What color is #1F3042?

#1F3042 is a dark blue. In RGB it is rgb(31, 48, 66), and in HSL hsl(211, 36%, 19%).

Is #1F3042 accessible as text?

On white, #1F3042 has a contrast ratio of 13.46:1 (passes WCAG AA for body text); on black it is 1.56:1 (fails). For text placed on #1F3042, use white for the best readability.

What is the closest Tailwind color to #1F3042?

The nearest Tailwind CSS token is cyan-950 (#053345).

What colors go well with #1F3042?

#1F3042 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #42311F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1F3042 below.

Is #1F3042 good for buttons?

#1F3042 works well for buttons and highlights, but use white text on #1F3042 — black text only reaches 1.56:1, below the 4.5:1 needed for normal-size labels.

Is #1F3042 the same as CSS darkslategray?

No — #1F3042 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#1F3042 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1F3042

Not just a swatch — here's how #1F3042 works with other colors. Named schemes with #1F3042 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #1F3042 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Gunmetal Gray 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 #1F3042 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Gunmetal Gray 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 #1F3042 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3F5061

Gunmetal Gray is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Gunmetal Gray.

Vintage Leather Lead · 5 colors

Lead #1F3042 Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

Gunmetal Gray 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 #1F3042 Secondary #4E545B Support #959386 Ink #16140F

Gunmetal Gray 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 Gunmetal Gray carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #1F3042 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 39/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

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 28/100

Low

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 15/100

Very low

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

UI accent fit 27/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 53/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 91/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #1F3042

For UI

For branding

For interior

For fashion

People also use #1F3042 with

Feldgrau Russian Violet Bistre 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 13.5:1. Use

Subtle surface Use #CBD5E0 for cards and hover fills. Tint 80

Avoid beside #1F2442 — 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 #1F3042 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: #1F3042;
  --color-base-rgb: 31 48 66;
  --color-base-oklch: oklch(30.3% 0.040 250.6);
  --color-50: #F4F7FA;
  --color-100: #E3EAF2;
  --color-200: #C8D6E5;
  --color-300: #A0B7CF;
  --color-400: #7B98B7;
  --color-500: #5B799A;
  --color-600: #4A6077;
  --color-700: #394756;
  --color-800: #283039;
  --color-900: #1A1E23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F4F7FA',
    100: '#E3EAF2',
    200: '#C8D6E5',
    300: '#A0B7CF',
    400: '#7B98B7',
    500: '#5B799A',
    600: '#4A6077',
    700: '#394756',
    800: '#283039',
    900: '#1A1E23',
  },
}

$base: #1F3042;
$base-ink: #FFFFFF;
$base-50: #F4F7FA;
$base-100: #E3EAF2;
$base-200: #C8D6E5;
$base-300: #A0B7CF;
$base-400: #7B98B7;
$base-500: #5B799A;
$base-600: #4A6077;
$base-700: #394756;
$base-800: #283039;
$base-900: #1A1E23;
$base-hover: #192635;
$base-subtle: #B0C0D2;

{
    "color": {
        "base": {
            "value": "#1F3042",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F7FA",
                "type": "color"
            },
            "100": {
                "value": "#E3EAF2",
                "type": "color"
            },
            "200": {
                "value": "#C8D6E5",
                "type": "color"
            },
            "300": {
                "value": "#A0B7CF",
                "type": "color"
            },
            "400": {
                "value": "#7B98B7",
                "type": "color"
            },
            "500": {
                "value": "#5B799A",
                "type": "color"
            },
            "600": {
                "value": "#4A6077",
                "type": "color"
            },
            "700": {
                "value": "#394756",
                "type": "color"
            },
            "800": {
                "value": "#283039",
                "type": "color"
            },
            "900": {
                "value": "#1A1E23",
                "type": "color"
            }
        }
    }
}