What color is #666541?

#666541 is a dark, muted yellow. In RGB it is rgb(102, 101, 65), and in HSL hsl(58, 22%, 33%).

Is #666541 accessible as text?

On white, #666541 has a contrast ratio of 6.00:1 (passes WCAG AA for body text); on black it is 3.50:1 (fails). For text placed on #666541, use white for the best readability.

What is the closest Tailwind color to #666541?

The nearest Tailwind CSS token is olive-600 (#5B5B4B).

What colors go well with #666541?

#666541 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #424367. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #666541 below.

Is #666541 good for buttons?

#666541 works well for buttons and highlights, but use white text on #666541 — black text only reaches 3.50:1, below the 4.5:1 needed for normal-size labels.

Is #666541 the same as CSS darkolivegreen?

No — #666541 is not the CSS named color darkolivegreen, but darkolivegreen (#556B2F) 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.

#666541 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #666541

Not just a swatch — here's how #666541 works with other colors. Named schemes with #666541 in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #666541 Secondary #B1690A Accent #6D7A48 Surface #F3ECDD Anchor #3A2B1F

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

Modern Café Dominant · 5 colors

Dominant #666541 Anchor #392B1F Surface #EEE3D0 Accent #8C996A Secondary #3B3833

Dark Olive Green anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Vintage Leather Lead · 5 colors

Lead #666541 Secondary #774C1F Surface #E7DAC0 Accent #3E513E Anchor #5B2226

Dark Olive 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 #666541 Secondary #526A37 Accent #B1690A Surface #F0E9D6 Anchor #3D2F21

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

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #666541 Secondary #8D8D80 Support #999186 Ink #17140F

Dark Olive 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 Dark Olive Green carrying the quiet middle.

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Color Lab

How #666541 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 59/100

Neutral

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

Softness 48/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 48/100

Moderate

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

Naturalness 49/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 68/100

High

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

Luxury 53/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 20/100

Low

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

UI accent fit 72/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 36/100

Low

Usable as a tinted surface in measured doses.

Print safety 91/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #666541

For UI

For branding

For interior

For fashion

People also use #666541 with

Raw Umber Dark Olive Green Charcoal Platinum Army Green

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

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 6.0:1. Use

Subtle surface Use #E2E2D7 for cards and hover fills. Tint 80

Avoid beside #5C6742 — 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 #666541 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: #666541;
  --color-base-rgb: 102 101 65;
  --color-base-oklch: oklch(49.8% 0.053 106.8);
  --color-50: #F9F9F6;
  --color-100: #EFEFE6;
  --color-200: #DFDFCD;
  --color-300: #C6C5A9;
  --color-400: #ABAA87;
  --color-500: #8E8C67;
  --color-600: #6F6E53;
  --color-700: #50503F;
  --color-800: #36352B;
  --color-900: #22211C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-olive-green: {
    50: '#F9F9F6',
    100: '#EFEFE6',
    200: '#DFDFCD',
    300: '#C6C5A9',
    400: '#ABAA87',
    500: '#8E8C67',
    600: '#6F6E53',
    700: '#50503F',
    800: '#36352B',
    900: '#22211C',
  },
}

$base: #666541;
$base-ink: #FFFFFF;
$base-50: #F9F9F6;
$base-100: #EFEFE6;
$base-200: #DFDFCD;
$base-300: #C6C5A9;
$base-400: #ABAA87;
$base-500: #8E8C67;
$base-600: #6F6E53;
$base-700: #50503F;
$base-800: #36352B;
$base-900: #22211C;
$base-hover: #525135;
$base-subtle: #D4D4C3;

{
    "color": {
        "base": {
            "value": "#666541",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F9F9F6",
                "type": "color"
            },
            "100": {
                "value": "#EFEFE6",
                "type": "color"
            },
            "200": {
                "value": "#DFDFCD",
                "type": "color"
            },
            "300": {
                "value": "#C6C5A9",
                "type": "color"
            },
            "400": {
                "value": "#ABAA87",
                "type": "color"
            },
            "500": {
                "value": "#8E8C67",
                "type": "color"
            },
            "600": {
                "value": "#6F6E53",
                "type": "color"
            },
            "700": {
                "value": "#50503F",
                "type": "color"
            },
            "800": {
                "value": "#36352B",
                "type": "color"
            },
            "900": {
                "value": "#22211C",
                "type": "color"
            }
        }
    }
}

Palettes built on #666541

Color Lab

Pairs with #666541

UI roles & guardrails

In real applications

Scales

Every model

Export