What color is #999BBC?

#999BBC is a light, muted blue-violet. In RGB it is rgb(153, 155, 188), and in HSL hsl(237, 21%, 67%).

Is #999BBC accessible as text?

On white, #999BBC has a contrast ratio of 2.70:1 (fails WCAG AA for body text); on black it is 7.77:1 (passes). For text placed on #999BBC, use black for the best readability.

What is the closest Tailwind color to #999BBC?

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

What colors go well with #999BBC?

#999BBC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BDBB99. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #999BBC below.

Is #999BBC good for buttons?

#999BBC works well for buttons and highlights, but use black text on #999BBC — white text only reaches 2.70:1, below the 4.5:1 needed for normal-size labels.

Is #999BBC the same as CSS darkgray?

No — #999BBC is not the CSS named color darkgray, but darkgray (#A9A9A9) 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.

#999BBC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #999BBC

Not just a swatch — here's how #999BBC works with other colors. Named schemes with #999BBC in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #999BBC Secondary #AEB4B8 Surface #F1F2F0 Support #7E92A7 Anchor #2E3236

Cadet Grey 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 #999BBC Surface #F2E8DD Highlight #F8F0E7 Secondary #BEADA2 Ink #2C2724

Cadet Grey 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 #999BBC Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

Cadet Grey 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 #999BBC Secondary #C8C9D5 Support #9D9088 Ink #18140F

Cadet Grey 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 Cadet Grey carrying the quiet middle.

Tech Product Signal · 5 colors

Signal #999BBC Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #BFC1E0

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

Build a working theme in the generator →

Color Lab

How #999BBC 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 41/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 65/100

High

Soft and easy on the eye — gentle backdrops, calm surfaces.

Depth 29/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 35/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 19/100

Very low

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

UI accent fit 43/100

Moderate

Workable accent with care around contrast.

Surface fit 57/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 93/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #999BBC

For UI

For branding

For interior

For fashion

People also use #999BBC with

Light Steel Blue Cadet Grey Laurel Green Gainsboro Onyx

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 Only on dark surfaces. Avoid

Background Pair with #141310 text at 6.9:1. Use

Subtle surface Use #ECECF1 for cards and hover fills. Tint 80

Avoid beside #A399BD — 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 #999BBC 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: #999BBC;
  --color-base-rgb: 153 155 188;
  --color-base-oklch: oklch(69.9% 0.048 282.3);
  --color-50: #F6F6F9;
  --color-100: #E6E7EF;
  --color-200: #CECFDF;
  --color-300: #AAABC5;
  --color-400: #8889AA;
  --color-500: #686A8D;
  --color-600: #54556E;
  --color-700: #3F4050;
  --color-800: #2B2C35;
  --color-900: #1C1C21;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cadet-grey: {
    50: '#F6F6F9',
    100: '#E6E7EF',
    200: '#CECFDF',
    300: '#AAABC5',
    400: '#8889AA',
    500: '#686A8D',
    600: '#54556E',
    700: '#3F4050',
    800: '#2B2C35',
    900: '#1C1C21',
  },
}

$base: #999BBC;
$base-ink: #141310;
$base-50: #F6F6F9;
$base-100: #E6E7EF;
$base-200: #CECFDF;
$base-300: #AAABC5;
$base-400: #8889AA;
$base-500: #686A8D;
$base-600: #54556E;
$base-700: #3F4050;
$base-800: #2B2C35;
$base-900: #1C1C21;
$base-hover: #7072A2;
$base-subtle: #E2E2EA;

{
    "color": {
        "base": {
            "value": "#999BBC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F6F9",
                "type": "color"
            },
            "100": {
                "value": "#E6E7EF",
                "type": "color"
            },
            "200": {
                "value": "#CECFDF",
                "type": "color"
            },
            "300": {
                "value": "#AAABC5",
                "type": "color"
            },
            "400": {
                "value": "#8889AA",
                "type": "color"
            },
            "500": {
                "value": "#686A8D",
                "type": "color"
            },
            "600": {
                "value": "#54556E",
                "type": "color"
            },
            "700": {
                "value": "#3F4050",
                "type": "color"
            },
            "800": {
                "value": "#2B2C35",
                "type": "color"
            },
            "900": {
                "value": "#1C1C21",
                "type": "color"
            }
        }
    }
}

Palettes built on #999BBC

Color Lab

Pairs with #999BBC

UI roles & guardrails

In real applications

Scales

Every model

Export