What color is #0F333A?

#0F333A is a very dark cyan. In RGB it is rgb(15, 51, 58), and in HSL hsl(190, 59%, 14%).

Is #0F333A accessible as text?

On white, #0F333A has a contrast ratio of 13.51:1 (passes WCAG AA for body text); on black it is 1.55:1 (fails). For text placed on #0F333A, use white for the best readability.

What is the closest Tailwind color to #0F333A?

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

What colors go well with #0F333A?

#0F333A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #39160F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0F333A below.

Is #0F333A good for buttons?

#0F333A works well for buttons and highlights, but use white text on #0F333A — black text only reaches 1.55:1, below the 4.5:1 needed for normal-size labels.

Is #0F333A the same as CSS darkslategray?

No — #0F333A is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#0F333A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0F333A

Not just a swatch — here's how #0F333A works with other colors. Named schemes with #0F333A in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0F333A Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1E3549

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 #0F333A Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 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 #0F333A Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #345259

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 #0F333A Secondary #705117 Surface #E3DCC0 Accent #395143 Anchor #56233F

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 #0F333A Secondary #495457 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.

Build a working theme in the generator →

Color Lab

How #0F333A 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 38/100

Neutral

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

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

Depth 67/100

High

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

Naturalness 2/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 28/100

Low

A faint retro warmth without tipping into sepia.

Luxury 69/100

High

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

Brand distinctiveness 16/100

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 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0F333A

For UI

For branding

For interior

For fashion

People also use #0F333A with

Castleton Green Navy Oxblood 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 13.5:1. Use

Subtle surface Use #C1E0E6 for cards and hover fills. Tint 80

Avoid beside #0F2439 — 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 #0F333A 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: #0F333A;
  --color-base-rgb: 15 51 58;
  --color-base-oklch: oklch(29.9% 0.042 212.7);
  --color-50: #F2FBFC;
  --color-100: #DEF3F7;
  --color-200: #BEE6EE;
  --color-300: #92D1DE;
  --color-400: #68BACA;
  --color-500: #469DAE;
  --color-600: #3C7986;
  --color-700: #30575F;
  --color-800: #223A3F;
  --color-900: #172427;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F2FBFC',
    100: '#DEF3F7',
    200: '#BEE6EE',
    300: '#92D1DE',
    400: '#68BACA',
    500: '#469DAE',
    600: '#3C7986',
    700: '#30575F',
    800: '#223A3F',
    900: '#172427',
  },
}

$base: #0F333A;
$base-ink: #FFFFFF;
$base-50: #F2FBFC;
$base-100: #DEF3F7;
$base-200: #BEE6EE;
$base-300: #92D1DE;
$base-400: #68BACA;
$base-500: #469DAE;
$base-600: #3C7986;
$base-700: #30575F;
$base-800: #223A3F;
$base-900: #172427;
$base-hover: #0C282D;
$base-subtle: #A0D1DB;

{
    "color": {
        "base": {
            "value": "#0F333A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FBFC",
                "type": "color"
            },
            "100": {
                "value": "#DEF3F7",
                "type": "color"
            },
            "200": {
                "value": "#BEE6EE",
                "type": "color"
            },
            "300": {
                "value": "#92D1DE",
                "type": "color"
            },
            "400": {
                "value": "#68BACA",
                "type": "color"
            },
            "500": {
                "value": "#469DAE",
                "type": "color"
            },
            "600": {
                "value": "#3C7986",
                "type": "color"
            },
            "700": {
                "value": "#30575F",
                "type": "color"
            },
            "800": {
                "value": "#223A3F",
                "type": "color"
            },
            "900": {
                "value": "#172427",
                "type": "color"
            }
        }
    }
}