What color is #646FAB?

#646FAB is a medium, muted blue-violet. In RGB it is rgb(100, 111, 171), and in HSL hsl(231, 30%, 53%).

Is #646FAB accessible as text?

On white, #646FAB has a contrast ratio of 4.77:1 (passes WCAG AA for body text); on black it is 4.40:1 (fails). For text placed on #646FAB, use white for the best readability.

What is the closest Tailwind color to #646FAB?

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

What colors go well with #646FAB?

#646FAB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #ABA063. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #646FAB below.

Is #646FAB good for buttons?

#646FAB works well for buttons and highlights, but use white text on #646FAB — black text only reaches 4.40:1, below the 4.5:1 needed for normal-size labels.

Is #646FAB the same as CSS steelblue?

No — #646FAB is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#646FAB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #646FAB

Not just a swatch — here's how #646FAB works with other colors. Named schemes with #646FAB in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #646FAB Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #21344A

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 #646FAB Secondary #7F4534 Surface #EED7C2 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 #646FAB Anchor #3B2924 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 #646FAB Surface #F6E5D8 Anchor #5B2143 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 #646FAB Secondary #989DB3 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 #646FAB 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 48/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 44/100

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 63/100

High

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

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 25/100

Low

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

UI accent fit 90/100

Very high

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

Surface fit 29/100

Low

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

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #646FAB

For UI

For branding

For interior

For fashion

People also use #646FAB with

Cadet Grey Very Peri 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 4.8:1. Use

Subtle surface Use #E2E3EC for cards and hover fills. Tint 80

Avoid beside #7063AB — 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 #646FAB 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: #646FAB;
  --color-base-rgb: 100 111 171;
  --color-base-oklch: oklch(55.8% 0.094 275.0);
  --color-50: #F5F6FA;
  --color-100: #E4E6F1;
  --color-200: #CACEE2;
  --color-300: #A4AACB;
  --color-400: #8088B2;
  --color-500: #606895;
  --color-600: #4E5474;
  --color-700: #3B3F54;
  --color-800: #292B38;
  --color-900: #1B1C23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  very-peri: {
    50: '#F5F6FA',
    100: '#E4E6F1',
    200: '#CACEE2',
    300: '#A4AACB',
    400: '#8088B2',
    500: '#606895',
    600: '#4E5474',
    700: '#3B3F54',
    800: '#292B38',
    900: '#1B1C23',
  },
}

$base: #646FAB;
$base-ink: #FFFFFF;
$base-50: #F5F6FA;
$base-100: #E4E6F1;
$base-200: #CACEE2;
$base-300: #A4AACB;
$base-400: #8088B2;
$base-500: #606895;
$base-600: #4E5474;
$base-700: #3B3F54;
$base-800: #292B38;
$base-900: #1B1C23;
$base-hover: #4C558D;
$base-subtle: #D3D5E3;

{
    "color": {
        "base": {
            "value": "#646FAB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F6FA",
                "type": "color"
            },
            "100": {
                "value": "#E4E6F1",
                "type": "color"
            },
            "200": {
                "value": "#CACEE2",
                "type": "color"
            },
            "300": {
                "value": "#A4AACB",
                "type": "color"
            },
            "400": {
                "value": "#8088B2",
                "type": "color"
            },
            "500": {
                "value": "#606895",
                "type": "color"
            },
            "600": {
                "value": "#4E5474",
                "type": "color"
            },
            "700": {
                "value": "#3B3F54",
                "type": "color"
            },
            "800": {
                "value": "#292B38",
                "type": "color"
            },
            "900": {
                "value": "#1B1C23",
                "type": "color"
            }
        }
    }
}

Palettes built on #646FAB

Color Lab

Pairs with #646FAB

UI roles & guardrails

In real applications

Scales

Every model

Export