What color is #617FBB?

#617FBB is a medium blue. In RGB it is rgb(97, 127, 187), and in HSL hsl(220, 40%, 56%).

Is #617FBB accessible as text?

On white, #617FBB has a contrast ratio of 3.99:1 (fails WCAG AA for body text); on black it is 5.26:1 (passes). For text placed on #617FBB, use black for the best readability.

What is the closest Tailwind color to #617FBB?

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

What colors go well with #617FBB?

#617FBB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BC9E62. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #617FBB below.

Is #617FBB good for buttons?

#617FBB works well for buttons and highlights, but use black text on #617FBB — white text only reaches 3.99:1, below the 4.5:1 needed for normal-size labels.

Is #617FBB the same as CSS steelblue?

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

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

Palettes built on #617FBB

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

Coastal Morning Lead · 5 colors

Lead #617FBB Accent #A5C4C1 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 #617FBB Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #87A4DC

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 #617FBB Secondary #7F4536 Surface #EED7C2 Accent #375246 Anchor #57223A

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 #617FBB Surface #F6E5D8 Anchor #5B2144 Accent #E4C2CA 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 #617FBB Secondary #9FABC1 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 #617FBB 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 26/100

Cool

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

Softness 50/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 40/100

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 56/100

Moderate

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

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 27/100

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 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #617FBB

For UI

For branding

For interior

For fashion

People also use #617FBB with

Lagoon Blue Very Peri 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 4.7:1. Use

Subtle surface Use #E2E6EF for cards and hover fills. Tint 80

Avoid beside #6262BC — 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 #617FBB 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: #617FBB;
  --color-base-rgb: 97 127 187;
  --color-base-oklch: oklch(59.9% 0.098 263.4);
  --color-50: #F4F6FB;
  --color-100: #E2E8F3;
  --color-200: #C6D1E6;
  --color-300: #9EAFD1;
  --color-400: #788EBA;
  --color-500: #576F9E;
  --color-600: #48597A;
  --color-700: #374258;
  --color-800: #272D3A;
  --color-900: #191D24;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  glaucous: {
    50: '#F4F6FB',
    100: '#E2E8F3',
    200: '#C6D1E6',
    300: '#9EAFD1',
    400: '#788EBA',
    500: '#576F9E',
    600: '#48597A',
    700: '#374258',
    800: '#272D3A',
    900: '#191D24',
  },
}

$base: #617FBB;
$base-ink: #141310;
$base-50: #F4F6FB;
$base-100: #E2E8F3;
$base-200: #C6D1E6;
$base-300: #9EAFD1;
$base-400: #788EBA;
$base-500: #576F9E;
$base-600: #48597A;
$base-700: #374258;
$base-800: #272D3A;
$base-900: #191D24;
$base-hover: #4563A0;
$base-subtle: #D3DAE8;

{
    "color": {
        "base": {
            "value": "#617FBB",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F6FB",
                "type": "color"
            },
            "100": {
                "value": "#E2E8F3",
                "type": "color"
            },
            "200": {
                "value": "#C6D1E6",
                "type": "color"
            },
            "300": {
                "value": "#9EAFD1",
                "type": "color"
            },
            "400": {
                "value": "#788EBA",
                "type": "color"
            },
            "500": {
                "value": "#576F9E",
                "type": "color"
            },
            "600": {
                "value": "#48597A",
                "type": "color"
            },
            "700": {
                "value": "#374258",
                "type": "color"
            },
            "800": {
                "value": "#272D3A",
                "type": "color"
            },
            "900": {
                "value": "#191D24",
                "type": "color"
            }
        }
    }
}

Palettes built on #617FBB

Color Lab

Pairs with #617FBB

UI roles & guardrails

In real applications

Scales

Every model

Export