What color is #2F355B?

#2F355B is a dark, muted blue-violet. In RGB it is rgb(47, 53, 91), and in HSL hsl(232, 32%, 27%).

Is #2F355B accessible as text?

On white, #2F355B has a contrast ratio of 11.79:1 (passes WCAG AA for body text); on black it is 1.78:1 (fails). For text placed on #2F355B, use white for the best readability.

What is the closest Tailwind color to #2F355B?

The nearest Tailwind CSS token is mauve-700 (#463947).

What colors go well with #2F355B?

#2F355B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5B552F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2F355B below.

Is #2F355B good for buttons?

#2F355B works well for buttons and highlights, but use white text on #2F355B — black text only reaches 1.78:1, below the 4.5:1 needed for normal-size labels.

Is #2F355B the same as CSS darkslategray?

No — #2F355B is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#2F355B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2F355B

Not just a swatch — here's how #2F355B works with other colors. Named schemes with #2F355B in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #2F355B Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #21344A

Yale 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 #2F355B Secondary #AEB4B8 Surface #F1F2F0 Support #7E92A7 Anchor #2E3236

Yale Blue 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 #2F355B Secondary #7F4534 Surface #EED7C2 Accent #365247 Anchor #582239

Yale 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.

Luxury Packaging Feature · 5 colors

Feature #2F355B Anchor #141210 Accent #DC9759 Secondary #262833 Surface #F3ECE3

Yale Blue carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #2F355B Secondary #5A5E6C Support #9D9088 Ink #18140F

Yale 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 Yale Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #2F355B 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 36/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 64/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 40/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 26/100

Low

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

UI accent fit 44/100

Moderate

Workable accent with care around contrast.

Surface fit 42/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #2F355B

For UI

For branding

For interior

For fashion

People also use #2F355B with

Teal Blue Russian Violet Army Green Gainsboro Prussian Blue

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 11.8:1. Use

Subtle surface Use #D1D3E2 for cards and hover fills. Tint 80

Avoid beside #382F5B — 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 #2F355B 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: #2F355B;
  --color-base-rgb: 47 53 91;
  --color-base-oklch: oklch(34.3% 0.067 275.5);
  --color-50: #F5F5FA;
  --color-100: #E4E6F2;
  --color-200: #C9CDE3;
  --color-300: #A3A8CC;
  --color-400: #7F86B3;
  --color-500: #5E6697;
  --color-600: #4D5275;
  --color-700: #3A3E54;
  --color-800: #292B38;
  --color-900: #1A1B23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F5F5FA',
    100: '#E4E6F2',
    200: '#C9CDE3',
    300: '#A3A8CC',
    400: '#7F86B3',
    500: '#5E6697',
    600: '#4D5275',
    700: '#3A3E54',
    800: '#292B38',
    900: '#1A1B23',
  },
}

$base: #2F355B;
$base-ink: #FFFFFF;
$base-50: #F5F5FA;
$base-100: #E4E6F2;
$base-200: #C9CDE3;
$base-300: #A3A8CC;
$base-400: #7F86B3;
$base-500: #5E6697;
$base-600: #4D5275;
$base-700: #3A3E54;
$base-800: #292B38;
$base-900: #1A1B23;
$base-hover: #252A49;
$base-subtle: #BABDD5;

{
    "color": {
        "base": {
            "value": "#2F355B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F5FA",
                "type": "color"
            },
            "100": {
                "value": "#E4E6F2",
                "type": "color"
            },
            "200": {
                "value": "#C9CDE3",
                "type": "color"
            },
            "300": {
                "value": "#A3A8CC",
                "type": "color"
            },
            "400": {
                "value": "#7F86B3",
                "type": "color"
            },
            "500": {
                "value": "#5E6697",
                "type": "color"
            },
            "600": {
                "value": "#4D5275",
                "type": "color"
            },
            "700": {
                "value": "#3A3E54",
                "type": "color"
            },
            "800": {
                "value": "#292B38",
                "type": "color"
            },
            "900": {
                "value": "#1A1B23",
                "type": "color"
            }
        }
    }
}

Palettes built on #2F355B

Color Lab

Pairs with #2F355B

UI roles & guardrails

In real applications

Scales

Every model

Export