-300: #93B9DC;
$base-400: #6A9BC8;
$base-500: #487CAD;
$base-600: #3D6284;
$base-700: #30485E;
$base-800: #23313E;
$base-900: #171F26;
$base-hover: #193A5A;
$base-subtle: #B0C9E0;

{
    "color": {
        "base": {
            "value": "#1F4970",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DEEBF7",
                "type": "color"
            },
            "200": {
                "value": "#BFD7ED",
                "type": "color"
            },
            "300": {
                "value": "#93B9DC",
                "type": "color"
            },
            "400": {
                "value": "#6A9BC8",
                "type": "color"
            },
            "500": {
                "value": "#487CAD",
                "type": "color"
            },
            "600": {
                "value": "#3D6284",
                "type": "color"
            },
            "700": {
                "value": "#30485E",
                "type": "color"
            },
            "800": {
                "value": "#23313E",
                "type": "color"
            },
            "900": {
                "value": "#171F26",
                "type": "color"
            }
        }
    }
}