What color is #143545?

#143545 is a very dark cyan-blue. In RGB it is rgb(20, 53, 69), and in HSL hsl(200, 55%, 17%).

Is #143545 accessible as text?

On white, #143545 has a contrast ratio of 12.92:1 (passes WCAG AA for body text); on black it is 1.62:1 (fails). For text placed on #143545, use white for the best readability.

What is the closest Tailwind color to #143545?

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

What colors go well with #143545?

#143545 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #432314. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #143545 below.

Is #143545 good for buttons?

#143545 works well for buttons and highlights, but use white text on #143545 — black text only reaches 1.62:1, below the 4.5:1 needed for normal-size labels.

Is #143545 the same as CSS darkslategray?

No — #143545 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#143545 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #143545

Not just a swatch — here's how #143545 works with other colors. Named schemes with #143545 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #143545 Accent #A6C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

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 #143545 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 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 #143545 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #385564

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 #143545 Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

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 #143545 Secondary #4D585E Support #969386 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 #143545 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 36/100

Cool

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

Softness 32/100

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 30/100

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 18/100

Very low

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

UI accent fit 31/100

Low

Workable accent with care around contrast.

Surface fit 50/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #143545

For UI

For branding

For interior

For fashion

People also use #143545 with

Hunter Green Navy Bistre Platinum 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 12.9:1. Use

Subtle surface Use #C4DAE5 for cards and hover fills. Tint 80

Avoid beside #142343 — 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 #143545 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: #143545;
  --color-base-rgb: 20 53 69;
  --color-base-oklch: oklch(31.2% 0.048 232.2);
  --color-50: #F3F9FC;
  --color-100: #DFEFF6;
  --color-200: #C0DEED;
  --color-300: #94C3DB;
  --color-400: #6BA8C7;
  --color-500: #4A8BAB;
  --color-600: #3F6C83;
  --color-700: #314F5E;
  --color-800: #23353E;
  --color-900: #172126;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F3F9FC',
    100: '#DFEFF6',
    200: '#C0DEED',
    300: '#94C3DB',
    400: '#6BA8C7',
    500: '#4A8BAB',
    600: '#3F6C83',
    700: '#314F5E',
    800: '#23353E',
    900: '#172126',
  },
}

$base: #143545;
$base-ink: #FFFFFF;
$base-50: #F3F9FC;
$base-100: #DFEFF6;
$base-200: #C0DEED;
$base-300: #94C3DB;
$base-400: #6BA8C7;
$base-500: #4A8BAB;
$base-600: #3F6C83;
$base-700: #314F5E;
$base-800: #23353E;
$base-900: #172126;
$base-hover: #102936;
$base-subtle: #A5C8DA;

{
    "color": {
        "base": {
            "value": "#143545",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F9FC",
                "type": "color"
            },
            "100": {
                "value": "#DFEFF6",
                "type": "color"
            },
            "200": {
                "value": "#C0DEED",
                "type": "color"
            },
            "300": {
                "value": "#94C3DB",
                "type": "color"
            },
            "400": {
                "value": "#6BA8C7",
                "type": "color"
            },
            "500": {
                "value": "#4A8BAB",
                "type": "color"
            },
            "600": {
                "value": "#3F6C83",
                "type": "color"
            },
            "700": {
                "value": "#314F5E",
                "type": "color"
            },
            "800": {
                "value": "#23353E",
                "type": "color"
            },
            "900": {
                "value": "#172126",
                "type": "color"
            }
        }
    }
}