What color is #06406C?

#06406C is a dark, vivid cyan-blue. In RGB it is rgb(6, 64, 108), and in HSL hsl(206, 89%, 22%).

Is #06406C accessible as text?

On white, #06406C has a contrast ratio of 10.73:1 (passes WCAG AA for body text); on black it is 1.96:1 (fails). For text placed on #06406C, use white for the best readability.

What is the closest Tailwind color to #06406C?

The nearest Tailwind CSS token is sky-900 (#024A70).

What colors go well with #06406C?

#06406C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6A3106. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #06406C below.

Is #06406C good for buttons?

#06406C works well for buttons and highlights, but use white text on #06406C — black text only reaches 1.96:1, below the 4.5:1 needed for normal-size labels.

Is #06406C the same as CSS darkslategray?

No — #06406C is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#06406C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #06406C

Not just a swatch — here's how #06406C works with other colors. Named schemes with #06406C in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #06406C Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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 #06406C Anchor #141210 Accent #AFAD52 Secondary #212A32 Surface #F0EEE3

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 #06406C Anchor #2A2A2E Secondary #6D6E74 Surface #E9E7DA Accent #111E3F

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 #06406C Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233B

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 #F6F4EF Accent #06406C Secondary #566676 Support #969386 Ink #16140F

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 #06406C 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 24/100

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 43/100

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 36/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 56/100

Moderate

Workable accent with care around contrast.

Surface fit 33/100

Low

Usable as a tinted surface in measured doses.

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #06406C

For UI

For branding

For interior

For fashion

People also use #06406C with

Dark Cyan Navy Blue Espresso Gainsboro Charcoal

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 10.7:1. Use

Subtle surface Use #BEDBF1 for cards and hover fills. Tint 80

Avoid beside #061D6A — 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 #06406C 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: #06406C;
  --color-base-rgb: 6 64 108;
  --color-base-oklch: oklch(36.3% 0.093 248.2);
  --color-50: #F0F8FE;
  --color-100: #D8EDFD;
  --color-200: #B2DBFA;
  --color-300: #7EBFF1;
  --color-400: #4FA3E3;
  --color-500: #2C85C9;
  --color-600: #2A6898;
  --color-700: #234C6B;
  --color-800: #1B3346;
  --color-900: #13202B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F0F8FE',
    100: '#D8EDFD',
    200: '#B2DBFA',
    300: '#7EBFF1',
    400: '#4FA3E3',
    500: '#2C85C9',
    600: '#2A6898',
    700: '#234C6B',
    800: '#1B3346',
    900: '#13202B',
  },
}

$base: #06406C;
$base-ink: #FFFFFF;
$base-50: #F0F8FE;
$base-100: #D8EDFD;
$base-200: #B2DBFA;
$base-300: #7EBFF1;
$base-400: #4FA3E3;
$base-500: #2C85C9;
$base-600: #2A6898;
$base-700: #234C6B;
$base-800: #1B3346;
$base-900: #13202B;
$base-hover: #053255;
$base-subtle: #9BC9EC;

{
    "color": {
        "base": {
            "value": "#06406C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F8FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EDFD",
                "type": "color"
            },
            "200": {
                "value": "#B2DBFA",
                "type": "color"
            },
            "300": {
                "value": "#7EBFF1",
                "type": "color"
            },
            "400": {
                "value": "#4FA3E3",
                "type": "color"
            },
            "500": {
                "value": "#2C85C9",
                "type": "color"
            },
            "600": {
                "value": "#2A6898",
                "type": "color"
            },
            "700": {
                "value": "#234C6B",
                "type": "color"
            },
            "800": {
                "value": "#1B3346",
                "type": "color"
            },
            "900": {
                "value": "#13202B",
                "type": "color"
            }
        }
    }
}

Palettes built on #06406C

Color Lab

Pairs with #06406C

UI roles & guardrails

In real applications

Scales

Every model

Export