What color is #688FC5?

#688FC5 is a medium blue. In RGB it is rgb(104, 143, 197), and in HSL hsl(215, 44%, 59%).

Is #688FC5 accessible as text?

On white, #688FC5 has a contrast ratio of 3.32:1 (fails WCAG AA for body text); on black it is 6.32:1 (passes). For text placed on #688FC5, use black for the best readability.

What is the closest Tailwind color to #688FC5?

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

What colors go well with #688FC5?

#688FC5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C49E68. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #688FC5 below.

Is #688FC5 good for buttons?

#688FC5 works well for buttons and highlights, but use black text on #688FC5 — white text only reaches 3.32:1, below the 4.5:1 needed for normal-size labels.

Is #688FC5 the same as CSS steelblue?

No — #688FC5 is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#688FC5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #688FC5

Not just a swatch — here's how #688FC5 works with other colors. Named schemes with #688FC5 in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #688FC5 Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 Anchor #2E3236

Ocean Blue 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 #688FC5 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Ocean Blue 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 #688FC5 Surface #EBEADC Highlight #F4F2E7 Secondary #B2B2A0 Ink #2C2724

Ocean Blue 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 #688FC5 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #90B4E7

Ocean 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 Ocean Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #688FC5 Secondary #ABBACE Support #9D8F89 Ink #16140F

Ocean 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 Ocean Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #688FC5 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 25/100

Cool

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

Softness 55/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 35/100

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 52/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 43/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 36/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 73/100

High

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

Surface fit 38/100

Low

Usable as a tinted surface in measured doses.

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #688FC5

For UI

For branding

For interior

For fashion

People also use #688FC5 with

Sky Blue Slate Blue Camel Gainsboro 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 5.6:1. Use

Subtle surface Use #E3E9F1 for cards and hover fills. Tint 80

Avoid beside #6870C4 — 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 #688FC5 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: #688FC5;
  --color-base-rgb: 104 143 197;
  --color-base-oklch: oklch(64.3% 0.092 256.7);
  --color-50: #F4F7FB;
  --color-100: #E1E9F4;
  --color-200: #C4D3E8;
  --color-300: #9BB3D4;
  --color-400: #7593BD;
  --color-500: #5474A1;
  --color-600: #465C7C;
  --color-700: #364459;
  --color-800: #262F3B;
  --color-900: #191E25;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  ocean-blue: {
    50: '#F4F7FB',
    100: '#E1E9F4',
    200: '#C4D3E8',
    300: '#9BB3D4',
    400: '#7593BD',
    500: '#5474A1',
    600: '#465C7C',
    700: '#364459',
    800: '#262F3B',
    900: '#191E25',
  },
}

$base: #688FC5;
$base-ink: #141310;
$base-50: #F4F7FB;
$base-100: #E1E9F4;
$base-200: #C4D3E8;
$base-300: #9BB3D4;
$base-400: #7593BD;
$base-500: #5474A1;
$base-600: #465C7C;
$base-700: #364459;
$base-800: #262F3B;
$base-900: #191E25;
$base-hover: #4370AD;
$base-subtle: #D5DEEA;

{
    "color": {
        "base": {
            "value": "#688FC5",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F7FB",
                "type": "color"
            },
            "100": {
                "value": "#E1E9F4",
                "type": "color"
            },
            "200": {
                "value": "#C4D3E8",
                "type": "color"
            },
            "300": {
                "value": "#9BB3D4",
                "type": "color"
            },
            "400": {
                "value": "#7593BD",
                "type": "color"
            },
            "500": {
                "value": "#5474A1",
                "type": "color"
            },
            "600": {
                "value": "#465C7C",
                "type": "color"
            },
            "700": {
                "value": "#364459",
                "type": "color"
            },
            "800": {
                "value": "#262F3B",
                "type": "color"
            },
            "900": {
                "value": "#191E25",
                "type": "color"
            }
        }
    }
}

Palettes built on #688FC5

Color Lab

Pairs with #688FC5

UI roles & guardrails

In real applications

Scales

Every model

Export