What color is #387CD5?

#387CD5 is a medium blue. In RGB it is rgb(56, 124, 213), and in HSL hsl(214, 65%, 53%).

Is #387CD5 accessible as text?

On white, #387CD5 has a contrast ratio of 4.19:1 (fails WCAG AA for body text); on black it is 5.01:1 (passes). For text placed on #387CD5, use black for the best readability.

What is the closest Tailwind color to #387CD5?

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

What colors go well with #387CD5?

#387CD5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #D59239. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #387CD5 below.

Is #387CD5 good for buttons?

#387CD5 works well for buttons and highlights, but use black text on #387CD5 — white text only reaches 4.19:1, below the 4.5:1 needed for normal-size labels.

Is #387CD5 the same as CSS royalblue?

No — #387CD5 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#387CD5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #387CD5

Not just a swatch — here's how #387CD5 works with other colors. Named schemes with #387CD5 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #387CD5 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

True 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 #387CD5 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #65A2F5

True 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 True Blue.

Vintage Leather Lead · 5 colors

Lead #387CD5 Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

True 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 #387CD5 Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CA Secondary #322B2F

True 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 #387CD5 Secondary #92A9C9 Support #9D8F89 Ink #16140F

True 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 True Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #387CD5 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 9/100

Cool

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

Softness 43/100

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 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 41/100

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 16/100

Very low

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

Print safety 69/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #387CD5

For UI

For branding

For interior

For fashion

People also use #387CD5 with

Turquoise Han Purple Butterscotch 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 #141310 text at 4.4:1. Use

Subtle surface Use #DCE6F2 for cards and hover fills. Tint 80

Avoid beside #3949D5 — 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 #387CD5 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: #387CD5;
  --color-base-rgb: 56 124 213;
  --color-base-oklch: oklch(58.8% 0.153 256.4);
  --color-50: #F2F7FD;
  --color-100: #DDE9F9;
  --color-200: #BCD3F1;
  --color-300: #8EB2E2;
  --color-400: #6392CF;
  --color-500: #4173B4;
  --color-600: #385C89;
  --color-700: #2D4462;
  --color-800: #212E40;
  --color-900: #161D27;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F2F7FD',
    100: '#DDE9F9',
    200: '#BCD3F1',
    300: '#8EB2E2',
    400: '#6392CF',
    500: '#4173B4',
    600: '#385C89',
    700: '#2D4462',
    800: '#212E40',
    900: '#161D27',
  },
}

$base: #387CD5;
$base-ink: #141310;
$base-50: #F2F7FD;
$base-100: #DDE9F9;
$base-200: #BCD3F1;
$base-300: #8EB2E2;
$base-400: #6392CF;
$base-500: #4173B4;
$base-600: #385C89;
$base-700: #2D4462;
$base-800: #212E40;
$base-900: #161D27;
$base-hover: #2663B2;
$base-subtle: #C9D9ED;

{
    "color": {
        "base": {
            "value": "#387CD5",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F7FD",
                "type": "color"
            },
            "100": {
                "value": "#DDE9F9",
                "type": "color"
            },
            "200": {
                "value": "#BCD3F1",
                "type": "color"
            },
            "300": {
                "value": "#8EB2E2",
                "type": "color"
            },
            "400": {
                "value": "#6392CF",
                "type": "color"
            },
            "500": {
                "value": "#4173B4",
                "type": "color"
            },
            "600": {
                "value": "#385C89",
                "type": "color"
            },
            "700": {
                "value": "#2D4462",
                "type": "color"
            },
            "800": {
                "value": "#212E40",
                "type": "color"
            },
            "900": {
                "value": "#161D27",
                "type": "color"
            }
        }
    }
}

Palettes built on #387CD5

Color Lab

Pairs with #387CD5

UI roles & guardrails

In real applications

Scales

Every model

Export