What color is #285A8F?

#285A8F is a dark blue. In RGB it is rgb(40, 90, 143), and in HSL hsl(211, 56%, 36%).

Is #285A8F accessible as text?

On white, #285A8F has a contrast ratio of 7.12:1 (passes WCAG AA for body text); on black it is 2.95:1 (fails). For text placed on #285A8F, use white for the best readability.

What is the closest Tailwind color to #285A8F?

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

What colors go well with #285A8F?

#285A8F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8F5E28. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #285A8F below.

Is #285A8F good for buttons?

#285A8F works well for buttons and highlights, but use white text on #285A8F — black text only reaches 2.95:1, below the 4.5:1 needed for normal-size labels.

Is #285A8F the same as CSS darkslateblue?

No — #285A8F is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#285A8F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #285A8F

Not just a swatch — here's how #285A8F works with other colors. Named schemes with #285A8F in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #285A8F Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Lapis Lazuli 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 #285A8F Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #517DAF

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 #285A8F Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

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.

Berry & Cream Lead · 5 colors

Lead #285A8F Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CB Secondary #322B2F

Lapis Lazuli 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 #285A8F Secondary #718296 Support #959386 Ink #16140F

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 #285A8F 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 22/100

Cool

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

Softness 39/100

Low

Middle-weight — neither delicate nor heavy.

Depth 54/100

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 49/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 60/100

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 87/100

Very high

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

Surface fit 24/100

Low

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

Print safety 78/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #285A8F

For UI

For branding

For interior

For fashion

People also use #285A8F with

Light Sea Green Egyptian 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 7.1:1. Use

Subtle surface Use #D1DEEC for cards and hover fills. Tint 80

Avoid beside #28388F — 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 #285A8F at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #285A8F;
  --color-base-rgb: 40 90 143;
  --color-base-oklch: oklch(46.0% 0.102 252.1);
  --color-50: #F3F7FC;
  --color-100: #DFEAF7;
  --color-200: #BFD5ED;
  --color-300: #93B6DC;
  --color-400: #6B97C7;
  --color-500: #4979AC;
  --color-600: #3E6084;
  --color-700: #31475E;
  --color-800: #23303E;
  --color-900: #171E26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  lapis-lazuli: {
    50: '#F3F7FC',
    100: '#DFEAF7',
    200: '#BFD5ED',
    300: '#93B6DC',
    400: '#6B97C7',
    500: '#4979AC',
    600: '#3E6084',
    700: '#31475E',
    800: '#23303E',
    900: '#171E26',
  },
}

$base: #285A8F;
$base-ink: #FFFFFF;
$base-50: #F3F7FC;
$base-100: #DFEAF7;
$base-200: #BFD5ED;
$base-300: #93B6DC;
$base-400: #6B97C7;
$base-500: #4979AC;
$base-600: #3E6084;
$base-700: #31475E;
$base-800: #23303E;
$base-900: #171E26;
$base-hover: #204873;
$base-subtle: #B9CDE3;

{
    "color": {
        "base": {
            "value": "#285A8F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F7FC",
                "type": "color"
            },
            "100": {
                "value": "#DFEAF7",
                "type": "color"
            },
            "200": {
                "value": "#BFD5ED",
                "type": "color"
            },
            "300": {
                "value": "#93B6DC",
                "type": "color"
            },
            "400": {
                "value": "#6B97C7",
                "type": "color"
            },
            "500": {
                "value": "#4979AC",
                "type": "color"
            },
            "600": {
                "value": "#3E6084",
                "type": "color"
            },
            "700": {
                "value": "#31475E",
                "type": "color"
            },
            "800": {
                "value": "#23303E",
                "type": "color"
            },
            "900": {
                "value": "#171E26",
                "type": "color"
            }
        }
    }
}