What color is #215951?

#215951 is a dark teal. In RGB it is rgb(33, 89, 81), and in HSL hsl(171, 46%, 24%).

Is #215951 accessible as text?

On white, #215951 has a contrast ratio of 8.04:1 (passes WCAG AA for body text); on black it is 2.61:1 (fails). For text placed on #215951, use white for the best readability.

What is the closest Tailwind color to #215951?

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

What colors go well with #215951?

#215951 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #592129. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #215951 below.

Is #215951 good for buttons?

#215951 works well for buttons and highlights, but use white text on #215951 — black text only reaches 2.61:1, below the 4.5:1 needed for normal-size labels.

Is #215951 the same as CSS darkslategray?

No — #215951 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#215951 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #215951

Not just a swatch — here's how #215951 works with other colors. Named schemes with #215951 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #215951 Accent #A7C4BC Surface #E0DABE Secondary #9AA0A0 Anchor #1C3549

Dark Slate Gray 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 #215951 Secondary #AEB4B7 Surface #F1F2F0 Support #7994A4 Anchor #2E3236

Dark Slate Gray 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 #215951 Secondary #724F18 Surface #E4DCC0 Accent #3A5142 Anchor #5B241E

Dark Slate Gray 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 #215951 Anchor #382B1E Surface #ECE4D0 Accent #829C71 Secondary #3A3833

Dark Slate Gray 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 #215951 Secondary #697A77 Support #979286 Ink #16140F

Dark Slate Gray 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 Dark Slate Gray carrying the quiet middle.

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Color Lab

How #215951 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 38/100

Cool

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 56/100

Moderate

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

Naturalness 23/100

Low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 46/100

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 23/100

Low

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

UI accent fit 63/100

High

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

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #215951

For UI

For branding

For interior

For fashion

People also use #215951 with

Fern Green Charcoal Rosewood 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 8.0:1. Use

Subtle surface Use #CBE5E1 for cards and hover fills. Tint 80

Avoid beside #214F59 — 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 #215951 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: #215951;
  --color-base-rgb: 33 89 81;
  --color-base-oklch: oklch(42.4% 0.060 182.5);
  --color-50: #F3FBFA;
  --color-100: #E1F5F2;
  --color-200: #C4E9E3;
  --color-300: #9AD5CC;
  --color-400: #73BFB4;
  --color-500: #52A397;
  --color-600: #447E75;
  --color-700: #355A54;
  --color-800: #253C38;
  --color-900: #182523;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F3FBFA',
    100: '#E1F5F2',
    200: '#C4E9E3',
    300: '#9AD5CC',
    400: '#73BFB4',
    500: '#52A397',
    600: '#447E75',
    700: '#355A54',
    800: '#253C38',
    900: '#182523',
  },
}

$base: #215951;
$base-ink: #FFFFFF;
$base-50: #F3FBFA;
$base-100: #E1F5F2;
$base-200: #C4E9E3;
$base-300: #9AD5CC;
$base-400: #73BFB4;
$base-500: #52A397;
$base-600: #447E75;
$base-700: #355A54;
$base-800: #253C38;
$base-900: #182523;
$base-hover: #1A4741;
$base-subtle: #B1D9D3;

{
    "color": {
        "base": {
            "value": "#215951",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FBFA",
                "type": "color"
            },
            "100": {
                "value": "#E1F5F2",
                "type": "color"
            },
            "200": {
                "value": "#C4E9E3",
                "type": "color"
            },
            "300": {
                "value": "#9AD5CC",
                "type": "color"
            },
            "400": {
                "value": "#73BFB4",
                "type": "color"
            },
            "500": {
                "value": "#52A397",
                "type": "color"
            },
            "600": {
                "value": "#447E75",
                "type": "color"
            },
            "700": {
                "value": "#355A54",
                "type": "color"
            },
            "800": {
                "value": "#253C38",
                "type": "color"
            },
            "900": {
                "value": "#182523",
                "type": "color"
            }
        }
    }
}

Palettes built on #215951

Color Lab

Pairs with #215951

UI roles & guardrails

In real applications

Scales

Every model

Export