What color is #5151D6?

#5151D6 is a medium blue-violet. In RGB it is rgb(81, 81, 214), and in HSL hsl(240, 62%, 58%).

Is #5151D6 accessible as text?

On white, #5151D6 has a contrast ratio of 6.00:1 (passes WCAG AA for body text); on black it is 3.50:1 (fails). For text placed on #5151D6, use white for the best readability.

What is the closest Tailwind color to #5151D6?

The nearest Tailwind CSS token is indigo-600 (#4F39F6).

What colors go well with #5151D6?

#5151D6 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #D6D651. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #5151D6 below.

Is #5151D6 good for buttons?

#5151D6 works well for buttons and highlights, but use white text on #5151D6 — black text only reaches 3.50:1, below the 4.5:1 needed for normal-size labels.

Is #5151D6 the same as CSS slateblue?

No — #5151D6 is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#5151D6 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #5151D6

Not just a swatch — here's how #5151D6 works with other colors. Named schemes with #5151D6 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #5151D6 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #727BF5

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

Berry & Cream Lead · 5 colors

Lead #5151D6 Surface #F6E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

Iris 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 #5151D6 Secondary #868EBC Support #9D9088 Ink #18140F

Iris 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 Iris carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #5151D6 Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

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

Sunset Warmth Glow · 5 colors

Glow #5151D6 Secondary #E86A72 Accent #F6934E Anchor #583B57 Surface #F7E7D7

Iris glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Build a working theme in the generator →

Color Lab

How #5151D6 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 16/100

Cool

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

Softness 33/100

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 26/100

Low

A faint retro warmth without tipping into sepia.

Luxury 50/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 77/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 87/100

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 69/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #5151D6

For UI

For branding

For interior

For fashion

People also use #5151D6 with

Iceberg Amethyst Citrine Gainsboro Prussian Blue

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 #E0E0F3 for cards and hover fills. Tint 80

Avoid beside #7E51D6 — 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 #5151D6 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: #5151D6;
  --color-base-rgb: 81 81 214;
  --color-base-oklch: oklch(51.6% 0.199 276.9);
  --color-50: #F2F2FD;
  --color-100: #DDDDF8;
  --color-200: #BDBDEF;
  --color-300: #9090E0;
  --color-400: #6666CC;
  --color-500: #4444B1;
  --color-600: #3A3A87;
  --color-700: #2E2E60;
  --color-800: #22223F;
  --color-900: #161627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  iris: {
    50: '#F2F2FD',
    100: '#DDDDF8',
    200: '#BDBDEF',
    300: '#9090E0',
    400: '#6666CC',
    500: '#4444B1',
    600: '#3A3A87',
    700: '#2E2E60',
    800: '#22223F',
    900: '#161627',
  },
}

$base: #5151D6;
$base-ink: #FFFFFF;
$base-50: #F2F2FD;
$base-100: #DDDDF8;
$base-200: #BDBDEF;
$base-300: #9090E0;
$base-400: #6666CC;
$base-500: #4444B1;
$base-600: #3A3A87;
$base-700: #2E2E60;
$base-800: #22223F;
$base-900: #161627;
$base-hover: #2D2DC0;
$base-subtle: #D0D0EE;

{
    "color": {
        "base": {
            "value": "#5151D6",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F2FD",
                "type": "color"
            },
            "100": {
                "value": "#DDDDF8",
                "type": "color"
            },
            "200": {
                "value": "#BDBDEF",
                "type": "color"
            },
            "300": {
                "value": "#9090E0",
                "type": "color"
            },
            "400": {
                "value": "#6666CC",
                "type": "color"
            },
            "500": {
                "value": "#4444B1",
                "type": "color"
            },
            "600": {
                "value": "#3A3A87",
                "type": "color"
            },
            "700": {
                "value": "#2E2E60",
                "type": "color"
            },
            "800": {
                "value": "#22223F",
                "type": "color"
            },
            "900": {
                "value": "#161627",
                "type": "color"
            }
        }
    }
}