What color is #3907CC?

#3907CC is a medium, vivid indigo. In RGB it is rgb(57, 7, 204), and in HSL hsl(255, 93%, 41%).

Is #3907CC accessible as text?

On white, #3907CC has a contrast ratio of 10.11:1 (passes WCAG AA for body text); on black it is 2.08:1 (fails). For text placed on #3907CC, use white for the best readability.

What is the closest Tailwind color to #3907CC?

The nearest Tailwind CSS token is indigo-700 (#432DD7).

What colors go well with #3907CC?

#3907CC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #99CA07. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3907CC below.

Is #3907CC good for buttons?

#3907CC works well for buttons and highlights, but use white text on #3907CC — black text only reaches 2.08:1, below the 4.5:1 needed for normal-size labels.

Is #3907CC the same as CSS mediumblue?

No — #3907CC is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#3907CC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3907CC

Not just a swatch — here's how #3907CC works with other colors. Named schemes with #3907CC in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #3907CC Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #524EE9

Medium 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 Medium Blue.

Berry & Cream Lead · 5 colors

Lead #3907CC Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Medium 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 #3907CC Secondary #646CA4 Support #9D9088 Ink #18140F

Medium 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 Medium Blue carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #3907CC Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #21344A

Medium 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 #3907CC Secondary #E86A72 Accent #F6924E Anchor #583B57 Surface #F7E7D7

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

Build a working theme in the generator →

Color Lab

How #3907CC 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 66/100

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 7/100

Very low

Clean and current — no dusty, aged cast.

Luxury 54/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 97/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 48/100

Moderate

Workable accent with care around contrast.

Surface fit 13/100

Very low

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

Print safety 60/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #3907CC

For UI

For branding

For interior

For fashion

People also use #3907CC with

Neon Blue Dark Orchid Apple 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 10.1:1. Use

Subtle surface Use #D7CDF5 for cards and hover fills. Tint 80

Avoid beside #7907CA — 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 #3907CC 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: #3907CC;
  --color-base-rgb: 57 7 204;
  --color-base-oklch: oklch(40.9% 0.250 276.4);
  --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: {
  medium-blue: {
    50: '#F4F0FE',
    100: '#E1D8FD',
    200: '#C3B1FC',
    300: '#9A7CF4',
    400: '#734CE6',
    500: '#5129CC',
    600: '#44279B',
    700: '#35226D',
    800: '#251A47',
    900: '#18122B',
  },
}

$base: #3907CC;
$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: #2D06A1;
$base-subtle: #C2B2F2;

{
    "color": {
        "base": {
            "value": "#3907CC",
            "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 #3907CC

Color Lab

Pairs with #3907CC

UI roles & guardrails

In real applications

Scales

Every model

Export