What color is #1966CB?

#1966CB is a medium, vivid blue. In RGB it is rgb(25, 102, 203), and in HSL hsl(214, 78%, 45%).

Is #1966CB accessible as text?

On white, #1966CB has a contrast ratio of 5.52:1 (passes WCAG AA for body text); on black it is 3.80:1 (fails). For text placed on #1966CB, use white for the best readability.

What is the closest Tailwind color to #1966CB?

The nearest Tailwind CSS token is sky-700 (#0069A8).

What colors go well with #1966CB?

#1966CB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CC7F19. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1966CB below.

Is #1966CB good for buttons?

#1966CB works well for buttons and highlights, but use white text on #1966CB — black text only reaches 3.80:1, below the 4.5:1 needed for normal-size labels.

Is #1966CB the same as CSS royalblue?

No — #1966CB is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#1966CB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1966CB

Not just a swatch — here's how #1966CB works with other colors. Named schemes with #1966CB in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #1966CB Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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

Tech Product Signal · 5 colors

Signal #1966CB Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4C8DEA

Denim Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Denim Blue.

Vintage Leather Lead · 5 colors

Lead #1966CB Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57223B

Denim 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.

Berry & Cream Lead · 5 colors

Lead #1966CB Surface #EDE9D6 Anchor #5A2144 Accent #E4C2CA Secondary #322B2F

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #1966CB Secondary #7C95B9 Support #9D8F89 Ink #16140F

Denim 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 Denim Blue carrying the quiet middle.

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Color Lab

How #1966CB 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 6/100

Cool

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 50/100

Moderate

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 47/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 96/100

Very high

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

Surface fit 10/100

Very low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 65/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #1966CB

For UI

For branding

For interior

For fashion

People also use #1966CB with

Turquoise Medium Blue Ochre Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

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 5.5:1. Use

Subtle surface Use #D3E1F3 for cards and hover fills. Tint 80

Avoid beside #192BCC — 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 #1966CB 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: #1966CB;
  --color-base-rgb: 25 102 203;
  --color-base-oklch: oklch(52.4% 0.173 257.6);
  --color-50: #F1F6FE;
  --color-100: #DAE8FB;
  --color-200: #B6D2F6;
  --color-300: #85B1EA;
  --color-400: #5890DA;
  --color-500: #3671BF;
  --color-600: #305A91;
  --color-700: #284367;
  --color-800: #1E2E43;
  --color-900: #141D29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  denim-blue: {
    50: '#F1F6FE',
    100: '#DAE8FB',
    200: '#B6D2F6',
    300: '#85B1EA',
    400: '#5890DA',
    500: '#3671BF',
    600: '#305A91',
    700: '#284367',
    800: '#1E2E43',
    900: '#141D29',
  },
}

$base: #1966CB;
$base-ink: #FFFFFF;
$base-50: #F1F6FE;
$base-100: #DAE8FB;
$base-200: #B6D2F6;
$base-300: #85B1EA;
$base-400: #5890DA;
$base-500: #3671BF;
$base-600: #305A91;
$base-700: #284367;
$base-800: #1E2E43;
$base-900: #141D29;
$base-hover: #1452A3;
$base-subtle: #BCD2EE;

{
    "color": {
        "base": {
            "value": "#1966CB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F6FE",
                "type": "color"
            },
            "100": {
                "value": "#DAE8FB",
                "type": "color"
            },
            "200": {
                "value": "#B6D2F6",
                "type": "color"
            },
            "300": {
                "value": "#85B1EA",
                "type": "color"
            },
            "400": {
                "value": "#5890DA",
                "type": "color"
            },
            "500": {
                "value": "#3671BF",
                "type": "color"
            },
            "600": {
                "value": "#305A91",
                "type": "color"
            },
            "700": {
                "value": "#284367",
                "type": "color"
            },
            "800": {
                "value": "#1E2E43",
                "type": "color"
            },
            "900": {
                "value": "#141D29",
                "type": "color"
            }
        }
    }
}

Palettes built on #1966CB

Color Lab

Pairs with #1966CB

UI roles & guardrails

In real applications

Scales

Every model

Export