What color is #685CDB?

#685CDB is a medium indigo. In RGB it is rgb(104, 92, 219), and in HSL hsl(246, 64%, 61%).

Is #685CDB accessible as text?

On white, #685CDB has a contrast ratio of 5.07:1 (passes WCAG AA for body text); on black it is 4.14:1 (fails). For text placed on #685CDB, use white for the best readability.

What is the closest Tailwind color to #685CDB?

The nearest Tailwind CSS token is indigo-500 (#615FFF).

What colors go well with #685CDB?

#685CDB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CEDB5C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #685CDB below.

Is #685CDB good for buttons?

#685CDB works well for buttons and highlights, but use white text on #685CDB — black text only reaches 4.14:1, below the 4.5:1 needed for normal-size labels.

Is #685CDB the same as CSS slateblue?

No — #685CDB is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#685CDB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #685CDB

Not just a swatch — here's how #685CDB works with other colors. Named schemes with #685CDB in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #685CDB Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #8A85FA

Slate 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 Slate Blue.

Berry & Cream Lead · 5 colors

Lead #685CDB Surface #F5E5D7 Anchor #5B2142 Accent #E5C2C9 Secondary #332B2F

Slate 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 #685CDB Secondary #9798C5 Support #9D9088 Ink #18140F

Slate 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 Slate Blue carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #685CDB Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

Slate Blue 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 #685CDB Secondary #E86A70 Accent #F5934D Anchor #583B57 Surface #F7E7D7

Slate Blue 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 #685CDB 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 20/100

Cool

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

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 47/100

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 32/100

Low

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 72/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 91/100

Very high

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

Surface fit 13/100

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 #685CDB

For UI

For branding

For interior

For fashion

People also use #685CDB with

Iceberg Medium Orchid Pear 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 5.1:1. Use

Subtle surface Use #E4E2F4 for cards and hover fills. Tint 80

Avoid beside #935CDB — 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 #685CDB 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: #685CDB;
  --color-base-rgb: 104 92 219;
  --color-base-oklch: oklch(55.5% 0.187 282.7);
  --color-50: #F3F2FD;
  --color-100: #E0DDF8;
  --color-200: #C1BCF0;
  --color-300: #978EE1;
  --color-400: #6F64CE;
  --color-500: #4D42B3;
  --color-600: #413989;
  --color-700: #332E61;
  --color-800: #242140;
  --color-900: #181627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  slate-blue: {
    50: '#F3F2FD',
    100: '#E0DDF8',
    200: '#C1BCF0',
    300: '#978EE1',
    400: '#6F64CE',
    500: '#4D42B3',
    600: '#413989',
    700: '#332E61',
    800: '#242140',
    900: '#181627',
  },
}

$base: #685CDB;
$base-ink: #FFFFFF;
$base-50: #F3F2FD;
$base-100: #E0DDF8;
$base-200: #C1BCF0;
$base-300: #978EE1;
$base-400: #6F64CE;
$base-500: #4D42B3;
$base-600: #413989;
$base-700: #332E61;
$base-800: #242140;
$base-900: #181627;
$base-hover: #3D2DCC;
$base-subtle: #D6D3F0;

{
    "color": {
        "base": {
            "value": "#685CDB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F2FD",
                "type": "color"
            },
            "100": {
                "value": "#E0DDF8",
                "type": "color"
            },
            "200": {
                "value": "#C1BCF0",
                "type": "color"
            },
            "300": {
                "value": "#978EE1",
                "type": "color"
            },
            "400": {
                "value": "#6F64CE",
                "type": "color"
            },
            "500": {
                "value": "#4D42B3",
                "type": "color"
            },
            "600": {
                "value": "#413989",
                "type": "color"
            },
            "700": {
                "value": "#332E61",
                "type": "color"
            },
            "800": {
                "value": "#242140",
                "type": "color"
            },
            "900": {
                "value": "#181627",
                "type": "color"
            }
        }
    }
}