What color is #1C3A45?

#1C3A45 is a dark cyan-blue. In RGB it is rgb(28, 58, 69), and in HSL hsl(196, 42%, 19%).

Is #1C3A45 accessible as text?

On white, #1C3A45 has a contrast ratio of 12.07:1 (passes WCAG AA for body text); on black it is 1.74:1 (fails). For text placed on #1C3A45, use white for the best readability.

What is the closest Tailwind color to #1C3A45?

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

What colors go well with #1C3A45?

#1C3A45 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #45271C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1C3A45 below.

Is #1C3A45 good for buttons?

#1C3A45 works well for buttons and highlights, but use white text on #1C3A45 — black text only reaches 1.74:1, below the 4.5:1 needed for normal-size labels.

Is #1C3A45 the same as CSS darkslategray?

No — #1C3A45 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#1C3A45 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1C3A45

Not just a swatch — here's how #1C3A45 works with other colors. Named schemes with #1C3A45 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #1C3A45 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1E344A

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 #1C3A45 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A5 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 #1C3A45 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #3F5A65

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 #1C3A45 Secondary #6F5116 Surface #E2DCC0 Accent #385244 Anchor #56233E

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 #1C3A45 Secondary #535D61 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 #1C3A45 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

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 64/100

High

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

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 30/100

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 16/100

Very low

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

UI accent fit 33/100

Low

Workable accent with care around contrast.

Surface fit 51/100

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 #1C3A45

For UI

For branding

For interior

For fashion

People also use #1C3A45 with

Hunter Green Navy 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 12.1:1. Use

Subtle surface Use #C9DCE2 for cards and hover fills. Tint 80

Avoid beside #1C2C45 — 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 #1C3A45 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: #1C3A45;
  --color-base-rgb: 28 58 69;
  --color-base-oklch: oklch(33.0% 0.041 224.1);
  --color-50: #F4F9FB;
  --color-100: #E2EFF4;
  --color-200: #C5DEE7;
  --color-300: #9CC4D3;
  --color-400: #76A9BC;
  --color-500: #558C9F;
  --color-600: #476D7B;
  --color-700: #364F58;
  --color-800: #26353B;
  --color-900: #192124;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F4F9FB',
    100: '#E2EFF4',
    200: '#C5DEE7',
    300: '#9CC4D3',
    400: '#76A9BC',
    500: '#558C9F',
    600: '#476D7B',
    700: '#364F58',
    800: '#26353B',
    900: '#192124',
  },
}

$base: #1C3A45;
$base-ink: #FFFFFF;
$base-50: #F4F9FB;
$base-100: #E2EFF4;
$base-200: #C5DEE7;
$base-300: #9CC4D3;
$base-400: #76A9BC;
$base-500: #558C9F;
$base-600: #476D7B;
$base-700: #364F58;
$base-800: #26353B;
$base-900: #192124;
$base-hover: #162E37;
$base-subtle: #ADCAD5;

{
    "color": {
        "base": {
            "value": "#1C3A45",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F9FB",
                "type": "color"
            },
            "100": {
                "value": "#E2EFF4",
                "type": "color"
            },
            "200": {
                "value": "#C5DEE7",
                "type": "color"
            },
            "300": {
                "value": "#9CC4D3",
                "type": "color"
            },
            "400": {
                "value": "#76A9BC",
                "type": "color"
            },
            "500": {
                "value": "#558C9F",
                "type": "color"
            },
            "600": {
                "value": "#476D7B",
                "type": "color"
            },
            "700": {
                "value": "#364F58",
                "type": "color"
            },
            "800": {
                "value": "#26353B",
                "type": "color"
            },
            "900": {
                "value": "#192124",
                "type": "color"
            }
        }
    }
}