What color is #290C8F?

#290C8F is a dark, vivid indigo. In RGB it is rgb(41, 12, 143), and in HSL hsl(253, 85%, 30%).

Is #290C8F accessible as text?

On white, #290C8F has a contrast ratio of 13.61:1 (passes WCAG AA for body text); on black it is 1.54:1 (fails). For text placed on #290C8F, use white for the best readability.

What is the closest Tailwind color to #290C8F?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #290C8F?

#290C8F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #718E0B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #290C8F below.

Is #290C8F good for buttons?

#290C8F works well for buttons and highlights, but use white text on #290C8F — black text only reaches 1.54:1, below the 4.5:1 needed for normal-size labels.

Is #290C8F the same as CSS midnightblue?

No — #290C8F is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#290C8F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #290C8F

Not just a swatch — here's how #290C8F works with other colors. Named schemes with #290C8F in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #290C8F Anchor #141210 Accent #DC9758 Secondary #262833 Surface #F3ECE3

Phthalo 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 #290C8F Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #200049

Phthalo 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 Phthalo Blue.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #290C8F Secondary #50557D Support #9D9088 Ink #18140F

Phthalo 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 Phthalo Blue carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #290C8F Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

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

Sunset Warmth Glow · 5 colors

Glow #290C8F Secondary #E86A71 Accent #F6934E Anchor #583B57 Surface #F7E7D7

Phthalo Blue glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

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Color Lab

How #290C8F 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 16/100

Cool

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

Softness 22/100

Low

Firm and assertive — carries weight and contrast.

Depth 72/100

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 21/100

Low

Clean and current — no dusty, aged cast.

Luxury 66/100

High

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

Brand distinctiveness 72/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 44/100

Moderate

Workable accent with care around contrast.

Surface fit 19/100

Very low

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

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #290C8F

For UI

For branding

For interior

For fashion

People also use #290C8F with

Cobalt Blue Purple Olive Green Gainsboro Russian Violet

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 13.6:1. Use

Subtle surface Use #CFC5F1 for cards and hover fills. Tint 80

Avoid beside #530B8E — 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 #290C8F 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: #290C8F;
  --color-base-rgb: 41 12 143;
  --color-base-oklch: oklch(32.3% 0.187 277.9);
  --color-50: #F3F0FE;
  --color-100: #E0D8FD;
  --color-200: #C3B4F9;
  --color-300: #9981EE;
  --color-400: #7153DF;
  --color-500: #5030C5;
  --color-600: #432C96;
  --color-700: #34256A;
  --color-800: #251C45;
  --color-900: #18132A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  phthalo-blue: {
    50: '#F3F0FE',
    100: '#E0D8FD',
    200: '#C3B4F9',
    300: '#9981EE',
    400: '#7153DF',
    500: '#5030C5',
    600: '#432C96',
    700: '#34256A',
    800: '#251C45',
    900: '#18132A',
  },
}

$base: #290C8F;
$base-ink: #FFFFFF;
$base-50: #F3F0FE;
$base-100: #E0D8FD;
$base-200: #C3B4F9;
$base-300: #9981EE;
$base-400: #7153DF;
$base-500: #5030C5;
$base-600: #432C96;
$base-700: #34256A;
$base-800: #251C45;
$base-900: #18132A;
$base-hover: #200971;
$base-subtle: #B6A7EC;

{
    "color": {
        "base": {
            "value": "#290C8F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F0FE",
                "type": "color"
            },
            "100": {
                "value": "#E0D8FD",
                "type": "color"
            },
            "200": {
                "value": "#C3B4F9",
                "type": "color"
            },
            "300": {
                "value": "#9981EE",
                "type": "color"
            },
            "400": {
                "value": "#7153DF",
                "type": "color"
            },
            "500": {
                "value": "#5030C5",
                "type": "color"
            },
            "600": {
                "value": "#432C96",
                "type": "color"
            },
            "700": {
                "value": "#34256A",
                "type": "color"
            },
            "800": {
                "value": "#251C45",
                "type": "color"
            },
            "900": {
                "value": "#18132A",
                "type": "color"
            }
        }
    }
}

Palettes built on #290C8F

Color Lab

Pairs with #290C8F

UI roles & guardrails

In real applications

Scales

Every model

Export