What color is #40451B?

#40451B is a dark lime green. In RGB it is rgb(64, 69, 27), and in HSL hsl(67, 44%, 19%).

Is #40451B accessible as text?

On white, #40451B has a contrast ratio of 10.07:1 (passes WCAG AA for body text); on black it is 2.09:1 (fails). For text placed on #40451B, use white for the best readability.

What is the closest Tailwind color to #40451B?

The nearest Tailwind CSS token is olive-700 (#474739).

What colors go well with #40451B?

#40451B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #201B46. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #40451B below.

Is #40451B good for buttons?

#40451B works well for buttons and highlights, but use white text on #40451B — black text only reaches 2.09:1, below the 4.5:1 needed for normal-size labels.

Is #40451B the same as CSS darkslategray?

No — #40451B 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.

#40451B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #40451B

Not just a swatch — here's how #40451B works with other colors. Named schemes with #40451B in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #40451B Secondary #B06905 Accent #6C7B49 Surface #F2ECDD Anchor #3A2B1F

This palette keeps Army Green as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.

Vintage Leather Lead · 5 colors

Lead #40451B Secondary #774C1E Surface #E7DBC0 Accent #3E513E Anchor #5B2325

Army 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.

Botanical Studio Lead · 5 colors

Lead #40451B Secondary #516A38 Accent #B06905 Surface #EFE9D6 Anchor #3D2F21

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

Desert Clay Center · 5 colors

Center #40451B Surface #DED0A8 Secondary #AC7D50 Accent #8F9A72 Anchor #3D2D1F

Army Green holds the warm center of this desert palette with sand and clay beside it, a muted-sage accent and a dark-brown anchor.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #40451B Secondary #67695B Support #999186 Ink #17140F

Army 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 Army Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #40451B 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 58/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 60/100

High

Mid depth — usable as an accent or a muted ground.

Naturalness 68/100

High

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

Vintage feel 56/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 65/100

High

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

Brand distinctiveness 24/100

Low

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

UI accent fit 52/100

Moderate

Workable accent with care around contrast.

Surface fit 42/100

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 #40451B

For UI

For branding

For interior

For fashion

People also use #40451B with

Sepia British Racing Green Russian Violet Platinum Army 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 10.1:1. Use

Subtle surface Use #E0E3C9 for cards and hover fills. Tint 80

Avoid beside #33461B — 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 #40451B 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: #40451B;
  --color-base-rgb: 64 69 27;
  --color-base-oklch: oklch(37.5% 0.063 115.1);
  --color-50: #FAFBF4;
  --color-100: #F2F4E1;
  --color-200: #E4E8C4;
  --color-300: #CDD49B;
  --color-400: #B5BD75;
  --color-500: #98A154;
  --color-600: #767C46;
  --color-700: #555936;
  --color-800: #393B26;
  --color-900: #232519;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  army-green: {
    50: '#FAFBF4',
    100: '#F2F4E1',
    200: '#E4E8C4',
    300: '#CDD49B',
    400: '#B5BD75',
    500: '#98A154',
    600: '#767C46',
    700: '#555936',
    800: '#393B26',
    900: '#232519',
  },
}

$base: #40451B;
$base-ink: #FFFFFF;
$base-50: #FAFBF4;
$base-100: #F2F4E1;
$base-200: #E4E8C4;
$base-300: #CDD49B;
$base-400: #B5BD75;
$base-500: #98A154;
$base-600: #767C46;
$base-700: #555936;
$base-800: #393B26;
$base-900: #232519;
$base-hover: #343816;
$base-subtle: #D1D6AC;

{
    "color": {
        "base": {
            "value": "#40451B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FAFBF4",
                "type": "color"
            },
            "100": {
                "value": "#F2F4E1",
                "type": "color"
            },
            "200": {
                "value": "#E4E8C4",
                "type": "color"
            },
            "300": {
                "value": "#CDD49B",
                "type": "color"
            },
            "400": {
                "value": "#B5BD75",
                "type": "color"
            },
            "500": {
                "value": "#98A154",
                "type": "color"
            },
            "600": {
                "value": "#767C46",
                "type": "color"
            },
            "700": {
                "value": "#555936",
                "type": "color"
            },
            "800": {
                "value": "#393B26",
                "type": "color"
            },
            "900": {
                "value": "#232519",
                "type": "color"
            }
        }
    }
}

Palettes built on #40451B

Color Lab

Pairs with #40451B

UI roles & guardrails

In real applications

Scales

Every model

Export