What color is #31386C?

#31386C is a dark blue-violet. In RGB it is rgb(49, 56, 108), and in HSL hsl(233, 38%, 31%).

Is #31386C accessible as text?

On white, #31386C has a contrast ratio of 10.98:1 (passes WCAG AA for body text); on black it is 1.91:1 (fails). For text placed on #31386C, use white for the best readability.

What is the closest Tailwind color to #31386C?

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

What colors go well with #31386C?

#31386C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6D6631. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #31386C below.

Is #31386C good for buttons?

#31386C works well for buttons and highlights, but use white text on #31386C — black text only reaches 1.91:1, below the 4.5:1 needed for normal-size labels.

Is #31386C the same as CSS darkslateblue?

No — #31386C is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#31386C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #31386C

Not just a swatch — here's how #31386C works with other colors. Named schemes with #31386C in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #31386C 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 #31386C 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 #31386C 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 #31386C 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #31386C Secondary #5E6376 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 #31386C 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 31/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 63/100

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 35/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 55/100

Moderate

Workable accent with care around contrast.

Surface fit 34/100

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 #31386C

For UI

For branding

For interior

For fashion

People also use #31386C 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 11.0:1. Use

Subtle surface Use #D2D4E5 for cards and hover fills. Tint 80

Avoid beside #3E316D — 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 #31386C 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: #31386C;
  --color-base-rgb: 49 56 108;
  --color-base-oklch: oklch(36.2% 0.089 275.2);
  --color-50: #F4F5FB;
  --color-100: #E2E4F3;
  --color-200: #C7CAE6;
  --color-300: #9FA5D0;
  --color-400: #7A81B8;
  --color-500: #59619C;
  --color-600: #494F79;
  --color-700: #383C57;
  --color-800: #27293A;
  --color-900: #191B24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F4F5FB',
    100: '#E2E4F3',
    200: '#C7CAE6',
    300: '#9FA5D0',
    400: '#7A81B8',
    500: '#59619C',
    600: '#494F79',
    700: '#383C57',
    800: '#27293A',
    900: '#191B24',
  },
}

$base: #31386C;
$base-ink: #FFFFFF;
$base-50: #F4F5FB;
$base-100: #E2E4F3;
$base-200: #C7CAE6;
$base-300: #9FA5D0;
$base-400: #7A81B8;
$base-500: #59619C;
$base-600: #494F79;
$base-700: #383C57;
$base-800: #27293A;
$base-900: #191B24;
$base-hover: #272D57;
$base-subtle: #BBBFD9;

{
    "color": {
        "base": {
            "value": "#31386C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F5FB",
                "type": "color"
            },
            "100": {
                "value": "#E2E4F3",
                "type": "color"
            },
            "200": {
                "value": "#C7CAE6",
                "type": "color"
            },
            "300": {
                "value": "#9FA5D0",
                "type": "color"
            },
            "400": {
                "value": "#7A81B8",
                "type": "color"
            },
            "500": {
                "value": "#59619C",
                "type": "color"
            },
            "600": {
                "value": "#494F79",
                "type": "color"
            },
            "700": {
                "value": "#383C57",
                "type": "color"
            },
            "800": {
                "value": "#27293A",
                "type": "color"
            },
            "900": {
                "value": "#191B24",
                "type": "color"
            }
        }
    }
}