What color is #042C1D?

#042C1D is a very dark, vivid teal-green. In RGB it is rgb(4, 44, 29), and in HSL hsl(158, 83%, 9%).

Is #042C1D accessible as text?

On white, #042C1D has a contrast ratio of 15.18:1 (passes WCAG AA for body text); on black it is 1.38:1 (fails). For text placed on #042C1D, use white for the best readability.

What is the closest Tailwind color to #042C1D?

The nearest Tailwind CSS token is emerald-950 (#002C22).

What colors go well with #042C1D?

#042C1D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #2A0412. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #042C1D below.

Is #042C1D good for buttons?

#042C1D works well for buttons and highlights, but use white text on #042C1D — black text only reaches 1.38:1, below the 4.5:1 needed for normal-size labels.

Is #042C1D the same as CSS darkslategray?

No — #042C1D 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.

#042C1D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #042C1D

Not just a swatch — here's how #042C1D works with other colors. Named schemes with #042C1D in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #042C1D Secondary #496C3E Accent #AB6D00 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.

Coastal Morning Lead · 5 colors

Lead #042C1D Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3648

Sacramento Green 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 #042C1D Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

Sacramento Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Luxury Packaging Feature · 5 colors

Feature #042C1D Anchor #141210 Accent #BDA74C Secondary #202C26 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 #042C1D Secondary #3F4B45 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.

Build a working theme in the generator →

Color Lab

How #042C1D 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 44/100

Neutral

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

Softness 27/100

Low

Firm and assertive — carries weight and contrast.

Depth 71/100

High

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

Naturalness 46/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 73/100

High

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

Brand distinctiveness 20/100

Low

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

UI accent fit 21/100

Low

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

Surface fit 52/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 90/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #042C1D

For UI

For branding

For interior

For fashion

People also use #042C1D with

Castleton Green Graphite Platinum Dark Slate Gray

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 15.2:1. Use

Subtle surface Use #B5ECD8 for cards and hover fills. Tint 80

Avoid beside #042A29 — 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 #042C1D 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: #042C1D;
  --color-base-rgb: 4 44 29;
  --color-base-oklch: oklch(26.1% 0.052 163.3);
  --color-50: #F0FEF9;
  --color-100: #D9FDEF;
  --color-200: #B4F8DF;
  --color-300: #82EDC6;
  --color-400: #54DEAB;
  --color-500: #31C38E;
  --color-600: #2D956F;
  --color-700: #266950;
  --color-800: #1C4436;
  --color-900: #132A22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  sacramento-green: {
    50: '#F0FEF9',
    100: '#D9FDEF',
    200: '#B4F8DF',
    300: '#82EDC6',
    400: '#54DEAB',
    500: '#31C38E',
    600: '#2D956F',
    700: '#266950',
    800: '#1C4436',
    900: '#132A22',
  },
}

$base: #042C1D;
$base-ink: #FFFFFF;
$base-50: #F0FEF9;
$base-100: #D9FDEF;
$base-200: #B4F8DF;
$base-300: #82EDC6;
$base-400: #54DEAB;
$base-500: #31C38E;
$base-600: #2D956F;
$base-700: #266950;
$base-800: #1C4436;
$base-900: #132A22;
$base-hover: #032216;
$base-subtle: #8DE5C5;

{
    "color": {
        "base": {
            "value": "#042C1D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEF9",
                "type": "color"
            },
            "100": {
                "value": "#D9FDEF",
                "type": "color"
            },
            "200": {
                "value": "#B4F8DF",
                "type": "color"
            },
            "300": {
                "value": "#82EDC6",
                "type": "color"
            },
            "400": {
                "value": "#54DEAB",
                "type": "color"
            },
            "500": {
                "value": "#31C38E",
                "type": "color"
            },
            "600": {
                "value": "#2D956F",
                "type": "color"
            },
            "700": {
                "value": "#266950",
                "type": "color"
            },
            "800": {
                "value": "#1C4436",
                "type": "color"
            },
            "900": {
                "value": "#132A22",
                "type": "color"
            }
        }
    }
}