What color is #404C39?

#404C39 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(64, 76, 57), and in HSL hsl(98, 14%, 26%).

Is #404C39 accessible as text?

On white, #404C39 has a contrast ratio of 9.09:1 (passes WCAG AA for body text); on black it is 2.31:1 (fails). For text placed on #404C39, use white for the best readability.

What is the closest Tailwind color to #404C39?

The nearest Tailwind CSS token is stone-700 (#44403B).

What colors go well with #404C39?

As a neutral, #404C39 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 #404C39 the same as CSS darkslategray?

No — #404C39 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.

#404C39 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #404C39

Not just a swatch — here's how #404C39 works with other colors. Named schemes with #404C39 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #404C39 Secondary #4E6B3A Accent #AE6B00 Surface #EFEAD6 Anchor #3D2F21

Outer Space leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Vintage Leather Lead · 5 colors

Lead #404C39 Secondary #764D1C Surface #E6DBC0 Accent #3D513F Anchor #5B2323

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.

Modern Café Dominant · 5 colors

Dominant #404C39 Anchor #392B1E Surface #EDE4D0 Accent #899A6C Secondary #3A3833

Outer Space anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Japanese Sand Base · 5 colors

Base #404C39 Surface #EEE9DC Highlight #F5F1E7 Secondary #B7B09F Ink #2B2723

Outer Space sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #404C39 Secondary #6C7069 Support #999286 Ink #17140F

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 #404C39 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 51/100

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 51/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 45/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 60/100

High

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

Brand distinctiveness 13/100

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 48/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 92/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #404C39

For UI

For branding

For interior

For fashion

People also use #404C39 with

Ebony Dark Slate Gray Charcoal Platinum Outer Space

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 9.1:1. Use

Subtle surface Use #D8DDD5 for cards and hover fills. Tint 80

Avoid beside #3A4C39 — 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 #404C39 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: #404C39;
  --color-base-rgb: 64 76 57;
  --color-base-oklch: oklch(40.0% 0.035 134.1);
  --color-50: #F7F9F6;
  --color-100: #EAEEE8;
  --color-200: #D5DCD1;
  --color-300: #B5C1AF;
  --color-400: #96A58D;
  --color-500: #77876E;
  --color-600: #5F6A58;
  --color-700: #464D42;
  --color-800: #30342D;
  --color-900: #1E201D;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  outer-space: {
    50: '#F7F9F6',
    100: '#EAEEE8',
    200: '#D5DCD1',
    300: '#B5C1AF',
    400: '#96A58D',
    500: '#77876E',
    600: '#5F6A58',
    700: '#464D42',
    800: '#30342D',
    900: '#1E201D',
  },
}

$base: #404C39;
$base-ink: #FFFFFF;
$base-50: #F7F9F6;
$base-100: #EAEEE8;
$base-200: #D5DCD1;
$base-300: #B5C1AF;
$base-400: #96A58D;
$base-500: #77876E;
$base-600: #5F6A58;
$base-700: #464D42;
$base-800: #30342D;
$base-900: #1E201D;
$base-hover: #333C2E;
$base-subtle: #C5CCC0;

{
    "color": {
        "base": {
            "value": "#404C39",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F9F6",
                "type": "color"
            },
            "100": {
                "value": "#EAEEE8",
                "type": "color"
            },
            "200": {
                "value": "#D5DCD1",
                "type": "color"
            },
            "300": {
                "value": "#B5C1AF",
                "type": "color"
            },
            "400": {
                "value": "#96A58D",
                "type": "color"
            },
            "500": {
                "value": "#77876E",
                "type": "color"
            },
            "600": {
                "value": "#5F6A58",
                "type": "color"
            },
            "700": {
                "value": "#464D42",
                "type": "color"
            },
            "800": {
                "value": "#30342D",
                "type": "color"
            },
            "900": {
                "value": "#1E201D",
                "type": "color"
            }
        }
    }
}

Palettes built on #404C39

Color Lab

Pairs with #404C39

UI roles & guardrails

In real applications

Scales

Every model

Export