What color is #1B381F?

#1B381F is a very dark green. In RGB it is rgb(27, 56, 31), and in HSL hsl(128, 35%, 16%).

Is #1B381F accessible as text?

On white, #1B381F has a contrast ratio of 12.87:1 (passes WCAG AA for body text); on black it is 1.63:1 (fails). For text placed on #1B381F, use white for the best readability.

What is the closest Tailwind color to #1B381F?

The nearest Tailwind CSS token is lime-950 (#192E03).

What colors go well with #1B381F?

#1B381F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #371B33. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1B381F below.

Is #1B381F good for buttons?

#1B381F works well for buttons and highlights, but use white text on #1B381F — black text only reaches 1.63:1, below the 4.5:1 needed for normal-size labels.

Is #1B381F the same as CSS darkslategray?

No — #1B381F 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.

#1B381F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1B381F

Not just a swatch — here's how #1B381F works with other colors. Named schemes with #1B381F in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #1B381F Secondary #4C6B3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

Sacramento Green 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 #1B381F Secondary #754E1B Surface #E6DBC0 Accent #3C5140 Anchor #5B2322

Sacramento Green 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 #1B381F Surface #EEE9DC Highlight #F5F1E7 Secondary #B6B09F Ink #2B2723

Sacramento Green 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 #1B381F Anchor #141210 Accent #C0A64B Secondary #222C23 Surface #F1EDE3

Sacramento Green 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 #1B381F Secondary #4E584F Support #989286 Ink #17140F

Sacramento Green 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 Sacramento Green carrying the quiet middle.

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Color Lab

How #1B381F 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 48/100

Neutral

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

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

High

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

Naturalness 71/100

High

Organic, earthy character — at home in wellness, food and craft brands.

Vintage feel 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 69/100

High

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

Brand distinctiveness 22/100

Low

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

UI accent fit 33/100

Low

Workable accent with care around contrast.

Surface fit 48/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #1B381F

For UI

For branding

For interior

For fashion

People also use #1B381F with

Army Green Bottle Green Russian Violet Platinum Hunter Green

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 12.9:1. Use

Subtle surface Use #C9DFCC for cards and hover fills. Tint 80

Avoid beside #1B3728 — 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 #1B381F 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: #1B381F;
  --color-base-rgb: 27 56 31;
  --color-base-oklch: oklch(31.0% 0.057 147.2);
  --color-50: #F4FAF5;
  --color-100: #E3F2E5;
  --color-200: #C8E4CC;
  --color-300: #A1CEA7;
  --color-400: #7CB684;
  --color-500: #5C9964;
  --color-600: #4B7751;
  --color-700: #39563D;
  --color-800: #28392A;
  --color-900: #1A231B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  sacramento-green: {
    50: '#F4FAF5',
    100: '#E3F2E5',
    200: '#C8E4CC',
    300: '#A1CEA7',
    400: '#7CB684',
    500: '#5C9964',
    600: '#4B7751',
    700: '#39563D',
    800: '#28392A',
    900: '#1A231B',
  },
}

$base: #1B381F;
$base-ink: #FFFFFF;
$base-50: #F4FAF5;
$base-100: #E3F2E5;
$base-200: #C8E4CC;
$base-300: #A1CEA7;
$base-400: #7CB684;
$base-500: #5C9964;
$base-600: #4B7751;
$base-700: #39563D;
$base-800: #28392A;
$base-900: #1A231B;
$base-hover: #152C18;
$base-subtle: #AED0B2;

{
    "color": {
        "base": {
            "value": "#1B381F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FAF5",
                "type": "color"
            },
            "100": {
                "value": "#E3F2E5",
                "type": "color"
            },
            "200": {
                "value": "#C8E4CC",
                "type": "color"
            },
            "300": {
                "value": "#A1CEA7",
                "type": "color"
            },
            "400": {
                "value": "#7CB684",
                "type": "color"
            },
            "500": {
                "value": "#5C9964",
                "type": "color"
            },
            "600": {
                "value": "#4B7751",
                "type": "color"
            },
            "700": {
                "value": "#39563D",
                "type": "color"
            },
            "800": {
                "value": "#28392A",
                "type": "color"
            },
            "900": {
                "value": "#1A231B",
                "type": "color"
            }
        }
    }
}

Palettes built on #1B381F

Color Lab

Pairs with #1B381F

UI roles & guardrails

In real applications

Scales

Every model

Export