What color is #CA3537?

#CA3537 is a medium red. In RGB it is rgb(202, 53, 55), and in HSL hsl(359, 58%, 50%).

Is #CA3537 accessible as text?

On white, #CA3537 has a contrast ratio of 5.15:1 (passes WCAG AA for body text); on black it is 4.08:1 (fails). For text placed on #CA3537, use white for the best readability.

What is the closest Tailwind color to #CA3537?

The nearest Tailwind CSS token is orange-700 (#CA3500).

What colors go well with #CA3537?

#CA3537 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #36C9C7. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #CA3537 below.

Is #CA3537 good for buttons?

#CA3537 works well for buttons and highlights, but use white text on #CA3537 — black text only reaches 4.08:1, below the 4.5:1 needed for normal-size labels.

Is #CA3537 the same as CSS crimson?

No — #CA3537 is not the CSS named color crimson, but crimson (#DC143C) is the closest CSS named color.

#CA3537 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #CA3537

Not just a swatch — here's how #CA3537 works with other colors. Named schemes with #CA3537 in its natural role, and a note on why the supporting colors balance it.

Sunset Warmth Glow · 5 colors

Glow #CA3537 Secondary #E76E54 Accent #EB9B36 Anchor #5C3951 Surface #F5E8D6

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

Modern Café Dominant · 5 colors

Dominant #CA3537 Anchor #3A2A21 Surface #F0E2D0 Accent #969664 Secondary #3C3833

Fire Engine Red anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Vintage Leather Lead · 5 colors

Lead #CA3537 Secondary #7B4928 Surface #EAD9C0 Accent #43503A Anchor #5A222E

Fire Engine Red 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 #CA3537 Surface #F3E6D6 Anchor #5F2037 Accent #E6C2C2 Secondary #332B2E

Fire Engine Red sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #CA3537 Secondary #C38F8A Support #9B9186 Ink #17140F

Fire Engine Red 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 Fire Engine Red carrying the quiet middle.

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Color Lab

How #CA3537 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 95/100

Warm

Reads warm and advancing — inviting, energetic, draws the eye forward.

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 47/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 41/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 46/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 72/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 91/100

Very high

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

Surface fit 13/100

Very low

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

Print safety 80/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #CA3537

For UI

For branding

For interior

For fashion

People also use #CA3537 with

Mulberry Peru Robin Egg Blue Gainsboro Espresso

UI roles & guardrails

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

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 5.2:1. Use

Subtle surface Use #F0DBDB for cards and hover fills. Tint 80

Avoid beside #C96436 — 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 #CA3537 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: #CA3537;
  --color-base-rgb: 202 53 55;
  --color-base-oklch: oklch(55.8% 0.186 25.0);
  --color-50: #FCF2F3;
  --color-100: #F7DEDF;
  --color-200: #EEBFBF;
  --color-300: #DD9293;
  --color-400: #C9696B;
  --color-500: #AD4749;
  --color-600: #853D3E;
  --color-700: #5F3031;
  --color-800: #3E2323;
  --color-900: #261717;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  fire-engine-red: {
    50: '#FCF2F3',
    100: '#F7DEDF',
    200: '#EEBFBF',
    300: '#DD9293',
    400: '#C9696B',
    500: '#AD4749',
    600: '#853D3E',
    700: '#5F3031',
    800: '#3E2323',
    900: '#261717',
  },
}

$base: #CA3537;
$base-ink: #FFFFFF;
$base-50: #FCF2F3;
$base-100: #F7DEDF;
$base-200: #EEBFBF;
$base-300: #DD9293;
$base-400: #C9696B;
$base-500: #AD4749;
$base-600: #853D3E;
$base-700: #5F3031;
$base-800: #3E2323;
$base-900: #261717;
$base-hover: #A12B2D;
$base-subtle: #EAC8C8;

{
    "color": {
        "base": {
            "value": "#CA3537",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FCF2F3",
                "type": "color"
            },
            "100": {
                "value": "#F7DEDF",
                "type": "color"
            },
            "200": {
                "value": "#EEBFBF",
                "type": "color"
            },
            "300": {
                "value": "#DD9293",
                "type": "color"
            },
            "400": {
                "value": "#C9696B",
                "type": "color"
            },
            "500": {
                "value": "#AD4749",
                "type": "color"
            },
            "600": {
                "value": "#853D3E",
                "type": "color"
            },
            "700": {
                "value": "#5F3031",
                "type": "color"
            },
            "800": {
                "value": "#3E2323",
                "type": "color"
            },
            "900": {
                "value": "#261717",
                "type": "color"
            }
        }
    }
}

Palettes built on #CA3537

Color Lab

Pairs with #CA3537

UI roles & guardrails

In real applications

Scales

Every model

Export