What color is #37312B?

#37312B is a dark low-chroma warm gray with a subtle warm cast. In RGB it is rgb(55, 49, 43), and in HSL hsl(30, 12%, 19%).

Is #37312B accessible as text?

On white, #37312B has a contrast ratio of 12.83:1 (passes WCAG AA for body text); on black it is 1.64:1 (fails). For text placed on #37312B, use white for the best readability.

What is the closest Tailwind color to #37312B?

The nearest Tailwind CSS token is zinc-800 (#27272A).

What colors go well with #37312B?

As a neutral, #37312B 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 #37312B the same as CSS darkslategray?

No — #37312B 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.

#37312B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #37312B

Not just a swatch — here's how #37312B works with other colors. Named schemes with #37312B in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #37312B Surface #15161A Highlight #F4F6F8 Secondary #606473 Accent #57514B

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

Vintage Leather Lead · 5 colors

Lead #37312B Secondary #794A23 Surface #E9DAC0 Accent #41503C Anchor #5B222A

Bistre plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Japanese Sand Base · 5 colors

Base #37312B Surface #EFE9DC Highlight #F6F1E7 Secondary #B9AF9F Ink #2B2723

Bistre 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.

Luxury Packaging Feature · 5 colors

Feature #37312B Anchor #141210 Accent #CBA14C Secondary #30271E Surface #F2EDE3

Bistre carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #37312B Secondary #595755 Support #9A9186 Ink #17140F

Bistre 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 Bistre carrying the quiet middle.

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Color Lab

How #37312B 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 54/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 63/100

High

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

Naturalness 28/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 65/100

High

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

Brand distinctiveness 5/100

Very low

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

UI accent fit 24/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 60/100

High

Calm enough for large fills — backgrounds, cards, sections.

Print safety 98/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #37312B

For UI

For branding

For interior

For fashion

People also use #37312B with

Taupe Onyx Gunmetal Gray Platinum

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 12.8:1. Use

Subtle surface Use #D9D6D2 for cards and hover fills. Tint 80

Avoid beside #36342B — 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 #37312B 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: #37312B;
  --color-base-rgb: 55 49 43;
  --color-base-oklch: oklch(31.7% 0.014 67.3);
  --color-50: #F8F7F6;
  --color-100: #EDEBE8;
  --color-200: #DBD6D1;
  --color-300: #BFB8B0;
  --color-400: #A3998F;
  --color-500: #857A70;
  --color-600: #686159;
  --color-700: #4C4743;
  --color-800: #33302E;
  --color-900: #201F1D;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bistre: {
    50: '#F8F7F6',
    100: '#EDEBE8',
    200: '#DBD6D1',
    300: '#BFB8B0',
    400: '#A3998F',
    500: '#857A70',
    600: '#686159',
    700: '#4C4743',
    800: '#33302E',
    900: '#201F1D',
  },
}

$base: #37312B;
$base-ink: #FFFFFF;
$base-50: #F8F7F6;
$base-100: #EDEBE8;
$base-200: #DBD6D1;
$base-300: #BFB8B0;
$base-400: #A3998F;
$base-500: #857A70;
$base-600: #686159;
$base-700: #4C4743;
$base-800: #33302E;
$base-900: #201F1D;
$base-hover: #2B2722;
$base-subtle: #C7C1BB;

{
    "color": {
        "base": {
            "value": "#37312B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F7F6",
                "type": "color"
            },
            "100": {
                "value": "#EDEBE8",
                "type": "color"
            },
            "200": {
                "value": "#DBD6D1",
                "type": "color"
            },
            "300": {
                "value": "#BFB8B0",
                "type": "color"
            },
            "400": {
                "value": "#A3998F",
                "type": "color"
            },
            "500": {
                "value": "#857A70",
                "type": "color"
            },
            "600": {
                "value": "#686159",
                "type": "color"
            },
            "700": {
                "value": "#4C4743",
                "type": "color"
            },
            "800": {
                "value": "#33302E",
                "type": "color"
            },
            "900": {
                "value": "#201F1D",
                "type": "color"
            }
        }
    }
}

Palettes built on #37312B

Color Lab

Pairs with #37312B

UI roles & guardrails

In real applications

Scales

Every model

Export