What color is #435259?

#435259 is a dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(67, 82, 89), and in HSL hsl(199, 14%, 31%).

Is #435259 accessible as text?

On white, #435259 has a contrast ratio of 8.11:1 (passes WCAG AA for body text); on black it is 2.59:1 (fails). For text placed on #435259, use white for the best readability.

What is the closest Tailwind color to #435259?

The nearest Tailwind CSS token is gray-600 (#4A5565).

What colors go well with #435259?

As a neutral, #435259 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 muted neutral, divider, icon or disabled-state color and let the accent carry the color.

Is #435259 the same as CSS darkslategray?

No — #435259 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.

#435259 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #435259

Not just a swatch — here's how #435259 works with other colors. Named schemes with #435259 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #435259 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Outer Space opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Tech Product Signal · 5 colors

Signal #435259 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #65747A

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

Nordic Calm Accent · 5 colors

Accent #435259 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 Anchor #2E3236

Outer Space 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 #435259 Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

Outer Space 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 #435259 Secondary #72787A Support #969386 Ink #16140F

Outer Space 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 Outer Space carrying the quiet middle.

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Color Lab

How #435259 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 45/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 54/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 31/100

Low

A faint retro warmth without tipping into sepia.

Luxury 57/100

Moderate

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

Brand distinctiveness 9/100

Very low

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

UI accent fit 47/100

Moderate

Workable accent with care around contrast.

Surface fit 50/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 94/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #435259

For UI

For branding

For interior

For fashion

People also use #435259 with

Dim Gray Outer Space Liver 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 8.1:1. Use

Subtle surface Use #D8DDDF for cards and hover fills. Tint 80

Avoid beside #444C5A — 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 #435259 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: #435259;
  --color-base-rgb: 67 82 89;
  --color-base-oklch: oklch(42.8% 0.022 227.8);
  --color-50: #F6F8F9;
  --color-100: #E8ECEE;
  --color-200: #D1D8DC;
  --color-300: #AFBBC1;
  --color-400: #8D9DA5;
  --color-500: #6E7F87;
  --color-600: #58646A;
  --color-700: #42494D;
  --color-800: #2D3234;
  --color-900: #1D1F20;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  outer-space: {
    50: '#F6F8F9',
    100: '#E8ECEE',
    200: '#D1D8DC',
    300: '#AFBBC1',
    400: '#8D9DA5',
    500: '#6E7F87',
    600: '#58646A',
    700: '#42494D',
    800: '#2D3234',
    900: '#1D1F20',
  },
}

$base: #435259;
$base-ink: #FFFFFF;
$base-50: #F6F8F9;
$base-100: #E8ECEE;
$base-200: #D1D8DC;
$base-300: #AFBBC1;
$base-400: #8D9DA5;
$base-500: #6E7F87;
$base-600: #58646A;
$base-700: #42494D;
$base-800: #2D3234;
$base-900: #1D1F20;
$base-hover: #364248;
$base-subtle: #C5CCD0;

{
    "color": {
        "base": {
            "value": "#435259",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F8F9",
                "type": "color"
            },
            "100": {
                "value": "#E8ECEE",
                "type": "color"
            },
            "200": {
                "value": "#D1D8DC",
                "type": "color"
            },
            "300": {
                "value": "#AFBBC1",
                "type": "color"
            },
            "400": {
                "value": "#8D9DA5",
                "type": "color"
            },
            "500": {
                "value": "#6E7F87",
                "type": "color"
            },
            "600": {
                "value": "#58646A",
                "type": "color"
            },
            "700": {
                "value": "#42494D",
                "type": "color"
            },
            "800": {
                "value": "#2D3234",
                "type": "color"
            },
            "900": {
                "value": "#1D1F20",
                "type": "color"
            }
        }
    }
}

Palettes built on #435259

Color Lab

Pairs with #435259

UI roles & guardrails

In real applications

Scales

Every model

Export