What color is #64779B?

#64779B is a medium, muted blue. In RGB it is rgb(100, 119, 155), and in HSL hsl(219, 22%, 50%).

Is #64779B accessible as text?

On white, #64779B has a contrast ratio of 4.51:1 (passes WCAG AA for body text); on black it is 4.65:1 (passes). For text placed on #64779B, use black for the best readability.

What is the closest Tailwind color to #64779B?

The nearest Tailwind CSS token is mist-500 (#67787C).

What colors go well with #64779B?

#64779B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #9C8863. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #64779B below.

Is #64779B good for buttons?

#64779B works for buttons; black text has the higher contrast, so prefer it for labels.

Is #64779B the same as CSS slategray?

No — #64779B is not the CSS named color slategray, but slategray (#708090) 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.

#64779B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #64779B

Not just a swatch — here's how #64779B works with other colors. Named schemes with #64779B in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #64779B Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Slate 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 #64779B Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A7 Anchor #2E3236

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

Tech Product Signal · 5 colors

Signal #64779B Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #899BBD

Slate Gray is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Slate Gray.

Vintage Leather Lead · 5 colors

Lead #64779B Secondary #7F4536 Surface #E1DDC1 Accent #375246 Anchor #57223A

Slate 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #64779B Secondary #9AA1AF Support #9D8F88 Ink #18140F

Slate 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 Slate Gray carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #64779B 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 35/100

Cool

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

Softness 53/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 42/100

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 48/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 23/100

Low

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

UI accent fit 75/100

High

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

Surface fit 41/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #64779B

For UI

For branding

For interior

For fashion

People also use #64779B with

Cadet Grey Very Peri Beaver 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 4.5:1. Use

Subtle surface Use #E1E4EA for cards and hover fills. Tint 80

Avoid beside #63649C — 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 #64779B at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #64779B;
  --color-base-rgb: 100 119 155;
  --color-base-oklch: oklch(56.8% 0.060 262.9);
  --color-50: #F6F7F9;
  --color-100: #E6E9EF;
  --color-200: #CDD4DF;
  --color-300: #A9B3C6;
  --color-400: #8794AB;
  --color-500: #67758E;
  --color-600: #535D6F;
  --color-700: #3F4550;
  --color-800: #2B2F36;
  --color-900: #1C1E22;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  slate-gray: {
    50: '#F6F7F9',
    100: '#E6E9EF',
    200: '#CDD4DF',
    300: '#A9B3C6',
    400: '#8794AB',
    500: '#67758E',
    600: '#535D6F',
    700: '#3F4550',
    800: '#2B2F36',
    900: '#1C1E22',
  },
}

$base: #64779B;
$base-ink: #141310;
$base-50: #F6F7F9;
$base-100: #E6E9EF;
$base-200: #CDD4DF;
$base-300: #A9B3C6;
$base-400: #8794AB;
$base-500: #67758E;
$base-600: #535D6F;
$base-700: #3F4550;
$base-800: #2B2F36;
$base-900: #1C1E22;
$base-hover: #505F7C;
$base-subtle: #D2D7DF;

{
    "color": {
        "base": {
            "value": "#64779B",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F7F9",
                "type": "color"
            },
            "100": {
                "value": "#E6E9EF",
                "type": "color"
            },
            "200": {
                "value": "#CDD4DF",
                "type": "color"
            },
            "300": {
                "value": "#A9B3C6",
                "type": "color"
            },
            "400": {
                "value": "#8794AB",
                "type": "color"
            },
            "500": {
                "value": "#67758E",
                "type": "color"
            },
            "600": {
                "value": "#535D6F",
                "type": "color"
            },
            "700": {
                "value": "#3F4550",
                "type": "color"
            },
            "800": {
                "value": "#2B2F36",
                "type": "color"
            },
            "900": {
                "value": "#1C1E22",
                "type": "color"
            }
        }
    }
}

Palettes built on #64779B

Color Lab

Pairs with #64779B

UI roles & guardrails

In real applications

Scales

Every model

Export