What color is #35489E?

#35489E is a medium blue. In RGB it is rgb(53, 72, 158), and in HSL hsl(229, 50%, 41%).

Is #35489E accessible as text?

On white, #35489E has a contrast ratio of 8.16:1 (passes WCAG AA for body text); on black it is 2.57:1 (fails). For text placed on #35489E, use white for the best readability.

What is the closest Tailwind color to #35489E?

The nearest Tailwind CSS token is blue-900 (#1C398E).

What colors go well with #35489E?

#35489E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #9D8A34. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #35489E below.

Is #35489E good for buttons?

#35489E works well for buttons and highlights, but use white text on #35489E — black text only reaches 2.57:1, below the 4.5:1 needed for normal-size labels.

Is #35489E the same as CSS darkslateblue?

No — #35489E is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#35489E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #35489E

Not just a swatch — here's how #35489E works with other colors. Named schemes with #35489E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #35489E Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Cobalt Blue 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 #35489E Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #576DBD

Cobalt 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 Cobalt Blue.

Vintage Leather Lead · 5 colors

Lead #35489E Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

Cobalt Blue 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 #35489E Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Cobalt Blue 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 #35489E Secondary #6E7897 Support #9D8F88 Ink #18140F

Cobalt 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 Cobalt Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #35489E 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 18/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

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 39/100

Low

A faint retro warmth without tipping into sepia.

Luxury 61/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 38/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 86/100

Very high

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

Surface fit 14/100

Very low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #35489E

For UI

For branding

For interior

For fashion

People also use #35489E with

Bondi Blue Rebecca Purple Dark Goldenrod Gainsboro Gunmetal Gray

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

Body text Passes on white at 16px and above. Pass

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 8.2:1. Use

Subtle surface Use #D6DAEC for cards and hover fills. Tint 80

Avoid beside #44349D — 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 #35489E 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: #35489E;
  --color-base-rgb: 53 72 158;
  --color-base-oklch: oklch(43.6% 0.141 270.2);
  --color-50: #F3F5FC;
  --color-100: #E0E4F5;
  --color-200: #C2C9EB;
  --color-300: #97A3D8;
  --color-400: #707FC2;
  --color-500: #4E5FA6;
  --color-600: #424D80;
  --color-700: #333B5C;
  --color-800: #24293C;
  --color-900: #181A25;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cobalt-blue: {
    50: '#F3F5FC',
    100: '#E0E4F5',
    200: '#C2C9EB',
    300: '#97A3D8',
    400: '#707FC2',
    500: '#4E5FA6',
    600: '#424D80',
    700: '#333B5C',
    800: '#24293C',
    900: '#181A25',
  },
}

$base: #35489E;
$base-ink: #FFFFFF;
$base-50: #F3F5FC;
$base-100: #E0E4F5;
$base-200: #C2C9EB;
$base-300: #97A3D8;
$base-400: #707FC2;
$base-500: #4E5FA6;
$base-600: #424D80;
$base-700: #333B5C;
$base-800: #24293C;
$base-900: #181A25;
$base-hover: #2A397D;
$base-subtle: #C1C7E3;

{
    "color": {
        "base": {
            "value": "#35489E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F5FC",
                "type": "color"
            },
            "100": {
                "value": "#E0E4F5",
                "type": "color"
            },
            "200": {
                "value": "#C2C9EB",
                "type": "color"
            },
            "300": {
                "value": "#97A3D8",
                "type": "color"
            },
            "400": {
                "value": "#707FC2",
                "type": "color"
            },
            "500": {
                "value": "#4E5FA6",
                "type": "color"
            },
            "600": {
                "value": "#424D80",
                "type": "color"
            },
            "700": {
                "value": "#333B5C",
                "type": "color"
            },
            "800": {
                "value": "#24293C",
                "type": "color"
            },
            "900": {
                "value": "#181A25",
                "type": "color"
            }
        }
    }
}