What color is #3C3A75?

#3C3A75 is a dark, muted blue-violet. In RGB it is rgb(60, 58, 117), and in HSL hsl(242, 34%, 34%).

Is #3C3A75 accessible as text?

On white, #3C3A75 has a contrast ratio of 10.22:1 (passes WCAG AA for body text); on black it is 2.05:1 (fails). For text placed on #3C3A75, use white for the best readability.

What is the closest Tailwind color to #3C3A75?

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

What colors go well with #3C3A75?

#3C3A75 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #727439. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3C3A75 below.

Is #3C3A75 good for buttons?

#3C3A75 works well for buttons and highlights, but use white text on #3C3A75 — black text only reaches 2.05:1, below the 4.5:1 needed for normal-size labels.

Is #3C3A75 the same as CSS darkslateblue?

No — #3C3A75 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#3C3A75 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3C3A75

Not just a swatch — here's how #3C3A75 works with other colors. Named schemes with #3C3A75 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3C3A75 Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

Dark Slate Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Vintage Leather Lead · 5 colors

Lead #3C3A75 Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582238

Dark Slate 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.

Modern Café Dominant · 5 colors

Dominant #3C3A75 Anchor #3B2923 Surface #F3E1D2 Accent #759F7C Secondary #3C3734

Dark Slate Blue 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.

Berry & Cream Lead · 5 colors

Lead #3C3A75 Surface #F5E5D7 Anchor #5B2142 Accent #E5C2C9 Secondary #332B2F

Dark Slate Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #3C3A75 Secondary #66677D Support #9D9088 Ink #18140F

Dark Slate 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 Dark Slate Blue carrying the quiet middle.

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Color Lab

How #3C3A75 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 32/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

High

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 67/100

High

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

Brand distinctiveness 27/100

Low

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

UI accent fit 64/100

High

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

Surface fit 30/100

Low

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #3C3A75

For UI

For branding

For interior

For fashion

People also use #3C3A75 with

Teal Blue Eminence Olive Brown 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 10.2:1. Use

Subtle surface Use #D6D5E6 for cards and hover fills. Tint 80

Avoid beside #4F3974 — 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 #3C3A75 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: #3C3A75;
  --color-base-rgb: 60 58 117;
  --color-base-oklch: oklch(38.2% 0.098 282.2);
  --color-50: #F5F4FA;
  --color-100: #E4E3F2;
  --color-200: #C9C8E4;
  --color-300: #A3A2CE;
  --color-400: #7F7DB5;
  --color-500: #5E5C98;
  --color-600: #4D4C76;
  --color-700: #3B3A55;
  --color-800: #292839;
  --color-900: #1A1A23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-blue: {
    50: '#F5F4FA',
    100: '#E4E3F2',
    200: '#C9C8E4',
    300: '#A3A2CE',
    400: '#7F7DB5',
    500: '#5E5C98',
    600: '#4D4C76',
    700: '#3B3A55',
    800: '#292839',
    900: '#1A1A23',
  },
}

$base: #3C3A75;
$base-ink: #FFFFFF;
$base-50: #F5F4FA;
$base-100: #E4E3F2;
$base-200: #C9C8E4;
$base-300: #A3A2CE;
$base-400: #7F7DB5;
$base-500: #5E5C98;
$base-600: #4D4C76;
$base-700: #3B3A55;
$base-800: #292839;
$base-900: #1A1A23;
$base-hover: #2F2E5D;
$base-subtle: #C0BFDA;

{
    "color": {
        "base": {
            "value": "#3C3A75",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F4FA",
                "type": "color"
            },
            "100": {
                "value": "#E4E3F2",
                "type": "color"
            },
            "200": {
                "value": "#C9C8E4",
                "type": "color"
            },
            "300": {
                "value": "#A3A2CE",
                "type": "color"
            },
            "400": {
                "value": "#7F7DB5",
                "type": "color"
            },
            "500": {
                "value": "#5E5C98",
                "type": "color"
            },
            "600": {
                "value": "#4D4C76",
                "type": "color"
            },
            "700": {
                "value": "#3B3A55",
                "type": "color"
            },
            "800": {
                "value": "#292839",
                "type": "color"
            },
            "900": {
                "value": "#1A1A23",
                "type": "color"
            }
        }
    }
}

Palettes built on #3C3A75

Color Lab

Pairs with #3C3A75

UI roles & guardrails

In real applications

Scales

Every model

Export