What color is #286378?

#286378 is a dark cyan-blue. In RGB it is rgb(40, 99, 120), and in HSL hsl(196, 50%, 31%).

Is #286378 accessible as text?

On white, #286378 has a contrast ratio of 6.67:1 (passes WCAG AA for body text); on black it is 3.15:1 (fails). For text placed on #286378, use white for the best readability.

What is the closest Tailwind color to #286378?

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

What colors go well with #286378?

#286378 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #773D28. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #286378 below.

Is #286378 good for buttons?

#286378 works well for buttons and highlights, but use white text on #286378 — black text only reaches 3.15:1, below the 4.5:1 needed for normal-size labels.

Is #286378 the same as CSS darkslategray?

No — #286378 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#286378 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #286378

Not just a swatch — here's how #286378 works with other colors. Named schemes with #286378 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #286378 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1E344A

Teal Blue 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 #286378 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A5 Anchor #2E3236

Teal Blue 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 #286378 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #538699

Teal 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 Teal Blue.

Vintage Leather Lead · 5 colors

Lead #286378 Secondary #6F5116 Surface #E2DCC0 Accent #385244 Anchor #56233E

Teal 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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #286378 Secondary #74878E Support #969386 Ink #16140F

Teal 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 Teal Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #286378 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 30/100

Cool

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

Softness 44/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 52/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 47/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 57/100

Moderate

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

Brand distinctiveness 19/100

Very low

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

UI accent fit 76/100

High

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

Surface fit 33/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #286378

For UI

For branding

For interior

For fashion

People also use #286378 with

Russian Green Yale Blue Walnut Brown Platinum Dark Slate Gray

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 6.7:1. Use

Subtle surface Use #CFE2E8 for cards and hover fills. Tint 80

Avoid beside #284777 — 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 #286378 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: #286378;
  --color-base-rgb: 40 99 120;
  --color-base-oklch: oklch(47.0% 0.069 224.7);
  --color-50: #F3F9FC;
  --color-100: #E0F0F5;
  --color-200: #C2E0EB;
  --color-300: #97C7D8;
  --color-400: #70ACC2;
  --color-500: #4E8FA6;
  --color-600: #426F80;
  --color-700: #33515C;
  --color-800: #24363C;
  --color-900: #182225;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  teal-blue: {
    50: '#F3F9FC',
    100: '#E0F0F5',
    200: '#C2E0EB',
    300: '#97C7D8',
    400: '#70ACC2',
    500: '#4E8FA6',
    600: '#426F80',
    700: '#33515C',
    800: '#24363C',
    900: '#182225',
  },
}

$base: #286378;
$base-ink: #FFFFFF;
$base-50: #F3F9FC;
$base-100: #E0F0F5;
$base-200: #C2E0EB;
$base-300: #97C7D8;
$base-400: #70ACC2;
$base-500: #4E8FA6;
$base-600: #426F80;
$base-700: #33515C;
$base-800: #24363C;
$base-900: #182225;
$base-hover: #204E5F;
$base-subtle: #B6D4DE;

{
    "color": {
        "base": {
            "value": "#286378",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F9FC",
                "type": "color"
            },
            "100": {
                "value": "#E0F0F5",
                "type": "color"
            },
            "200": {
                "value": "#C2E0EB",
                "type": "color"
            },
            "300": {
                "value": "#97C7D8",
                "type": "color"
            },
            "400": {
                "value": "#70ACC2",
                "type": "color"
            },
            "500": {
                "value": "#4E8FA6",
                "type": "color"
            },
            "600": {
                "value": "#426F80",
                "type": "color"
            },
            "700": {
                "value": "#33515C",
                "type": "color"
            },
            "800": {
                "value": "#24363C",
                "type": "color"
            },
            "900": {
                "value": "#182225",
                "type": "color"
            }
        }
    }
}

Palettes built on #286378

Color Lab

Pairs with #286378

UI roles & guardrails

In real applications

Scales

Every model

Export