What color is #045787?

#045787 is a dark, vivid cyan-blue. In RGB it is rgb(4, 87, 135), and in HSL hsl(202, 94%, 27%).

Is #045787 accessible as text?

On white, #045787 has a contrast ratio of 7.73:1 (passes WCAG AA for body text); on black it is 2.72:1 (fails). For text placed on #045787, use white for the best readability.

What is the closest Tailwind color to #045787?

The nearest Tailwind CSS token is sky-800 (#00598A).

What colors go well with #045787?

#045787 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #863404. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #045787 below.

Is #045787 good for buttons?

#045787 works well for buttons and highlights, but use white text on #045787 — black text only reaches 2.72:1, below the 4.5:1 needed for normal-size labels.

Is #045787 the same as CSS darkslateblue?

No — #045787 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#045787 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #045787

Not just a swatch — here's how #045787 works with other colors. Named schemes with #045787 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #045787 Accent #A5C4C0 Surface #DEDBBF Secondary #9AA0A0 Anchor #1F344A

Classic 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 #045787 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3E7AA7

Classic 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 Classic Blue.

Vintage Leather Lead · 5 colors

Lead #045787 Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

Classic 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 #045787 Surface #EEE9D6 Anchor #5A2246 Accent #E4C2CB Secondary #322B30

Classic 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 #045787 Secondary #687D8E Support #969386 Ink #16140F

Classic 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 Classic Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #045787 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 20/100

Cool

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

Softness 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 56/100

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 46/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 28/100

Low

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

UI accent fit 82/100

Very high

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

Surface fit 25/100

Low

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

Print safety 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #045787

For UI

For branding

For interior

For fashion

People also use #045787 with

Jungle Green Phthalo Blue Walnut Brown Platinum Charcoal

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

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 7.7:1. Use

Subtle surface Use #C1E0F3 for cards and hover fills. Tint 80

Avoid beside #042B86 — 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 #045787 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: #045787;
  --color-base-rgb: 4 87 135;
  --color-base-oklch: oklch(43.9% 0.105 243.2);
  --color-50: #F0F9FE;
  --color-100: #D8F0FD;
  --color-200: #B1E0FC;
  --color-300: #7BC8F4;
  --color-400: #4BAEE7;
  --color-500: #2890CD;
  --color-600: #26719B;
  --color-700: #21526D;
  --color-800: #1A3647;
  --color-900: #12222B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F0F9FE',
    100: '#D8F0FD',
    200: '#B1E0FC',
    300: '#7BC8F4',
    400: '#4BAEE7',
    500: '#2890CD',
    600: '#26719B',
    700: '#21526D',
    800: '#1A3647',
    900: '#12222B',
  },
}

$base: #045787;
$base-ink: #FFFFFF;
$base-50: #F0F9FE;
$base-100: #D8F0FD;
$base-200: #B1E0FC;
$base-300: #7BC8F4;
$base-400: #4BAEE7;
$base-500: #2890CD;
$base-600: #26719B;
$base-700: #21526D;
$base-800: #1A3647;
$base-900: #12222B;
$base-hover: #03456B;
$base-subtle: #9FD2EF;

{
    "color": {
        "base": {
            "value": "#045787",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F9FE",
                "type": "color"
            },
            "100": {
                "value": "#D8F0FD",
                "type": "color"
            },
            "200": {
                "value": "#B1E0FC",
                "type": "color"
            },
            "300": {
                "value": "#7BC8F4",
                "type": "color"
            },
            "400": {
                "value": "#4BAEE7",
                "type": "color"
            },
            "500": {
                "value": "#2890CD",
                "type": "color"
            },
            "600": {
                "value": "#26719B",
                "type": "color"
            },
            "700": {
                "value": "#21526D",
                "type": "color"
            },
            "800": {
                "value": "#1A3647",
                "type": "color"
            },
            "900": {
                "value": "#12222B",
                "type": "color"
            }
        }
    }
}