What color is #015FC4?

#015FC4 is a dark, vivid blue. In RGB it is rgb(1, 95, 196), and in HSL hsl(211, 99%, 39%).

Is #015FC4 accessible as text?

On white, #015FC4 has a contrast ratio of 6.11:1 (passes WCAG AA for body text); on black it is 3.44:1 (fails). For text placed on #015FC4, use white for the best readability.

What is the closest Tailwind color to #015FC4?

The nearest Tailwind CSS token is sky-700 (#0069A8).

What colors go well with #015FC4?

#015FC4 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C66701. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #015FC4 below.

Is #015FC4 good for buttons?

#015FC4 works well for buttons and highlights, but use white text on #015FC4 — black text only reaches 3.44:1, below the 4.5:1 needed for normal-size labels.

Is #015FC4 the same as CSS royalblue?

No — #015FC4 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#015FC4 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #015FC4

Not just a swatch — here's how #015FC4 works with other colors. Named schemes with #015FC4 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #015FC4 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Denim Blue 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 #015FC4 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4086E3

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

Vintage Leather Lead · 5 colors

Lead #015FC4 Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

Denim Blue 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 #015FC4 Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CA Secondary #322B2F

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #015FC4 Secondary #758EB2 Support #9D8F89 Ink #16140F

Denim Blue 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 Denim Blue carrying the quiet middle.

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Color Lab

How #015FC4 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 5/100

Cool

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 53/100

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 31/100

Low

A faint retro warmth without tipping into sepia.

Luxury 53/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 47/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 94/100

Very high

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

Surface fit 8/100

Very low

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

Print safety 65/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #015FC4

For UI

For branding

For interior

For fashion

People also use #015FC4 with

Turquoise Medium Blue Ginger 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 6.1:1. Use

Subtle surface Use #CADFF6 for cards and hover fills. Tint 80

Avoid beside #011FC6 — 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 #015FC4 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: #015FC4;
  --color-base-rgb: 1 95 196;
  --color-base-oklch: oklch(50.1% 0.175 256.7);
  --color-50: #F0F7FE;
  --color-100: #D8EAFD;
  --color-200: #B1D5FC;
  --color-300: #78B5F7;
  --color-400: #4796EB;
  --color-500: #2377D2;
  --color-600: #235F9F;
  --color-700: #1F466F;
  --color-800: #193048;
  --color-900: #111E2C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  denim-blue: {
    50: '#F0F7FE',
    100: '#D8EAFD',
    200: '#B1D5FC',
    300: '#78B5F7',
    400: '#4796EB',
    500: '#2377D2',
    600: '#235F9F',
    700: '#1F466F',
    800: '#193048',
    900: '#111E2C',
  },
}

$base: #015FC4;
$base-ink: #FFFFFF;
$base-50: #F0F7FE;
$base-100: #D8EAFD;
$base-200: #B1D5FC;
$base-300: #78B5F7;
$base-400: #4796EB;
$base-500: #2377D2;
$base-600: #235F9F;
$base-700: #1F466F;
$base-800: #193048;
$base-900: #111E2C;
$base-hover: #014D9E;
$base-subtle: #ADCFF3;

{
    "color": {
        "base": {
            "value": "#015FC4",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F7FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EAFD",
                "type": "color"
            },
            "200": {
                "value": "#B1D5FC",
                "type": "color"
            },
            "300": {
                "value": "#78B5F7",
                "type": "color"
            },
            "400": {
                "value": "#4796EB",
                "type": "color"
            },
            "500": {
                "value": "#2377D2",
                "type": "color"
            },
            "600": {
                "value": "#235F9F",
                "type": "color"
            },
            "700": {
                "value": "#1F466F",
                "type": "color"
            },
            "800": {
                "value": "#193048",
                "type": "color"
            },
            "900": {
                "value": "#111E2C",
                "type": "color"
            }
        }
    }
}

Palettes built on #015FC4

Color Lab

Pairs with #015FC4

UI roles & guardrails

In real applications

Scales

Every model

Export