What color is #5975C9?

#5975C9 is a medium blue. In RGB it is rgb(89, 117, 201), and in HSL hsl(225, 51%, 57%).

Is #5975C9 accessible as text?

On white, #5975C9 has a contrast ratio of 4.36:1 (fails WCAG AA for body text); on black it is 4.81:1 (passes). For text placed on #5975C9, use black for the best readability.

What is the closest Tailwind color to #5975C9?

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

What colors go well with #5975C9?

#5975C9 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C9AD59. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #5975C9 below.

Is #5975C9 good for buttons?

#5975C9 works well for buttons and highlights, but use black text on #5975C9 — white text only reaches 4.36:1, below the 4.5:1 needed for normal-size labels.

Is #5975C9 the same as CSS steelblue?

No — #5975C9 is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#5975C9 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #5975C9

Not just a swatch — here's how #5975C9 works with other colors. Named schemes with #5975C9 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #5975C9 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 #5975C9 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #7F9BE9

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 #5975C9 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 #5975C9 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 #5975C9 Secondary #98A4C3 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 #5975C9 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 19/100

Cool

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

Softness 45/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 43/100

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 47/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 36/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 95/100

Very high

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

Surface fit 20/100

Very low

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

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #5975C9

For UI

For branding

For interior

For fashion

People also use #5975C9 with

Lagoon Blue Slate Blue Dark Khaki 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 white text at 4.4:1. Use

Subtle surface Use #E1E5F1 for cards and hover fills. Tint 80

Avoid beside #6359C9 — 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 #5975C9 at work across the surfaces designers actually ship.

Website / UI

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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: #5975C9;
  --color-base-rgb: 89 117 201;
  --color-base-oklch: oklch(58.1% 0.133 268.2);
  --color-50: #F3F5FC;
  --color-100: #E0E5F6;
  --color-200: #C1CCEB;
  --color-300: #97A7D9;
  --color-400: #6F84C3;
  --color-500: #4E64A7;
  --color-600: #415181;
  --color-700: #333D5C;
  --color-800: #242A3D;
  --color-900: #181B26;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  glaucous: {
    50: '#F3F5FC',
    100: '#E0E5F6',
    200: '#C1CCEB',
    300: '#97A7D9',
    400: '#6F84C3',
    500: '#4E64A7',
    600: '#415181',
    700: '#333D5C',
    800: '#242A3D',
    900: '#181B26',
  },
}

$base: #5975C9;
$base-ink: #141310;
$base-50: #F3F5FC;
$base-100: #E0E5F6;
$base-200: #C1CCEB;
$base-300: #97A7D9;
$base-400: #6F84C3;
$base-500: #4E64A7;
$base-600: #415181;
$base-700: #333D5C;
$base-800: #242A3D;
$base-900: #181B26;
$base-hover: #3957B0;
$base-subtle: #D1D8EB;

{
    "color": {
        "base": {
            "value": "#5975C9",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F5FC",
                "type": "color"
            },
            "100": {
                "value": "#E0E5F6",
                "type": "color"
            },
            "200": {
                "value": "#C1CCEB",
                "type": "color"
            },
            "300": {
                "value": "#97A7D9",
                "type": "color"
            },
            "400": {
                "value": "#6F84C3",
                "type": "color"
            },
            "500": {
                "value": "#4E64A7",
                "type": "color"
            },
            "600": {
                "value": "#415181",
                "type": "color"
            },
            "700": {
                "value": "#333D5C",
                "type": "color"
            },
            "800": {
                "value": "#242A3D",
                "type": "color"
            },
            "900": {
                "value": "#181B26",
                "type": "color"
            }
        }
    }
}

Palettes built on #5975C9

Color Lab

Pairs with #5975C9

UI roles & guardrails

In real applications

Scales

Every model

Export