What color is #255CCB?

#255CCB is a medium blue. In RGB it is rgb(37, 92, 203), and in HSL hsl(220, 69%, 47%).

Is #255CCB accessible as text?

On white, #255CCB has a contrast ratio of 6.05:1 (passes WCAG AA for body text); on black it is 3.47:1 (fails). For text placed on #255CCB, use white for the best readability.

What is the closest Tailwind color to #255CCB?

The nearest Tailwind CSS token is blue-700 (#1447E6).

What colors go well with #255CCB?

#255CCB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CB9325. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #255CCB below.

Is #255CCB good for buttons?

#255CCB works well for buttons and highlights, but use white text on #255CCB — black text only reaches 3.47:1, below the 4.5:1 needed for normal-size labels.

Is #255CCB the same as CSS royalblue?

No — #255CCB is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#255CCB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #255CCB

Not just a swatch — here's how #255CCB works with other colors. Named schemes with #255CCB in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #255CCB Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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 #255CCB Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4F84EA

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 #255CCB Secondary #7F4536 Surface #E1DDC1 Accent #375246 Anchor #57223A

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 #255CCB Surface #F6E5D8 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 #F8F4EF Accent #255CCB Secondary #798FB6 Support #9D8F88 Ink #18140F

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.

Build a working theme in the generator →

Color Lab

How #255CCB 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 8/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 52/100

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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 49/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 92/100

Very high

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

Surface fit 8/100

Very low

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

Print safety 66/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #255CCB

For UI

For branding

For interior

For fashion

People also use #255CCB with

Lagoon Blue Han Purple Caramel 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 6.0:1. Use

Subtle surface Use #D7DFF1 for cards and hover fills. Tint 80

Avoid beside #2525CB — 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 #255CCB 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: #255CCB;
  --color-base-rgb: 37 92 203;
  --color-base-oklch: oklch(50.6% 0.182 262.2);
  --color-50: #F2F5FD;
  --color-100: #DCE6F9;
  --color-200: #BACDF2;
  --color-300: #8BA9E4;
  --color-400: #6086D2;
  --color-500: #3E66B7;
  --color-600: #36538C;
  --color-700: #2C3E63;
  --color-800: #202B41;
  --color-900: #151B28;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  denim-blue: {
    50: '#F2F5FD',
    100: '#DCE6F9',
    200: '#BACDF2',
    300: '#8BA9E4',
    400: '#6086D2',
    500: '#3E66B7',
    600: '#36538C',
    700: '#2C3E63',
    800: '#202B41',
    900: '#151B28',
  },
}

$base: #255CCB;
$base-ink: #FFFFFF;
$base-50: #F2F5FD;
$base-100: #DCE6F9;
$base-200: #BACDF2;
$base-300: #8BA9E4;
$base-400: #6086D2;
$base-500: #3E66B7;
$base-600: #36538C;
$base-700: #2C3E63;
$base-800: #202B41;
$base-900: #151B28;
$base-hover: #1E4AA2;
$base-subtle: #C1CFEC;

{
    "color": {
        "base": {
            "value": "#255CCB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F5FD",
                "type": "color"
            },
            "100": {
                "value": "#DCE6F9",
                "type": "color"
            },
            "200": {
                "value": "#BACDF2",
                "type": "color"
            },
            "300": {
                "value": "#8BA9E4",
                "type": "color"
            },
            "400": {
                "value": "#6086D2",
                "type": "color"
            },
            "500": {
                "value": "#3E66B7",
                "type": "color"
            },
            "600": {
                "value": "#36538C",
                "type": "color"
            },
            "700": {
                "value": "#2C3E63",
                "type": "color"
            },
            "800": {
                "value": "#202B41",
                "type": "color"
            },
            "900": {
                "value": "#151B28",
                "type": "color"
            }
        }
    }
}

Palettes built on #255CCB

Color Lab

Pairs with #255CCB

UI roles & guardrails

In real applications

Scales

Every model

Export