What color is #2D587F?

#2D587F is a dark blue. In RGB it is rgb(45, 88, 127), and in HSL hsl(209, 48%, 34%).

Is #2D587F accessible as text?

On white, #2D587F has a contrast ratio of 7.46:1 (passes WCAG AA for body text); on black it is 2.81:1 (fails). For text placed on #2D587F, use white for the best readability.

What is the closest Tailwind color to #2D587F?

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

What colors go well with #2D587F?

#2D587F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #80552D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2D587F below.

Is #2D587F good for buttons?

#2D587F works well for buttons and highlights, but use white text on #2D587F — black text only reaches 2.81:1, below the 4.5:1 needed for normal-size labels.

Is #2D587F the same as CSS darkslategray?

No — #2D587F is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#2D587F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2D587F

Not just a swatch — here's how #2D587F works with other colors. Named schemes with #2D587F in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #2D587F Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Classic 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 #2D587F Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Classic 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 #2D587F Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #547BA0

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 #2D587F Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233B

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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #2D587F Secondary #707F8D 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 #2D587F 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 27/100

Cool

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

Softness 41/100

Moderate

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

Moderate

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

Brand distinctiveness 22/100

Low

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

UI accent fit 77/100

High

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

Surface fit 31/100

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 #2D587F

For UI

For branding

For interior

For fashion

People also use #2D587F with

Persian Green Dark Slate Blue Russet 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 7.5:1. Use

Subtle surface Use #D2DEE9 for cards and hover fills. Tint 80

Avoid beside #2D3C80 — 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 #2D587F 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: #2D587F;
  --color-base-rgb: 45 88 127;
  --color-base-oklch: oklch(44.8% 0.080 247.9);
  --color-50: #F3F7FB;
  --color-100: #E0EBF5;
  --color-200: #C3D7EA;
  --color-300: #99B9D7;
  --color-400: #719AC1;
  --color-500: #507CA5;
  --color-600: #43627F;
  --color-700: #34485B;
  --color-800: #25313C;
  --color-900: #181F25;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F3F7FB',
    100: '#E0EBF5',
    200: '#C3D7EA',
    300: '#99B9D7',
    400: '#719AC1',
    500: '#507CA5',
    600: '#43627F',
    700: '#34485B',
    800: '#25313C',
    900: '#181F25',
  },
}

$base: #2D587F;
$base-ink: #FFFFFF;
$base-50: #F3F7FB;
$base-100: #E0EBF5;
$base-200: #C3D7EA;
$base-300: #99B9D7;
$base-400: #719AC1;
$base-500: #507CA5;
$base-600: #43627F;
$base-700: #34485B;
$base-800: #25313C;
$base-900: #181F25;
$base-hover: #244667;
$base-subtle: #BACDDF;

{
    "color": {
        "base": {
            "value": "#2D587F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F7FB",
                "type": "color"
            },
            "100": {
                "value": "#E0EBF5",
                "type": "color"
            },
            "200": {
                "value": "#C3D7EA",
                "type": "color"
            },
            "300": {
                "value": "#99B9D7",
                "type": "color"
            },
            "400": {
                "value": "#719AC1",
                "type": "color"
            },
            "500": {
                "value": "#507CA5",
                "type": "color"
            },
            "600": {
                "value": "#43627F",
                "type": "color"
            },
            "700": {
                "value": "#34485B",
                "type": "color"
            },
            "800": {
                "value": "#25313C",
                "type": "color"
            },
            "900": {
                "value": "#181F25",
                "type": "color"
            }
        }
    }
}

Palettes built on #2D587F

Color Lab

Pairs with #2D587F

UI roles & guardrails

In real applications

Scales

Every model

Export