What color is #6370BC?

#6370BC is a medium blue-violet. In RGB it is rgb(99, 112, 188), and in HSL hsl(231, 40%, 56%).

Is #6370BC accessible as text?

On white, #6370BC has a contrast ratio of 4.59:1 (passes WCAG AA for body text); on black it is 4.57:1 (passes). For text placed on #6370BC, use white for the best readability.

What is the closest Tailwind color to #6370BC?

The nearest Tailwind CSS token is sky-600 (#0084D1).

What colors go well with #6370BC?

#6370BC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BCAE62. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #6370BC below.

Is #6370BC good for buttons?

#6370BC works for buttons; white text has the higher contrast, so prefer it for labels.

Is #6370BC the same as CSS steelblue?

No — #6370BC is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#6370BC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #6370BC

Not just a swatch — here's how #6370BC works with other colors. Named schemes with #6370BC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #6370BC Accent #A5C4C2 Surface #EAD5C0 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.

Tech Product Signal · 5 colors

Signal #6370BC Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #8796DD

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

Vintage Leather Lead · 5 colors

Lead #6370BC Secondary #7F4535 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.

Berry & Cream Lead · 5 colors

Lead #6370BC 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 #6370BC Secondary #99A0BC 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 #6370BC 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 25/100

Cool

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

Softness 46/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 43/100

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 54/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 95/100

Very high

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

Surface fit 23/100

Low

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

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #6370BC

For UI

For branding

For interior

For fashion

People also use #6370BC with

Iceberg Amethyst Dark Khaki 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 4.6:1. Use

Subtle surface Use #E2E4EF for cards and hover fills. Tint 80

Avoid beside #7262BC — 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 #6370BC 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: #6370BC;
  --color-base-rgb: 99 112 188;
  --color-base-oklch: oklch(56.9% 0.118 274.7);
  --color-50: #F4F5FB;
  --color-100: #E2E5F3;
  --color-200: #C6CBE6;
  --color-300: #9EA6D1;
  --color-400: #7882BA;
  --color-500: #57629E;
  --color-600: #484F7A;
  --color-700: #373C58;
  --color-800: #272A3A;
  --color-900: #191B24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  very-peri: {
    50: '#F4F5FB',
    100: '#E2E5F3',
    200: '#C6CBE6',
    300: '#9EA6D1',
    400: '#7882BA',
    500: '#57629E',
    600: '#484F7A',
    700: '#373C58',
    800: '#272A3A',
    900: '#191B24',
  },
}

$base: #6370BC;
$base-ink: #FFFFFF;
$base-50: #F4F5FB;
$base-100: #E2E5F3;
$base-200: #C6CBE6;
$base-300: #9EA6D1;
$base-400: #7882BA;
$base-500: #57629E;
$base-600: #484F7A;
$base-700: #373C58;
$base-800: #272A3A;
$base-900: #191B24;
$base-hover: #4552A0;
$base-subtle: #D3D6E8;

{
    "color": {
        "base": {
            "value": "#6370BC",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F5FB",
                "type": "color"
            },
            "100": {
                "value": "#E2E5F3",
                "type": "color"
            },
            "200": {
                "value": "#C6CBE6",
                "type": "color"
            },
            "300": {
                "value": "#9EA6D1",
                "type": "color"
            },
            "400": {
                "value": "#7882BA",
                "type": "color"
            },
            "500": {
                "value": "#57629E",
                "type": "color"
            },
            "600": {
                "value": "#484F7A",
                "type": "color"
            },
            "700": {
                "value": "#373C58",
                "type": "color"
            },
            "800": {
                "value": "#272A3A",
                "type": "color"
            },
            "900": {
                "value": "#191B24",
                "type": "color"
            }
        }
    }
}

Palettes built on #6370BC

Color Lab

Pairs with #6370BC

UI roles & guardrails

In real applications

Scales

Every model

Export