What color is #3A3364?

#3A3364 is a dark, muted indigo. In RGB it is rgb(58, 51, 100), and in HSL hsl(249, 32%, 30%).

Is #3A3364 accessible as text?

On white, #3A3364 has a contrast ratio of 11.43:1 (passes WCAG AA for body text); on black it is 1.84:1 (fails). For text placed on #3A3364, use white for the best readability.

What is the closest Tailwind color to #3A3364?

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

What colors go well with #3A3364?

#3A3364 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5E6534. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3A3364 below.

Is #3A3364 good for buttons?

#3A3364 works well for buttons and highlights, but use white text on #3A3364 — black text only reaches 1.84:1, below the 4.5:1 needed for normal-size labels.

Is #3A3364 the same as CSS darkslateblue?

No — #3A3364 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#3A3364 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3A3364

Not just a swatch — here's how #3A3364 works with other colors. Named schemes with #3A3364 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3A3364 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

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 #3A3364 Secondary #AFB4B8 Surface #F1F2F0 Support #7F92A7 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 #3A3364 Secondary #7E4633 Surface #EDD8C2 Accent #365247 Anchor #582238

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 #3A3364 Anchor #141210 Accent #DB9757 Secondary #282732 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 #3A3364 Secondary #605F72 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 #3A3364 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 37/100

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 47/100

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 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 51/100

Moderate

Workable accent with care around contrast.

Surface fit 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #3A3364

For UI

For branding

For interior

For fashion

People also use #3A3364 with

Lapis Lazuli Byzantium 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 11.4:1. Use

Subtle surface Use #D6D3E4 for cards and hover fills. Tint 80

Avoid beside #4C3465 — 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 #3A3364 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #3A3364;
  --color-base-rgb: 58 51 100;
  --color-base-oklch: oklch(35.4% 0.083 287.9);
  --color-50: #F5F5FA;
  --color-100: #E6E4F2;
  --color-200: #CDC9E3;
  --color-300: #A9A3CC;
  --color-400: #867FB3;
  --color-500: #675E97;
  --color-600: #534D75;
  --color-700: #3E3A54;
  --color-800: #2B2938;
  --color-900: #1C1A23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F5F5FA',
    100: '#E6E4F2',
    200: '#CDC9E3',
    300: '#A9A3CC',
    400: '#867FB3',
    500: '#675E97',
    600: '#534D75',
    700: '#3E3A54',
    800: '#2B2938',
    900: '#1C1A23',
  },
}

$base: #3A3364;
$base-ink: #FFFFFF;
$base-50: #F5F5FA;
$base-100: #E6E4F2;
$base-200: #CDC9E3;
$base-300: #A9A3CC;
$base-400: #867FB3;
$base-500: #675E97;
$base-600: #534D75;
$base-700: #3E3A54;
$base-800: #2B2938;
$base-900: #1C1A23;
$base-hover: #2F2A51;
$base-subtle: #C0BCD6;

{
    "color": {
        "base": {
            "value": "#3A3364",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F5FA",
                "type": "color"
            },
            "100": {
                "value": "#E6E4F2",
                "type": "color"
            },
            "200": {
                "value": "#CDC9E3",
                "type": "color"
            },
            "300": {
                "value": "#A9A3CC",
                "type": "color"
            },
            "400": {
                "value": "#867FB3",
                "type": "color"
            },
            "500": {
                "value": "#675E97",
                "type": "color"
            },
            "600": {
                "value": "#534D75",
                "type": "color"
            },
            "700": {
                "value": "#3E3A54",
                "type": "color"
            },
            "800": {
                "value": "#2B2938",
                "type": "color"
            },
            "900": {
                "value": "#1C1A23",
                "type": "color"
            }
        }
    }
}