What color is #666BAD?

#666BAD is a medium, muted blue-violet. In RGB it is rgb(102, 107, 173), and in HSL hsl(236, 30%, 54%).

Is #666BAD accessible as text?

On white, #666BAD has a contrast ratio of 4.92:1 (passes WCAG AA for body text); on black it is 4.27:1 (fails). For text placed on #666BAD, use white for the best readability.

What is the closest Tailwind color to #666BAD?

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

What colors go well with #666BAD?

#666BAD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #ADA867. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #666BAD below.

Is #666BAD good for buttons?

#666BAD works well for buttons and highlights, but use white text on #666BAD — black text only reaches 4.27:1, below the 4.5:1 needed for normal-size labels.

Is #666BAD the same as CSS steelblue?

No — #666BAD is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

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

Palettes built on #666BAD

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

Coastal Morning Lead · 5 colors

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

Very Peri opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Vintage Leather Lead · 5 colors

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

Very Peri 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 #666BAD Anchor #3B2923 Surface #F3E1D2 Accent #769F7B Secondary #3C3734

Very Peri 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.

Berry & Cream Lead · 5 colors

Lead #666BAD Surface #F6E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

Very Peri sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #666BAD Secondary #979AB3 Support #9D9088 Ink #18140F

Very Peri 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 Very Peri carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #666BAD 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 30/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 46/100

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 62/100

High

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

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 28/100

Low

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

UI accent fit 93/100

Very high

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

Surface fit 26/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 84/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #666BAD

For UI

For branding

For interior

For fashion

People also use #666BAD with

Cadet Grey Amethyst Sage Green Gainsboro Prussian Blue

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 4.9:1. Use

Subtle surface Use #E2E3ED for cards and hover fills. Tint 80

Avoid beside #7967AD — 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 #666BAD 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: #666BAD;
  --color-base-rgb: 102 107 173;
  --color-base-oklch: oklch(55.3% 0.102 279.2);
  --color-50: #F5F5FA;
  --color-100: #E4E5F1;
  --color-200: #CACCE2;
  --color-300: #A4A7CB;
  --color-400: #8083B2;
  --color-500: #606495;
  --color-600: #4E5174;
  --color-700: #3B3D54;
  --color-800: #292A38;
  --color-900: #1B1B23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  very-peri: {
    50: '#F5F5FA',
    100: '#E4E5F1',
    200: '#CACCE2',
    300: '#A4A7CB',
    400: '#8083B2',
    500: '#606495',
    600: '#4E5174',
    700: '#3B3D54',
    800: '#292A38',
    900: '#1B1B23',
  },
}

$base: #666BAD;
$base-ink: #FFFFFF;
$base-50: #F5F5FA;
$base-100: #E4E5F1;
$base-200: #CACCE2;
$base-300: #A4A7CB;
$base-400: #8083B2;
$base-500: #606495;
$base-600: #4E5174;
$base-700: #3B3D54;
$base-800: #292A38;
$base-900: #1B1B23;
$base-hover: #4D528F;
$base-subtle: #D4D5E4;

{
    "color": {
        "base": {
            "value": "#666BAD",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F5FA",
                "type": "color"
            },
            "100": {
                "value": "#E4E5F1",
                "type": "color"
            },
            "200": {
                "value": "#CACCE2",
                "type": "color"
            },
            "300": {
                "value": "#A4A7CB",
                "type": "color"
            },
            "400": {
                "value": "#8083B2",
                "type": "color"
            },
            "500": {
                "value": "#606495",
                "type": "color"
            },
            "600": {
                "value": "#4E5174",
                "type": "color"
            },
            "700": {
                "value": "#3B3D54",
                "type": "color"
            },
            "800": {
                "value": "#292A38",
                "type": "color"
            },
            "900": {
                "value": "#1B1B23",
                "type": "color"
            }
        }
    }
}

Palettes built on #666BAD

Color Lab

Pairs with #666BAD

UI roles & guardrails

In real applications

Scales

Every model

Export