What color is #5145BC?

#5145BC is a medium indigo. In RGB it is rgb(81, 69, 188), and in HSL hsl(246, 47%, 50%).

Is #5145BC accessible as text?

On white, #5145BC has a contrast ratio of 7.17:1 (passes WCAG AA for body text); on black it is 2.93:1 (fails). For text placed on #5145BC, use white for the best readability.

What is the closest Tailwind color to #5145BC?

The nearest Tailwind CSS token is indigo-700 (#432DD7).

What colors go well with #5145BC?

#5145BC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AFBB44. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #5145BC below.

Is #5145BC good for buttons?

#5145BC works well for buttons and highlights, but use white text on #5145BC — black text only reaches 2.93:1, below the 4.5:1 needed for normal-size labels.

Is #5145BC the same as CSS slateblue?

No — #5145BC is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#5145BC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #5145BC

Not just a swatch — here's how #5145BC works with other colors. Named schemes with #5145BC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #5145BC Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

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

Vintage Leather Lead · 5 colors

Lead #5145BC Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582238

Cerulean plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Modern Café Dominant · 5 colors

Dominant #5145BC Anchor #3B2923 Surface #F3E1D2 Accent #759F7C Secondary #3C3734

Cerulean anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Berry & Cream Lead · 5 colors

Lead #5145BC Surface #F5E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #332B2F

Cerulean 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 #5145BC Secondary #7E80AA Support #9D9088 Ink #18140F

Cerulean 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 Cerulean carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #5145BC 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 19/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 55/100

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 31/100

Low

A faint retro warmth without tipping into sepia.

Luxury 55/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 49/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 89/100

Very high

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

Surface fit 9/100

Very low

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

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #5145BC

For UI

For branding

For interior

For fashion

People also use #5145BC with

Ocean Blue Dark Orchid Peridot 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 7.2:1. Use

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

Avoid beside #7844BB — 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 #5145BC 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: #5145BC;
  --color-base-rgb: 81 69 188;
  --color-base-oklch: oklch(47.5% 0.180 281.6);
  --color-50: #F4F3FB;
  --color-100: #E2E0F5;
  --color-200: #C7C3E9;
  --color-300: #9F99D6;
  --color-400: #7A72C0;
  --color-500: #5951A4;
  --color-600: #49447E;
  --color-700: #38345A;
  --color-800: #27253C;
  --color-900: #1A1825;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F4F3FB',
    100: '#E2E0F5',
    200: '#C7C3E9',
    300: '#9F99D6',
    400: '#7A72C0',
    500: '#5951A4',
    600: '#49447E',
    700: '#38345A',
    800: '#27253C',
    900: '#1A1825',
  },
}

$base: #5145BC;
$base-ink: #FFFFFF;
$base-50: #F4F3FB;
$base-100: #E2E0F5;
$base-200: #C7C3E9;
$base-300: #9F99D6;
$base-400: #7A72C0;
$base-500: #5951A4;
$base-600: #49447E;
$base-700: #38345A;
$base-800: #27253C;
$base-900: #1A1825;
$base-hover: #403696;
$base-subtle: #CECBE6;

{
    "color": {
        "base": {
            "value": "#5145BC",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F3FB",
                "type": "color"
            },
            "100": {
                "value": "#E2E0F5",
                "type": "color"
            },
            "200": {
                "value": "#C7C3E9",
                "type": "color"
            },
            "300": {
                "value": "#9F99D6",
                "type": "color"
            },
            "400": {
                "value": "#7A72C0",
                "type": "color"
            },
            "500": {
                "value": "#5951A4",
                "type": "color"
            },
            "600": {
                "value": "#49447E",
                "type": "color"
            },
            "700": {
                "value": "#38345A",
                "type": "color"
            },
            "800": {
                "value": "#27253C",
                "type": "color"
            },
            "900": {
                "value": "#1A1825",
                "type": "color"
            }
        }
    }
}

Palettes built on #5145BC

Color Lab

Pairs with #5145BC

UI roles & guardrails

In real applications

Scales

Every model

Export