What color is #858CBB?

#858CBB is a light, muted blue-violet. In RGB it is rgb(133, 140, 187), and in HSL hsl(232, 28%, 63%).

Is #858CBB accessible as text?

On white, #858CBB has a contrast ratio of 3.25:1 (fails WCAG AA for body text); on black it is 6.47:1 (passes). For text placed on #858CBB, use black for the best readability.

What is the closest Tailwind color to #858CBB?

The nearest Tailwind CSS token is mauve-400 (#A89EA9).

What colors go well with #858CBB?

#858CBB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BBB486. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #858CBB below.

Is #858CBB good for buttons?

#858CBB works well for buttons and highlights, but use black text on #858CBB — white text only reaches 3.25:1, below the 4.5:1 needed for normal-size labels.

Is #858CBB the same as CSS lightslategray?

No — #858CBB is not the CSS named color lightslategray, but lightslategray (#778899) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#858CBB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #858CBB

Not just a swatch — here's how #858CBB works with other colors. Named schemes with #858CBB in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #858CBB Secondary #AEB4B8 Surface #F1F2F0 Support #7E92A7 Anchor #2E3236

Cool Gray keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Japanese Sand Base · 5 colors

Base #858CBB Surface #F2E8DD Highlight #F8F0E7 Secondary #BEADA2 Ink #2C2724

Cool Gray sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Coastal Morning Lead · 5 colors

Lead #858CBB Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #858CBB Secondary #B7BACB Support #9D9088 Ink #18140F

Cool Gray 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 Cool Gray carrying the quiet middle.

Tech Product Signal · 5 colors

Signal #858CBB Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #ABB2DE

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

Build a working theme in the generator →

Color Lab

How #858CBB 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 36/100

Cool

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

Softness 58/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 34/100

Low

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 51/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 41/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 27/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 63/100

High

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

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #858CBB

For UI

For branding

For interior

For fashion

People also use #858CBB with

Ash Gray Cool Gray Sand Gainsboro Gunmetal Gray

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 5.7:1. Use

Subtle surface Use #E8E9F0 for cards and hover fills. Tint 80

Avoid beside #9186BB — 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 #858CBB 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: #858CBB;
  --color-base-rgb: 133 140 187;
  --color-base-oklch: oklch(65.2% 0.071 277.7);
  --color-50: #F5F6FA;
  --color-100: #E5E6F1;
  --color-200: #CBCEE2;
  --color-300: #A6AACA;
  --color-400: #8288B0;
  --color-500: #626893;
  --color-600: #4F5472;
  --color-700: #3C3F53;
  --color-800: #2A2C37;
  --color-900: #1B1C22;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cool-gray: {
    50: '#F5F6FA',
    100: '#E5E6F1',
    200: '#CBCEE2',
    300: '#A6AACA',
    400: '#8288B0',
    500: '#626893',
    600: '#4F5472',
    700: '#3C3F53',
    800: '#2A2C37',
    900: '#1B1C22',
  },
}

$base: #858CBB;
$base-ink: #141310;
$base-50: #F5F6FA;
$base-100: #E5E6F1;
$base-200: #CBCEE2;
$base-300: #A6AACA;
$base-400: #8288B0;
$base-500: #626893;
$base-600: #4F5472;
$base-700: #3C3F53;
$base-800: #2A2C37;
$base-900: #1B1C22;
$base-hover: #5D67A4;
$base-subtle: #DDDEE9;

{
    "color": {
        "base": {
            "value": "#858CBB",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F6FA",
                "type": "color"
            },
            "100": {
                "value": "#E5E6F1",
                "type": "color"
            },
            "200": {
                "value": "#CBCEE2",
                "type": "color"
            },
            "300": {
                "value": "#A6AACA",
                "type": "color"
            },
            "400": {
                "value": "#8288B0",
                "type": "color"
            },
            "500": {
                "value": "#626893",
                "type": "color"
            },
            "600": {
                "value": "#4F5472",
                "type": "color"
            },
            "700": {
                "value": "#3C3F53",
                "type": "color"
            },
            "800": {
                "value": "#2A2C37",
                "type": "color"
            },
            "900": {
                "value": "#1B1C22",
                "type": "color"
            }
        }
    }
}

Palettes built on #858CBB

Color Lab

Pairs with #858CBB

UI roles & guardrails

In real applications

Scales

Every model

Export