What color is #215580?

#215580 is a dark cyan-blue. In RGB it is rgb(33, 85, 128), and in HSL hsl(207, 59%, 32%).

Is #215580 accessible as text?

On white, #215580 has a contrast ratio of 7.85:1 (passes WCAG AA for body text); on black it is 2.68:1 (fails). For text placed on #215580, use white for the best readability.

What is the closest Tailwind color to #215580?

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

What colors go well with #215580?

#215580 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #824D21. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #215580 below.

Is #215580 good for buttons?

#215580 works well for buttons and highlights, but use white text on #215580 — black text only reaches 2.68:1, below the 4.5:1 needed for normal-size labels.

Is #215580 the same as CSS darkslategray?

No — #215580 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#215580 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #215580

Not just a swatch — here's how #215580 works with other colors. Named schemes with #215580 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #215580 Accent #A5C4C0 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 #215580 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 #215580 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4A78A0

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 #215580 Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

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 #215580 Secondary #6B7B8B 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 #215580 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 24/100

Cool

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

Softness 39/100

Low

Middle-weight — neither delicate nor heavy.

Depth 56/100

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 50/100

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 24/100

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 29/100

Low

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

Print safety 80/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #215580

For UI

For branding

For interior

For fashion

People also use #215580 with

Persian Green Midnight 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 7.8:1. Use

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

Avoid beside #213682 — 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 #215580 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: #215580;
  --color-base-rgb: 33 85 128;
  --color-base-oklch: oklch(43.6% 0.090 246.8);
  --color-50: #F2F8FC;
  --color-100: #DEECF7;
  --color-200: #BED9EE;
  --color-300: #92BBDE;
  --color-400: #689ECA;
  --color-500: #4680AE;
  --color-600: #3C6586;
  --color-700: #304A5F;
  --color-800: #22323F;
  --color-900: #171F27;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F2F8FC',
    100: '#DEECF7',
    200: '#BED9EE',
    300: '#92BBDE',
    400: '#689ECA',
    500: '#4680AE',
    600: '#3C6586',
    700: '#304A5F',
    800: '#22323F',
    900: '#171F27',
  },
}

$base: #215580;
$base-ink: #FFFFFF;
$base-50: #F2F8FC;
$base-100: #DEECF7;
$base-200: #BED9EE;
$base-300: #92BBDE;
$base-400: #689ECA;
$base-500: #4680AE;
$base-600: #3C6586;
$base-700: #304A5F;
$base-800: #22323F;
$base-900: #171F27;
$base-hover: #1B4568;
$base-subtle: #B4CDE2;

{
    "color": {
        "base": {
            "value": "#215580",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DEECF7",
                "type": "color"
            },
            "200": {
                "value": "#BED9EE",
                "type": "color"
            },
            "300": {
                "value": "#92BBDE",
                "type": "color"
            },
            "400": {
                "value": "#689ECA",
                "type": "color"
            },
            "500": {
                "value": "#4680AE",
                "type": "color"
            },
            "600": {
                "value": "#3C6586",
                "type": "color"
            },
            "700": {
                "value": "#304A5F",
                "type": "color"
            },
            "800": {
                "value": "#22323F",
                "type": "color"
            },
            "900": {
                "value": "#171F27",
                "type": "color"
            }
        }
    }
}

Palettes built on #215580

Color Lab

Pairs with #215580

UI roles & guardrails

In real applications

Scales

Every model

Export