What color is #435779?

#435779 is a dark, muted blue. In RGB it is rgb(67, 87, 121), and in HSL hsl(218, 29%, 37%).

Is #435779 accessible as text?

On white, #435779 has a contrast ratio of 7.30:1 (passes WCAG AA for body text); on black it is 2.88:1 (fails). For text placed on #435779, use white for the best readability.

What is the closest Tailwind color to #435779?

The nearest Tailwind CSS token is cyan-800 (#005F78).

What colors go well with #435779?

#435779 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7A6643. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #435779 below.

Is #435779 good for buttons?

#435779 works well for buttons and highlights, but use white text on #435779 — black text only reaches 2.88:1, below the 4.5:1 needed for normal-size labels.

Is #435779 the same as CSS darkslategray?

No — #435779 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#435779 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #435779

Not just a swatch — here's how #435779 works with other colors. Named schemes with #435779 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #435779 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Lapis Lazuli 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 #435779 Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 Anchor #2E3236

Lapis Lazuli 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 #435779 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #667A9A

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

Vintage Leather Lead · 5 colors

Lead #435779 Secondary #7F4536 Surface #E1DDC1 Accent #375246 Anchor #57223A

Lapis Lazuli 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 #435779 Secondary #787F8C Support #9D8F88 Ink #18140F

Lapis Lazuli 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 Lapis Lazuli carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #435779 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 34/100

Cool

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

Softness 43/100

Moderate

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 46/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 58/100

Moderate

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

Brand distinctiveness 24/100

Low

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

UI accent fit 70/100

High

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

Surface fit 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #435779

For UI

For branding

For interior

For fashion

People also use #435779 with

Air Force Blue Dark Slate Blue Raw Umber Gainsboro 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 7.3:1. Use

Subtle surface Use #D8DDE6 for cards and hover fills. Tint 80

Avoid beside #43457A — 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 #435779 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: #435779;
  --color-base-rgb: 67 87 121;
  --color-base-oklch: oklch(45.5% 0.061 260.8);
  --color-50: #F5F7FA;
  --color-100: #E4E9F1;
  --color-200: #CAD3E2;
  --color-300: #A5B3CA;
  --color-400: #8193B1;
  --color-500: #617494;
  --color-600: #4F5C73;
  --color-700: #3C4453;
  --color-800: #292F37;
  --color-900: #1B1E23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  lapis-lazuli: {
    50: '#F5F7FA',
    100: '#E4E9F1',
    200: '#CAD3E2',
    300: '#A5B3CA',
    400: '#8193B1',
    500: '#617494',
    600: '#4F5C73',
    700: '#3C4453',
    800: '#292F37',
    900: '#1B1E23',
  },
}

$base: #435779;
$base-ink: #FFFFFF;
$base-50: #F5F7FA;
$base-100: #E4E9F1;
$base-200: #CAD3E2;
$base-300: #A5B3CA;
$base-400: #8193B1;
$base-500: #617494;
$base-600: #4F5C73;
$base-700: #3C4453;
$base-800: #292F37;
$base-900: #1B1E23;
$base-hover: #364661;
$base-subtle: #C4CCD9;

{
    "color": {
        "base": {
            "value": "#435779",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F7FA",
                "type": "color"
            },
            "100": {
                "value": "#E4E9F1",
                "type": "color"
            },
            "200": {
                "value": "#CAD3E2",
                "type": "color"
            },
            "300": {
                "value": "#A5B3CA",
                "type": "color"
            },
            "400": {
                "value": "#8193B1",
                "type": "color"
            },
            "500": {
                "value": "#617494",
                "type": "color"
            },
            "600": {
                "value": "#4F5C73",
                "type": "color"
            },
            "700": {
                "value": "#3C4453",
                "type": "color"
            },
            "800": {
                "value": "#292F37",
                "type": "color"
            },
            "900": {
                "value": "#1B1E23",
                "type": "color"
            }
        }
    }
}

Palettes built on #435779

Color Lab

Pairs with #435779

UI roles & guardrails

In real applications

Scales

Every model

Export