What color is #02584E?

#02584E is a dark, vivid teal. In RGB it is rgb(2, 88, 78), and in HSL hsl(173, 96%, 18%).

Is #02584E accessible as text?

On white, #02584E has a contrast ratio of 8.37:1 (passes WCAG AA for body text); on black it is 2.51:1 (fails). For text placed on #02584E, use white for the best readability.

What is the closest Tailwind color to #02584E?

The nearest Tailwind CSS token is teal-800 (#005F5A).

What colors go well with #02584E?

#02584E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5A020C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #02584E below.

Is #02584E good for buttons?

#02584E works well for buttons and highlights, but use white text on #02584E — black text only reaches 2.51:1, below the 4.5:1 needed for normal-size labels.

Is #02584E the same as CSS darkslategray?

No — #02584E is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#02584E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #02584E

Not just a swatch — here's how #02584E works with other colors. Named schemes with #02584E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #02584E Accent #A7C4BC Surface #E0DABE Secondary #9AA0A0 Anchor #1C3549

Castleton Green 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 #02584E Secondary #AEB4B7 Surface #F1F2F0 Support #7994A4 Anchor #2E3236

Castleton Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #02584E Secondary #734F18 Surface #E4DCC0 Accent #3A5142 Anchor #5B231E

Castleton Green plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Modern Café Dominant · 5 colors

Dominant #02584E Anchor #382B1E Surface #ECE4D0 Accent #829C70 Secondary #3A3833

Castleton Green anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #02584E Secondary #637873 Support #979286 Ink #16140F

Castleton Green 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 Castleton Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #02584E 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 35/100

Cool

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

Softness 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 57/100

Moderate

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

Naturalness 29/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 49/100

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 20/100

Very low

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

UI accent fit 66/100

High

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

Surface fit 36/100

Low

Usable as a tinted surface in measured doses.

Print safety 84/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #02584E

For UI

For branding

For interior

For fashion

People also use #02584E with

Green Prussian Blue Oxblood Platinum Dark Slate Gray

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 8.4:1. Use

Subtle surface Use #B8F2EB for cards and hover fills. Tint 80

Avoid beside #02475A — 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 #02584E 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: #02584E;
  --color-base-rgb: 2 88 78;
  --color-base-oklch: oklch(41.3% 0.073 181.7);
  --color-50: #F0FEFD;
  --color-100: #D8FDF9;
  --color-200: #B1FCF3;
  --color-300: #7AF6E7;
  --color-400: #4AE8D6;
  --color-500: #26CFBB;
  --color-600: #259D8F;
  --color-700: #216E65;
  --color-800: #194842;
  --color-900: #122C29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F0FEFD',
    100: '#D8FDF9',
    200: '#B1FCF3',
    300: '#7AF6E7',
    400: '#4AE8D6',
    500: '#26CFBB',
    600: '#259D8F',
    700: '#216E65',
    800: '#194842',
    900: '#122C29',
  },
}

$base: #02584E;
$base-ink: #FFFFFF;
$base-50: #F0FEFD;
$base-100: #D8FDF9;
$base-200: #B1FCF3;
$base-300: #7AF6E7;
$base-400: #4AE8D6;
$base-500: #26CFBB;
$base-600: #259D8F;
$base-700: #216E65;
$base-800: #194842;
$base-900: #122C29;
$base-hover: #014840;
$base-subtle: #93EEE3;

{
    "color": {
        "base": {
            "value": "#02584E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEFD",
                "type": "color"
            },
            "100": {
                "value": "#D8FDF9",
                "type": "color"
            },
            "200": {
                "value": "#B1FCF3",
                "type": "color"
            },
            "300": {
                "value": "#7AF6E7",
                "type": "color"
            },
            "400": {
                "value": "#4AE8D6",
                "type": "color"
            },
            "500": {
                "value": "#26CFBB",
                "type": "color"
            },
            "600": {
                "value": "#259D8F",
                "type": "color"
            },
            "700": {
                "value": "#216E65",
                "type": "color"
            },
            "800": {
                "value": "#194842",
                "type": "color"
            },
            "900": {
                "value": "#122C29",
                "type": "color"
            }
        }
    }
}