What color is #6478AA?

#6478AA is a medium, muted blue. In RGB it is rgb(100, 120, 170), and in HSL hsl(223, 29%, 53%).

Is #6478AA accessible as text?

On white, #6478AA has a contrast ratio of 4.37:1 (fails WCAG AA for body text); on black it is 4.81:1 (passes). For text placed on #6478AA, use black for the best readability.

What is the closest Tailwind color to #6478AA?

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

What colors go well with #6478AA?

#6478AA pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AA9664. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #6478AA below.

Is #6478AA good for buttons?

#6478AA works well for buttons and highlights, but use black text on #6478AA — white text only reaches 4.37:1, below the 4.5:1 needed for normal-size labels.

Is #6478AA the same as CSS steelblue?

No — #6478AA is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#6478AA Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #6478AA

Not just a swatch — here's how #6478AA works with other colors. Named schemes with #6478AA in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #6478AA Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Glaucous 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 #6478AA Secondary #AEB4B8 Surface #F1F2F0 Support #7D92A7 Anchor #2E3236

Glaucous 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 #6478AA Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #899DCC

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

Vintage Leather Lead · 5 colors

Lead #6478AA Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #58223A

Glaucous 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 #6478AA Secondary #9CA4B6 Support #9D8F88 Ink #18140F

Glaucous 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 Glaucous carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #6478AA 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 31/100

Cool

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

Softness 51/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 41/100

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 59/100

Moderate

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

Luxury 48/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 22/100

Low

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

UI accent fit 83/100

Very high

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

Surface fit 35/100

Low

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #6478AA

For UI

For branding

For interior

For fashion

People also use #6478AA with

Cadet Grey Very Peri Camel Gainsboro Charcoal

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 4.4:1. Use

Subtle surface Use #E2E5EC for cards and hover fills. Tint 80

Avoid beside #6864AA — 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 #6478AA 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: #6478AA;
  --color-base-rgb: 100 120 170;
  --color-base-oklch: oklch(57.7% 0.081 267.1);
  --color-50: #F5F6FA;
  --color-100: #E4E8F1;
  --color-200: #CAD1E2;
  --color-300: #A5AFCA;
  --color-400: #818FB1;
  --color-500: #616F94;
  --color-600: #4F5973;
  --color-700: #3C4253;
  --color-800: #292D37;
  --color-900: #1B1D23;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  glaucous: {
    50: '#F5F6FA',
    100: '#E4E8F1',
    200: '#CAD1E2',
    300: '#A5AFCA',
    400: '#818FB1',
    500: '#616F94',
    600: '#4F5973',
    700: '#3C4253',
    800: '#292D37',
    900: '#1B1D23',
  },
}

$base: #6478AA;
$base-ink: #141310;
$base-50: #F5F6FA;
$base-100: #E4E8F1;
$base-200: #CAD1E2;
$base-300: #A5AFCA;
$base-400: #818FB1;
$base-500: #616F94;
$base-600: #4F5973;
$base-700: #3C4253;
$base-800: #292D37;
$base-900: #1B1D23;
$base-hover: #4D5F8B;
$base-subtle: #D3D8E3;

{
    "color": {
        "base": {
            "value": "#6478AA",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F6FA",
                "type": "color"
            },
            "100": {
                "value": "#E4E8F1",
                "type": "color"
            },
            "200": {
                "value": "#CAD1E2",
                "type": "color"
            },
            "300": {
                "value": "#A5AFCA",
                "type": "color"
            },
            "400": {
                "value": "#818FB1",
                "type": "color"
            },
            "500": {
                "value": "#616F94",
                "type": "color"
            },
            "600": {
                "value": "#4F5973",
                "type": "color"
            },
            "700": {
                "value": "#3C4253",
                "type": "color"
            },
            "800": {
                "value": "#292D37",
                "type": "color"
            },
            "900": {
                "value": "#1B1D23",
                "type": "color"
            }
        }
    }
}

Palettes built on #6478AA

Color Lab

Pairs with #6478AA

UI roles & guardrails

In real applications

Scales

Every model

Export