What color is #1F3737?

#1F3737 is a very dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(31, 55, 55), and in HSL hsl(180, 28%, 17%).

Is #1F3737 accessible as text?

On white, #1F3737 has a contrast ratio of 12.65:1 (passes WCAG AA for body text); on black it is 1.66:1 (fails). For text placed on #1F3737, use white for the best readability.

What is the closest Tailwind color to #1F3737?

The nearest Tailwind CSS token is gray-800 (#1E2939).

What colors go well with #1F3737?

As a neutral, #1F3737 pairs cleanly with white, off-white and light grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a dark surface or high-contrast base and let the accent carry the color.

Is #1F3737 the same as CSS darkslategray?

No — #1F3737 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#1F3737 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1F3737

Not just a swatch — here's how #1F3737 works with other colors. Named schemes with #1F3737 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #1F3737 Accent #A6C4BD Surface #E0DABE Secondary #9AA0A0 Anchor #1D3549

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 #1F3737 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A4 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.

Vintage Leather Lead · 5 colors

Lead #1F3737 Secondary #725018 Surface #E4DCC0 Accent #3A5142 Anchor #552340

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.

Luxury Packaging Feature · 5 colors

Feature #1F3737 Anchor #141210 Accent #B8AA4D Secondary #1D2C2C Surface #F1EDE3

Gunmetal Gray 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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #1F3737 Secondary #515959 Support #979286 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.

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Color Lab

How #1F3737 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 43/100

Neutral

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 64/100

High

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

Naturalness 6/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 28/100

Low

A faint retro warmth without tipping into sepia.

Luxury 66/100

High

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

Brand distinctiveness 12/100

Very low

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

UI accent fit 28/100

Low

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

Surface fit 55/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 92/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #1F3737

For UI

For branding

For interior

For fashion

People also use #1F3737 with

Brunswick Green Gunmetal Gray Bistre Platinum Dark Slate Gray

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 12.7:1. Use

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

Avoid beside #1F2F37 — 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 #1F3737 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

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: #1F3737;
  --color-base-rgb: 31 55 55;
  --color-base-oklch: oklch(31.7% 0.030 195.7);
  --color-50: #F5FAFA;
  --color-100: #E5F1F1;
  --color-200: #CBE2E2;
  --color-300: #A6CACA;
  --color-400: #82B0B0;
  --color-500: #629393;
  --color-600: #4F7272;
  --color-700: #3C5353;
  --color-800: #2A3737;
  --color-900: #1B2222;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F5FAFA',
    100: '#E5F1F1',
    200: '#CBE2E2',
    300: '#A6CACA',
    400: '#82B0B0',
    500: '#629393',
    600: '#4F7272',
    700: '#3C5353',
    800: '#2A3737',
    900: '#1B2222',
  },
}

$base: #1F3737;
$base-ink: #FFFFFF;
$base-50: #F5FAFA;
$base-100: #E5F1F1;
$base-200: #CBE2E2;
$base-300: #A6CACA;
$base-400: #82B0B0;
$base-500: #629393;
$base-600: #4F7272;
$base-700: #3C5353;
$base-800: #2A3737;
$base-900: #1B2222;
$base-hover: #192C2C;
$base-subtle: #B2CDCD;

{
    "color": {
        "base": {
            "value": "#1F3737",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5FAFA",
                "type": "color"
            },
            "100": {
                "value": "#E5F1F1",
                "type": "color"
            },
            "200": {
                "value": "#CBE2E2",
                "type": "color"
            },
            "300": {
                "value": "#A6CACA",
                "type": "color"
            },
            "400": {
                "value": "#82B0B0",
                "type": "color"
            },
            "500": {
                "value": "#629393",
                "type": "color"
            },
            "600": {
                "value": "#4F7272",
                "type": "color"
            },
            "700": {
                "value": "#3C5353",
                "type": "color"
            },
            "800": {
                "value": "#2A3737",
                "type": "color"
            },
            "900": {
                "value": "#1B2222",
                "type": "color"
            }
        }
    }
}