What color is #170355?

#170355 is a very dark, vivid indigo. In RGB it is rgb(23, 3, 85), and in HSL hsl(255, 93%, 17%).

Is #170355 accessible as text?

On white, #170355 has a contrast ratio of 17.79:1 (passes WCAG AA for body text); on black it is 1.18:1 (fails). For text placed on #170355, use white for the best readability.

What is the closest Tailwind color to #170355?

The nearest Tailwind CSS token is indigo-950 (#1E1A4D).

What colors go well with #170355?

#170355 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #405403. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #170355 below.

Is #170355 good for buttons?

#170355 works well for buttons and highlights, but use white text on #170355 — black text only reaches 1.18:1, below the 4.5:1 needed for normal-size labels.

Is #170355 the same as CSS midnightblue?

No — #170355 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#170355 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #170355

Not just a swatch — here's how #170355 works with other colors. Named schemes with #170355 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #170355 Anchor #141210 Accent #DB9758 Secondary #272833 Surface #F3ECE3

Navy carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Moody Editorial Color · 5 colors

Color #170355 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #09001F

Navy adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Navy.

Coastal Morning Lead · 5 colors

Lead #170355 Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

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

Vintage Leather Lead · 5 colors

Lead #170355 Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582238

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #170355 Secondary #393C56 Support #9D9088 Ink #18140F

Navy 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 Navy carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #170355 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 25/100

Cool

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

Softness 19/100

Very low

Firm and assertive — carries weight and contrast.

Depth 79/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 80/100

High

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

Brand distinctiveness 50/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 20/100

Very low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 31/100

Low

Usable as a tinted surface in measured doses.

Print safety 80/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #170355

For UI

For branding

For interior

For fashion

People also use #170355 with

Yale Blue Russian Violet Army Green Gainsboro

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 17.8:1. Use

Subtle surface Use #C6B8F1 for cards and hover fills. Tint 80

Avoid beside #320354 — 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 #170355 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: #170355;
  --color-base-rgb: 23 3 85;
  --color-base-oklch: oklch(22.4% 0.130 279.9);
  --color-50: #F4F0FE;
  --color-100: #E1D8FD;
  --color-200: #C3B1FC;
  --color-300: #9A7CF4;
  --color-400: #734CE6;
  --color-500: #5129CC;
  --color-600: #44279B;
  --color-700: #35226D;
  --color-800: #251A47;
  --color-900: #18122B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F4F0FE',
    100: '#E1D8FD',
    200: '#C3B1FC',
    300: '#9A7CF4',
    400: '#734CE6',
    500: '#5129CC',
    600: '#44279B',
    700: '#35226D',
    800: '#251A47',
    900: '#18122B',
  },
}

$base: #170355;
$base-ink: #FFFFFF;
$base-50: #F4F0FE;
$base-100: #E1D8FD;
$base-200: #C3B1FC;
$base-300: #9A7CF4;
$base-400: #734CE6;
$base-500: #5129CC;
$base-600: #44279B;
$base-700: #35226D;
$base-800: #251A47;
$base-900: #18122B;
$base-hover: #130243;
$base-subtle: #A993EC;

{
    "color": {
        "base": {
            "value": "#170355",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F0FE",
                "type": "color"
            },
            "100": {
                "value": "#E1D8FD",
                "type": "color"
            },
            "200": {
                "value": "#C3B1FC",
                "type": "color"
            },
            "300": {
                "value": "#9A7CF4",
                "type": "color"
            },
            "400": {
                "value": "#734CE6",
                "type": "color"
            },
            "500": {
                "value": "#5129CC",
                "type": "color"
            },
            "600": {
                "value": "#44279B",
                "type": "color"
            },
            "700": {
                "value": "#35226D",
                "type": "color"
            },
            "800": {
                "value": "#251A47",
                "type": "color"
            },
            "900": {
                "value": "#18122B",
                "type": "color"
            }
        }
    }
}

Palettes built on #170355

Color Lab

Pairs with #170355

UI roles & guardrails

In real applications

Scales

Every model

Export