What color is #688FA0?

#688FA0 is a medium, muted cyan-blue. In RGB it is rgb(104, 143, 160), and in HSL hsl(198, 23%, 52%).

Is #688FA0 accessible as text?

On white, #688FA0 has a contrast ratio of 3.49:1 (fails WCAG AA for body text); on black it is 6.03:1 (passes). For text placed on #688FA0, use black for the best readability.

What is the closest Tailwind color to #688FA0?

The nearest Tailwind CSS token is cyan-600 (#0092B8).

What colors go well with #688FA0?

#688FA0 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A17968. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #688FA0 below.

Is #688FA0 good for buttons?

#688FA0 works well for buttons and highlights, but use black text on #688FA0 — white text only reaches 3.49:1, below the 4.5:1 needed for normal-size labels.

Is #688FA0 the same as CSS lightslategray?

No — #688FA0 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.

#688FA0 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #688FA0

Not just a swatch — here's how #688FA0 works with other colors. Named schemes with #688FA0 in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #688FA0 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 Anchor #2E3236

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

Coastal Morning Lead · 5 colors

Lead #688FA0 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1E344A

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

Japanese Sand Base · 5 colors

Base #688FA0 Surface #ECEADC Highlight #F4F2E7 Secondary #B3B19F Ink #2A2723

Light Slate 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.

Tech Product Signal · 5 colors

Signal #688FA0 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #90B4C3

Light Slate 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 Light Slate Gray.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #688FA0 Secondary #A8B6BC Support #969386 Ink #16140F

Light Slate 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 Light Slate Gray carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #688FA0 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 35/100

Cool

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

Softness 59/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 36/100

Low

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

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 42/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 42/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 19/100

Very low

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

UI accent fit 61/100

High

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

Surface fit 49/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #688FA0

For UI

For branding

For interior

For fashion

People also use #688FA0 with

Sage Very Peri Mocha Platinum Charcoal

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 5.3:1. Use

Subtle surface Use #E2E8EB for cards and hover fills. Tint 80

Avoid beside #687DA1 — 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 #688FA0 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: #688FA0;
  --color-base-rgb: 104 143 160;
  --color-base-oklch: oklch(62.7% 0.050 226.7);
  --color-50: #F5F8F9;
  --color-100: #E6EDF0;
  --color-200: #CDDAE0;
  --color-300: #A9BEC6;
  --color-400: #86A1AC;
  --color-500: #66828F;
  --color-600: #53676F;
  --color-700: #3E4B51;
  --color-800: #2B3336;
  --color-900: #1B2022;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  light-slate-gray: {
    50: '#F5F8F9',
    100: '#E6EDF0',
    200: '#CDDAE0',
    300: '#A9BEC6',
    400: '#86A1AC',
    500: '#66828F',
    600: '#53676F',
    700: '#3E4B51',
    800: '#2B3336',
    900: '#1B2022',
  },
}

$base: #688FA0;
$base-ink: #141310;
$base-50: #F5F8F9;
$base-100: #E6EDF0;
$base-200: #CDDAE0;
$base-300: #A9BEC6;
$base-400: #86A1AC;
$base-500: #66828F;
$base-600: #53676F;
$base-700: #3E4B51;
$base-800: #2B3336;
$base-900: #1B2022;
$base-hover: #527482;
$base-subtle: #D4DDE1;

{
    "color": {
        "base": {
            "value": "#688FA0",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F8F9",
                "type": "color"
            },
            "100": {
                "value": "#E6EDF0",
                "type": "color"
            },
            "200": {
                "value": "#CDDAE0",
                "type": "color"
            },
            "300": {
                "value": "#A9BEC6",
                "type": "color"
            },
            "400": {
                "value": "#86A1AC",
                "type": "color"
            },
            "500": {
                "value": "#66828F",
                "type": "color"
            },
            "600": {
                "value": "#53676F",
                "type": "color"
            },
            "700": {
                "value": "#3E4B51",
                "type": "color"
            },
            "800": {
                "value": "#2B3336",
                "type": "color"
            },
            "900": {
                "value": "#1B2022",
                "type": "color"
            }
        }
    }
}

Palettes built on #688FA0

Color Lab

Pairs with #688FA0

UI roles & guardrails

In real applications

Scales

Every model

Export