What color is #170C63?

#170C63 is a dark, vivid indigo. In RGB it is rgb(23, 12, 99), and in HSL hsl(248, 78%, 22%).

Is #170C63 accessible as text?

On white, #170C63 has a contrast ratio of 16.55:1 (passes WCAG AA for body text); on black it is 1.27:1 (fails). For text placed on #170C63, use white for the best readability.

What is the closest Tailwind color to #170C63?

The nearest Tailwind CSS token is violet-950 (#2F0D68).

What colors go well with #170C63?

#170C63 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #58640C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #170C63 below.

Is #170C63 good for buttons?

#170C63 works well for buttons and highlights, but use white text on #170C63 — black text only reaches 1.27:1, below the 4.5:1 needed for normal-size labels.

Is #170C63 the same as CSS midnightblue?

No — #170C63 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#170C63 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #170C63

Not just a swatch — here's how #170C63 works with other colors. Named schemes with #170C63 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #170C63 Anchor #141210 Accent #DC9659 Secondary #262833 Surface #F3ECE3

Midnight Blue 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 #170C63 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #0D002A

Midnight Blue 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 Midnight Blue.

Coastal Morning Lead · 5 colors

Lead #170C63 Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #21344A

Midnight Blue 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 #170C63 Secondary #7F4534 Surface #EED7C2 Accent #365247 Anchor #582239

Midnight 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #170C63 Secondary #3E4460 Support #9D9088 Ink #18140F

Midnight 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 Midnight Blue carrying the quiet middle.

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Color Lab

How #170C63 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 21/100

Cool

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

Softness 21/100

Low

Firm and assertive — carries weight and contrast.

Depth 77/100

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 76/100

High

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

Brand distinctiveness 54/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 27/100

Low

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

Surface fit 26/100

Low

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

Print safety 78/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #170C63

For UI

For branding

For interior

For fashion

People also use #170C63 with

Classic Blue Indigo Dark Olive Green Gainsboro Prussian Blue

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 16.5:1. Use

Subtle surface Use #C7C1EE for cards and hover fills. Tint 80

Avoid beside #350C64 — 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 #170C63 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: #170C63;
  --color-base-rgb: 23 12 99;
  --color-base-oklch: oklch(25.3% 0.140 275.4);
  --color-50: #F3F1FE;
  --color-100: #DEDAFB;
  --color-200: #BFB6F6;
  --color-300: #9385EA;
  --color-400: #6A58DA;
  --color-500: #4836BF;
  --color-600: #3D3091;
  --color-700: #302867;
  --color-800: #231E43;
  --color-900: #171429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  midnight-blue: {
    50: '#F3F1FE',
    100: '#DEDAFB',
    200: '#BFB6F6',
    300: '#9385EA',
    400: '#6A58DA',
    500: '#4836BF',
    600: '#3D3091',
    700: '#302867',
    800: '#231E43',
    900: '#171429',
  },
}

$base: #170C63;
$base-ink: #FFFFFF;
$base-50: #F3F1FE;
$base-100: #DEDAFB;
$base-200: #BFB6F6;
$base-300: #9385EA;
$base-400: #6A58DA;
$base-500: #4836BF;
$base-600: #3D3091;
$base-700: #302867;
$base-800: #231E43;
$base-900: #171429;
$base-hover: #130A50;
$base-subtle: #A9A0E7;

{
    "color": {
        "base": {
            "value": "#170C63",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F1FE",
                "type": "color"
            },
            "100": {
                "value": "#DEDAFB",
                "type": "color"
            },
            "200": {
                "value": "#BFB6F6",
                "type": "color"
            },
            "300": {
                "value": "#9385EA",
                "type": "color"
            },
            "400": {
                "value": "#6A58DA",
                "type": "color"
            },
            "500": {
                "value": "#4836BF",
                "type": "color"
            },
            "600": {
                "value": "#3D3091",
                "type": "color"
            },
            "700": {
                "value": "#302867",
                "type": "color"
            },
            "800": {
                "value": "#231E43",
                "type": "color"
            },
            "900": {
                "value": "#171429",
                "type": "color"
            }
        }
    }
}

Palettes built on #170C63

Color Lab

Pairs with #170C63

UI roles & guardrails

In real applications

Scales

Every model

Export