What color is #03370A?

#03370A is a very dark, vivid green. In RGB it is rgb(3, 55, 10), and in HSL hsl(128, 90%, 11%).

Is #03370A accessible as text?

On white, #03370A has a contrast ratio of 13.51:1 (passes WCAG AA for body text); on black it is 1.55:1 (fails). For text placed on #03370A, use white for the best readability.

What is the closest Tailwind color to #03370A?

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

What colors go well with #03370A?

#03370A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #35032F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #03370A below.

Is #03370A good for buttons?

#03370A works well for buttons and highlights, but use white text on #03370A — black text only reaches 1.55:1, below the 4.5:1 needed for normal-size labels.

Is #03370A the same as CSS darkslategray?

No — #03370A 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.

#03370A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #03370A

Not just a swatch — here's how #03370A works with other colors. Named schemes with #03370A in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #03370A Secondary #4C6B3B Accent #AD6B00 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 #03370A 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 #03370A 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 #03370A Anchor #141210 Accent #C0A64B Secondary #232C23 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 #03370A Secondary #465646 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 #03370A 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 27/100

Low

Firm and assertive — carries weight and contrast.

Depth 70/100

High

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

Naturalness 100/100

Very high

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

Vintage feel 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 74/100

High

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

Brand distinctiveness 35/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 34/100

Low

Workable accent with care around contrast.

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 80/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #03370A

For UI

For branding

For interior

For fashion

People also use #03370A with

Dark Green Sacramento Green Deep Purple 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 13.5:1. Use

Subtle surface Use #B4EFBC for cards and hover fills. Tint 80

Avoid beside #03351A — 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 #03370A at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #03370A;
  --color-base-rgb: 3 55 10;
  --color-base-oklch: oklch(29.4% 0.089 144.8);
  --color-50: #F0FEF2;
  --color-100: #D8FDDD;
  --color-200: #B2FBBB;
  --color-300: #7EF28D;
  --color-400: #4FE362;
  --color-500: #2BCA40;
  --color-600: #299938;
  --color-700: #236C2D;
  --color-800: #1B4621;
  --color-900: #122B16;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  sacramento-green: {
    50: '#F0FEF2',
    100: '#D8FDDD',
    200: '#B2FBBB',
    300: '#7EF28D',
    400: '#4FE362',
    500: '#2BCA40',
    600: '#299938',
    700: '#236C2D',
    800: '#1B4621',
    900: '#122B16',
  },
}

$base: #03370A;
$base-ink: #FFFFFF;
$base-50: #F0FEF2;
$base-100: #D8FDDD;
$base-200: #B2FBBB;
$base-300: #7EF28D;
$base-400: #4FE362;
$base-500: #2BCA40;
$base-600: #299938;
$base-700: #236C2D;
$base-800: #1B4621;
$base-900: #122B16;
$base-hover: #022B08;
$base-subtle: #8CE999;

{
    "color": {
        "base": {
            "value": "#03370A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEF2",
                "type": "color"
            },
            "100": {
                "value": "#D8FDDD",
                "type": "color"
            },
            "200": {
                "value": "#B2FBBB",
                "type": "color"
            },
            "300": {
                "value": "#7EF28D",
                "type": "color"
            },
            "400": {
                "value": "#4FE362",
                "type": "color"
            },
            "500": {
                "value": "#2BCA40",
                "type": "color"
            },
            "600": {
                "value": "#299938",
                "type": "color"
            },
            "700": {
                "value": "#236C2D",
                "type": "color"
            },
            "800": {
                "value": "#1B4621",
                "type": "color"
            },
            "900": {
                "value": "#122B16",
                "type": "color"
            }
        }
    }
}