What color is #31345E?

#31345E is a dark, muted blue-violet. In RGB it is rgb(49, 52, 94), and in HSL hsl(236, 31%, 28%).

Is #31345E accessible as text?

On white, #31345E has a contrast ratio of 11.78:1 (passes WCAG AA for body text); on black it is 1.78:1 (fails). For text placed on #31345E, use white for the best readability.

What is the closest Tailwind color to #31345E?

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

What colors go well with #31345E?

#31345E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5E5B31. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #31345E below.

Is #31345E good for buttons?

#31345E works well for buttons and highlights, but use white text on #31345E — black text only reaches 1.78:1, below the 4.5:1 needed for normal-size labels.

Is #31345E the same as CSS darkslateblue?

No — #31345E is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#31345E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #31345E

Not just a swatch — here's how #31345E works with other colors. Named schemes with #31345E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #31345E Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

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 #31345E 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 #31345E Secondary #7F4534 Surface #EDD7C2 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 #31345E Anchor #141210 Accent #DC9758 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 #31345E Secondary #5B5E6D 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 #31345E 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 42/100

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 28/100

Low

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

UI accent fit 46/100

Moderate

Workable accent with care around contrast.

Surface fit 40/100

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 #31345E

For UI

For branding

For interior

For fashion

People also use #31345E with

Teal Blue Charcoal Ebony 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 #D2D3E2 for cards and hover fills. Tint 80

Avoid beside #3D315E — 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 #31345E 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: #31345E;
  --color-base-rgb: 49 52 94;
  --color-base-oklch: oklch(34.4% 0.073 278.7);
  --color-50: #F5F5FA;
  --color-100: #E4E5F1;
  --color-200: #CACBE3;
  --color-300: #A4A6CC;
  --color-400: #7F83B3;
  --color-500: #5F6396;
  --color-600: #4E5074;
  --color-700: #3B3D54;
  --color-800: #292A38;
  --color-900: #1A1B23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F5F5FA',
    100: '#E4E5F1',
    200: '#CACBE3',
    300: '#A4A6CC',
    400: '#7F83B3',
    500: '#5F6396',
    600: '#4E5074',
    700: '#3B3D54',
    800: '#292A38',
    900: '#1A1B23',
  },
}

$base: #31345E;
$base-ink: #FFFFFF;
$base-50: #F5F5FA;
$base-100: #E4E5F1;
$base-200: #CACBE3;
$base-300: #A4A6CC;
$base-400: #7F83B3;
$base-500: #5F6396;
$base-600: #4E5074;
$base-700: #3B3D54;
$base-800: #292A38;
$base-900: #1A1B23;
$base-hover: #272A4B;
$base-subtle: #BBBDD5;

{
    "color": {
        "base": {
            "value": "#31345E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F5FA",
                "type": "color"
            },
            "100": {
                "value": "#E4E5F1",
                "type": "color"
            },
            "200": {
                "value": "#CACBE3",
                "type": "color"
            },
            "300": {
                "value": "#A4A6CC",
                "type": "color"
            },
            "400": {
                "value": "#7F83B3",
                "type": "color"
            },
            "500": {
                "value": "#5F6396",
                "type": "color"
            },
            "600": {
                "value": "#4E5074",
                "type": "color"
            },
            "700": {
                "value": "#3B3D54",
                "type": "color"
            },
            "800": {
                "value": "#292A38",
                "type": "color"
            },
            "900": {
                "value": "#1A1B23",
                "type": "color"
            }
        }
    }
}

Palettes built on #31345E

Color Lab

Pairs with #31345E

UI roles & guardrails

In real applications

Scales

Every model

Export