What color is #404658?

#404658 is a dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(64, 70, 88), and in HSL hsl(225, 16%, 30%).

Is #404658 accessible as text?

On white, #404658 has a contrast ratio of 9.40:1 (passes WCAG AA for body text); on black it is 2.23:1 (fails). For text placed on #404658, use white for the best readability.

What is the closest Tailwind color to #404658?

The nearest Tailwind CSS token is gray-700 (#364153).

What colors go well with #404658?

As a neutral, #404658 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 #404658 the same as CSS darkslategray?

No — #404658 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.

#404658 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #404658

Not just a swatch — here's how #404658 works with other colors. Named schemes with #404658 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #404658 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Charcoal 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 #404658 Secondary #AEB4B8 Surface #F1F2F0 Support #7D92A7 Anchor #2E3236

Charcoal 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 #404658 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #616779

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

Vintage Leather Lead · 5 colors

Lead #404658 Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

Charcoal 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 #F8F4EF Accent #404658 Secondary #6B6D74 Support #9D8F88 Ink #18140F

Charcoal 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 Charcoal carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #404658 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 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 57/100

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 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 60/100

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 45/100

Moderate

Workable accent with care around contrast.

Surface fit 50/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 95/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #404658

For UI

For branding

For interior

For fashion

People also use #404658 with

Dim Gray Charcoal Umber Gainsboro

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 9.4:1. Use

Subtle surface Use #D7D9DF for cards and hover fills. Tint 80

Avoid beside #424059 — 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 #404658 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #404658;
  --color-base-rgb: 64 70 88;
  --color-base-oklch: oklch(39.6% 0.032 270.5);
  --color-50: #F6F7F9;
  --color-100: #E7E9EE;
  --color-200: #D0D3DD;
  --color-300: #ADB2C2;
  --color-400: #8C92A6;
  --color-500: #6C7388;
  --color-600: #575C6B;
  --color-700: #41444E;
  --color-800: #2D2F34;
  --color-900: #1C1E21;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F6F7F9',
    100: '#E7E9EE',
    200: '#D0D3DD',
    300: '#ADB2C2',
    400: '#8C92A6',
    500: '#6C7388',
    600: '#575C6B',
    700: '#41444E',
    800: '#2D2F34',
    900: '#1C1E21',
  },
}

$base: #404658;
$base-ink: #FFFFFF;
$base-50: #F6F7F9;
$base-100: #E7E9EE;
$base-200: #D0D3DD;
$base-300: #ADB2C2;
$base-400: #8C92A6;
$base-500: #6C7388;
$base-600: #575C6B;
$base-700: #41444E;
$base-800: #2D2F34;
$base-900: #1C1E21;
$base-hover: #333847;
$base-subtle: #C3C6D0;

{
    "color": {
        "base": {
            "value": "#404658",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F7F9",
                "type": "color"
            },
            "100": {
                "value": "#E7E9EE",
                "type": "color"
            },
            "200": {
                "value": "#D0D3DD",
                "type": "color"
            },
            "300": {
                "value": "#ADB2C2",
                "type": "color"
            },
            "400": {
                "value": "#8C92A6",
                "type": "color"
            },
            "500": {
                "value": "#6C7388",
                "type": "color"
            },
            "600": {
                "value": "#575C6B",
                "type": "color"
            },
            "700": {
                "value": "#41444E",
                "type": "color"
            },
            "800": {
                "value": "#2D2F34",
                "type": "color"
            },
            "900": {
                "value": "#1C1E21",
                "type": "color"
            }
        }
    }
}

Palettes built on #404658

Color Lab

Pairs with #404658

UI roles & guardrails

In real applications

Scales

Every model

Export