What color is #617BB4?

#617BB4 is a medium blue. In RGB it is rgb(97, 123, 180), and in HSL hsl(221, 36%, 54%).

Is #617BB4 accessible as text?

On white, #617BB4 has a contrast ratio of 4.20:1 (fails WCAG AA for body text); on black it is 5.00:1 (passes). For text placed on #617BB4, use black for the best readability.

What is the closest Tailwind color to #617BB4?

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

What colors go well with #617BB4?

#617BB4 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B4995F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #617BB4 below.

Is #617BB4 good for buttons?

#617BB4 works well for buttons and highlights, but use black text on #617BB4 — white text only reaches 4.20:1, below the 4.5:1 needed for normal-size labels.

Is #617BB4 the same as CSS steelblue?

No — #617BB4 is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#617BB4 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #617BB4

Not just a swatch — here's how #617BB4 works with other colors. Named schemes with #617BB4 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #617BB4 Accent #A5C4C2 Surface #DDDBBF 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 #617BB4 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #87A0D6

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 #617BB4 Secondary #7F4536 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 #617BB4 Surface #F6E5D8 Anchor #5B2144 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 #617BB4 Secondary #9DA7BC 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.

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Color Lab

How #617BB4 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 27/100

Cool

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

Softness 50/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 41/100

Moderate

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 59/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 48/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 25/100

Low

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

UI accent fit 86/100

Very high

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

Surface fit 32/100

Low

Usable as a tinted surface in measured doses.

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #617BB4

For UI

For branding

For interior

For fashion

People also use #617BB4 with

Lagoon Blue Tanzanite Camel Gainsboro Charcoal

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

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 4.4:1. Use

Subtle surface Use #E1E5EE for cards and hover fills. Tint 80

Avoid beside #615FB4 — 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 #617BB4 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: #617BB4;
  --color-base-rgb: 97 123 180;
  --color-base-oklch: oklch(58.7% 0.093 264.9);
  --color-50: #F4F6FA;
  --color-100: #E3E8F2;
  --color-200: #C8D1E5;
  --color-300: #A0AFCF;
  --color-400: #7B8EB7;
  --color-500: #5B6F9A;
  --color-600: #4A5977;
  --color-700: #394256;
  --color-800: #282D39;
  --color-900: #1A1D23;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  glaucous: {
    50: '#F4F6FA',
    100: '#E3E8F2',
    200: '#C8D1E5',
    300: '#A0AFCF',
    400: '#7B8EB7',
    500: '#5B6F9A',
    600: '#4A5977',
    700: '#394256',
    800: '#282D39',
    900: '#1A1D23',
  },
}

$base: #617BB4;
$base-ink: #141310;
$base-50: #F4F6FA;
$base-100: #E3E8F2;
$base-200: #C8D1E5;
$base-300: #A0AFCF;
$base-400: #7B8EB7;
$base-500: #5B6F9A;
$base-600: #4A5977;
$base-700: #394256;
$base-800: #282D39;
$base-900: #1A1D23;
$base-hover: #476096;
$base-subtle: #D2D8E5;

{
    "color": {
        "base": {
            "value": "#617BB4",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F6FA",
                "type": "color"
            },
            "100": {
                "value": "#E3E8F2",
                "type": "color"
            },
            "200": {
                "value": "#C8D1E5",
                "type": "color"
            },
            "300": {
                "value": "#A0AFCF",
                "type": "color"
            },
            "400": {
                "value": "#7B8EB7",
                "type": "color"
            },
            "500": {
                "value": "#5B6F9A",
                "type": "color"
            },
            "600": {
                "value": "#4A5977",
                "type": "color"
            },
            "700": {
                "value": "#394256",
                "type": "color"
            },
            "800": {
                "value": "#282D39",
                "type": "color"
            },
            "900": {
                "value": "#1A1D23",
                "type": "color"
            }
        }
    }
}

Palettes built on #617BB4

Color Lab

Pairs with #617BB4

UI roles & guardrails

In real applications

Scales

Every model

Export