What color is #2D366C?

#2D366C is a dark blue-violet. In RGB it is rgb(45, 54, 108), and in HSL hsl(231, 41%, 30%).

Is #2D366C accessible as text?

On white, #2D366C has a contrast ratio of 11.32:1 (passes WCAG AA for body text); on black it is 1.86:1 (fails). For text placed on #2D366C, use white for the best readability.

What is the closest Tailwind color to #2D366C?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #2D366C?

#2D366C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6C622D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2D366C below.

Is #2D366C good for buttons?

#2D366C works well for buttons and highlights, but use white text on #2D366C — black text only reaches 1.86:1, below the 4.5:1 needed for normal-size labels.

Is #2D366C the same as CSS darkslateblue?

No — #2D366C is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#2D366C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2D366C

Not just a swatch — here's how #2D366C works with other colors. Named schemes with #2D366C in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #2D366C Accent #A5C4C2 Surface #EAD5C0 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.

Luxury Packaging Feature · 5 colors

Feature #2D366C Anchor #141210 Accent #DC9659 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.

Moody Editorial Color · 5 colors

Color #2D366C Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #1F173A

Yale Blue adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Yale Blue.

Vintage Leather Lead · 5 colors

Lead #2D366C Secondary #7F4535 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #2D366C Secondary #5C6175 Support #9D8F88 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 #2D366C 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 30/100

Cool

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

Softness 32/100

Low

Firm and assertive — carries weight and contrast.

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 45/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 69/100

High

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

Brand distinctiveness 36/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 54/100

Moderate

Workable accent with care around contrast.

Surface fit 33/100

Low

Usable as a tinted surface in measured doses.

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #2D366C

For UI

For branding

For interior

For fashion

People also use #2D366C with

Teal Blue Dark Slate Blue Dark Olive 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 11.3:1. Use

Subtle surface Use #D1D4E6 for cards and hover fills. Tint 80

Avoid beside #392D6C — 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 #2D366C 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: #2D366C;
  --color-base-rgb: 45 54 108;
  --color-base-oklch: oklch(35.5% 0.094 273.6);
  --color-50: #F4F5FB;
  --color-100: #E2E4F3;
  --color-200: #C6CBE7;
  --color-300: #9DA5D2;
  --color-400: #7781BB;
  --color-500: #56619E;
  --color-600: #474F7A;
  --color-700: #373C58;
  --color-800: #272A3A;
  --color-900: #191B24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F4F5FB',
    100: '#E2E4F3',
    200: '#C6CBE7',
    300: '#9DA5D2',
    400: '#7781BB',
    500: '#56619E',
    600: '#474F7A',
    700: '#373C58',
    800: '#272A3A',
    900: '#191B24',
  },
}

$base: #2D366C;
$base-ink: #FFFFFF;
$base-50: #F4F5FB;
$base-100: #E2E4F3;
$base-200: #C6CBE7;
$base-300: #9DA5D2;
$base-400: #7781BB;
$base-500: #56619E;
$base-600: #474F7A;
$base-700: #373C58;
$base-800: #272A3A;
$base-900: #191B24;
$base-hover: #242C56;
$base-subtle: #B9BEDA;

{
    "color": {
        "base": {
            "value": "#2D366C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F5FB",
                "type": "color"
            },
            "100": {
                "value": "#E2E4F3",
                "type": "color"
            },
            "200": {
                "value": "#C6CBE7",
                "type": "color"
            },
            "300": {
                "value": "#9DA5D2",
                "type": "color"
            },
            "400": {
                "value": "#7781BB",
                "type": "color"
            },
            "500": {
                "value": "#56619E",
                "type": "color"
            },
            "600": {
                "value": "#474F7A",
                "type": "color"
            },
            "700": {
                "value": "#373C58",
                "type": "color"
            },
            "800": {
                "value": "#272A3A",
                "type": "color"
            },
            "900": {
                "value": "#191B24",
                "type": "color"
            }
        }
    }
}