What color is #657FC3?

#657FC3 is a medium blue. In RGB it is rgb(101, 127, 195), and in HSL hsl(223, 44%, 58%).

Is #657FC3 accessible as text?

On white, #657FC3 has a contrast ratio of 3.91:1 (fails WCAG AA for body text); on black it is 5.38:1 (passes). For text placed on #657FC3, use black for the best readability.

What is the closest Tailwind color to #657FC3?

The nearest Tailwind CSS token is sky-600 (#0084D1).

What colors go well with #657FC3?

#657FC3 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C3A865. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #657FC3 below.

Is #657FC3 good for buttons?

#657FC3 works well for buttons and highlights, but use black text on #657FC3 — white text only reaches 3.91:1, below the 4.5:1 needed for normal-size labels.

Is #657FC3 the same as CSS steelblue?

No — #657FC3 is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#657FC3 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #657FC3

Not just a swatch — here's how #657FC3 works with other colors. Named schemes with #657FC3 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #657FC3 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

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

Tech Product Signal · 5 colors

Signal #657FC3 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #8BA5E4

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

Vintage Leather Lead · 5 colors

Lead #657FC3 Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #58223A

Glaucous plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Berry & Cream Lead · 5 colors

Lead #657FC3 Surface #F6E5D8 Anchor #5B2143 Accent #E5C2CA Secondary #322B2F

Glaucous 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 #657FC3 Secondary #A2ACC5 Support #9D8F88 Ink #18140F

Glaucous 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 Glaucous carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #657FC3 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 24/100

Cool

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

Softness 50/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 39/100

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 53/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 29/100

Low

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

UI accent fit 87/100

Very high

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

Surface fit 30/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #657FC3

For UI

For branding

For interior

For fashion

People also use #657FC3 with

Sky Blue Amethyst Sand 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 4.8:1. Use

Subtle surface Use #E3E7F0 for cards and hover fills. Tint 80

Avoid beside #6965C3 — 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 #657FC3 at work across the surfaces designers actually ship.

Website / UI

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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: #657FC3;
  --color-base-rgb: 101 127 195;
  --color-base-oklch: oklch(60.6% 0.108 267.3);
  --color-50: #F4F6FB;
  --color-100: #E1E6F4;
  --color-200: #C4CEE8;
  --color-300: #9BABD4;
  --color-400: #7589BD;
  --color-500: #546AA1;
  --color-600: #46557C;
  --color-700: #364059;
  --color-800: #262C3B;
  --color-900: #191C25;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  glaucous: {
    50: '#F4F6FB',
    100: '#E1E6F4',
    200: '#C4CEE8',
    300: '#9BABD4',
    400: '#7589BD',
    500: '#546AA1',
    600: '#46557C',
    700: '#364059',
    800: '#262C3B',
    900: '#191C25',
  },
}

$base: #657FC3;
$base-ink: #141310;
$base-50: #F4F6FB;
$base-100: #E1E6F4;
$base-200: #C4CEE8;
$base-300: #9BABD4;
$base-400: #7589BD;
$base-500: #546AA1;
$base-600: #46557C;
$base-700: #364059;
$base-800: #262C3B;
$base-900: #191C25;
$base-hover: #4260AA;
$base-subtle: #D4DAEA;

{
    "color": {
        "base": {
            "value": "#657FC3",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F6FB",
                "type": "color"
            },
            "100": {
                "value": "#E1E6F4",
                "type": "color"
            },
            "200": {
                "value": "#C4CEE8",
                "type": "color"
            },
            "300": {
                "value": "#9BABD4",
                "type": "color"
            },
            "400": {
                "value": "#7589BD",
                "type": "color"
            },
            "500": {
                "value": "#546AA1",
                "type": "color"
            },
            "600": {
                "value": "#46557C",
                "type": "color"
            },
            "700": {
                "value": "#364059",
                "type": "color"
            },
            "800": {
                "value": "#262C3B",
                "type": "color"
            },
            "900": {
                "value": "#191C25",
                "type": "color"
            }
        }
    }
}

Palettes built on #657FC3

Color Lab

Pairs with #657FC3

UI roles & guardrails

In real applications

Scales

Every model

Export