What color is #666A8A?

#666A8A is a medium, muted blue-violet. In RGB it is rgb(102, 106, 138), and in HSL hsl(233, 15%, 47%).

Is #666A8A accessible as text?

On white, #666A8A has a contrast ratio of 5.26:1 (passes WCAG AA for body text); on black it is 3.99:1 (fails). For text placed on #666A8A, use white for the best readability.

What is the closest Tailwind color to #666A8A?

The nearest Tailwind CSS token is mauve-500 (#79697B).

What colors go well with #666A8A?

#666A8A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8A8666. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #666A8A below.

Is #666A8A good for buttons?

#666A8A works well for buttons and highlights, but use white text on #666A8A — black text only reaches 3.99:1, below the 4.5:1 needed for normal-size labels.

Is #666A8A the same as CSS dimgray?

No — #666A8A is not the CSS named color dimgray, but dimgray (#696969) 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.

#666A8A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #666A8A

Not just a swatch — here's how #666A8A works with other colors. Named schemes with #666A8A in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #666A8A Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

Dim Gray 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 #666A8A Secondary #AEB4B8 Surface #F1F2F0 Support #7E92A7 Anchor #2E3236

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

Vintage Leather Lead · 5 colors

Lead #666A8A Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582239

Dim Gray plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Modern Café Dominant · 5 colors

Dominant #666A8A Anchor #3B2923 Surface #F3E1D2 Accent #769F7B Secondary #3C3734

Dim Gray 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #666A8A Secondary #9395A1 Support #9D9088 Ink #18140F

Dim Gray 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 Dim Gray carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #666A8A 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 40/100

Neutral

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

Softness 51/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 45/100

Moderate

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 52/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 50/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 19/100

Very 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 40/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 92/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #666A8A

For UI

For branding

For interior

For fashion

People also use #666A8A with

Pewter Very Peri Shadow Gainsboro Charcoal

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 5.3:1. Use

Subtle surface Use #E1E2E7 for cards and hover fills. Tint 80

Avoid beside #6E668A — 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 #666A8A 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: #666A8A;
  --color-base-rgb: 102 106 138;
  --color-base-oklch: oklch(53.3% 0.050 279.0);
  --color-50: #F6F6F9;
  --color-100: #E7E8EE;
  --color-200: #D0D2DC;
  --color-300: #AEB0C1;
  --color-400: #8D8FA5;
  --color-500: #6D7088;
  --color-600: #585A6A;
  --color-700: #41434D;
  --color-800: #2D2E34;
  --color-900: #1D1D21;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dim-gray: {
    50: '#F6F6F9',
    100: '#E7E8EE',
    200: '#D0D2DC',
    300: '#AEB0C1',
    400: '#8D8FA5',
    500: '#6D7088',
    600: '#585A6A',
    700: '#41434D',
    800: '#2D2E34',
    900: '#1D1D21',
  },
}

$base: #666A8A;
$base-ink: #FFFFFF;
$base-50: #F6F6F9;
$base-100: #E7E8EE;
$base-200: #D0D2DC;
$base-300: #AEB0C1;
$base-400: #8D8FA5;
$base-500: #6D7088;
$base-600: #585A6A;
$base-700: #41434D;
$base-800: #2D2E34;
$base-900: #1D1D21;
$base-hover: #51556E;
$base-subtle: #D2D3DB;

{
    "color": {
        "base": {
            "value": "#666A8A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F6F9",
                "type": "color"
            },
            "100": {
                "value": "#E7E8EE",
                "type": "color"
            },
            "200": {
                "value": "#D0D2DC",
                "type": "color"
            },
            "300": {
                "value": "#AEB0C1",
                "type": "color"
            },
            "400": {
                "value": "#8D8FA5",
                "type": "color"
            },
            "500": {
                "value": "#6D7088",
                "type": "color"
            },
            "600": {
                "value": "#585A6A",
                "type": "color"
            },
            "700": {
                "value": "#41434D",
                "type": "color"
            },
            "800": {
                "value": "#2D2E34",
                "type": "color"
            },
            "900": {
                "value": "#1D1D21",
                "type": "color"
            }
        }
    }
}

Palettes built on #666A8A

Color Lab

Pairs with #666A8A

UI roles & guardrails

In real applications

Scales

Every model

Export