What color is #EF310F?

#EF310F is a medium, vivid red. In RGB it is rgb(239, 49, 15), and in HSL hsl(9, 88%, 50%).

Is #EF310F accessible as text?

On white, #EF310F has a contrast ratio of 4.10:1 (fails WCAG AA for body text); on black it is 5.12:1 (passes). For text placed on #EF310F, use black for the best readability.

What is the closest Tailwind color to #EF310F?

The nearest Tailwind CSS token is red-500 (#FB2C36).

What colors go well with #EF310F?

#EF310F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #0FCEF0. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #EF310F below.

Is #EF310F good for buttons?

#EF310F works well for buttons and highlights, but use black text on #EF310F — white text only reaches 4.10:1, below the 4.5:1 needed for normal-size labels.

Is #EF310F the same as CSS red?

No — #EF310F is not the CSS named color red, but red (#FF0000) is the closest CSS named color.

#EF310F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #EF310F

Not just a swatch — here's how #EF310F works with other colors. Named schemes with #EF310F in its natural role, and a note on why the supporting colors balance it.

Sunset Warmth Glow · 5 colors

Glow #EF310F Secondary #E76F52 Accent #EA9C34 Anchor #5C3950 Surface #F4E8D6

Vermilion 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 #EF310F Anchor #3A2A20 Surface #F0E2D0 Accent #969665 Secondary #3B3833

Vermilion 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 #EF310F Secondary #7B4927 Surface #EAD9C0 Accent #43503A Anchor #5A222E

Vermilion 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 #EF310F Surface #F3E6D6 Anchor #5F2036 Accent #E6C2C1 Secondary #332B2D

Vermilion 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 #EF310F Secondary #DE9E91 Support #9B9186 Ink #17140F

Vermilion 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 Vermilion carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #EF310F 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 98/100

Warm

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 42/100

Moderate

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

Naturalness 15/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 22/100

Low

Clean and current — no dusty, aged cast.

Luxury 40/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 88/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 65/100

High

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

Surface fit 19/100

Very low

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

Print safety 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #EF310F

For UI

For branding

For interior

For fashion

People also use #EF310F with

Rose Honey Lagoon Blue Gainsboro Espresso

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 4.5:1. Use

Subtle surface Use #F6DAD5 for cards and hover fills. Tint 80

Avoid beside #F07C0F — 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 #EF310F 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: #EF310F;
  --color-base-rgb: 239 49 15;
  --color-base-oklch: oklch(61.7% 0.227 31.9);
  --color-50: #FEF2F0;
  --color-100: #FDDDD8;
  --color-200: #FABDB2;
  --color-300: #F0907F;
  --color-400: #E26650;
  --color-500: #C8442D;
  --color-600: #983B2A;
  --color-700: #6B2F24;
  --color-800: #46221B;
  --color-900: #2B1613;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  vermilion: {
    50: '#FEF2F0',
    100: '#FDDDD8',
    200: '#FABDB2',
    300: '#F0907F',
    400: '#E26650',
    500: '#C8442D',
    600: '#983B2A',
    700: '#6B2F24',
    800: '#46221B',
    900: '#2B1613',
  },
}

$base: #EF310F;
$base-ink: #141310;
$base-50: #FEF2F0;
$base-100: #FDDDD8;
$base-200: #FABDB2;
$base-300: #F0907F;
$base-400: #E26650;
$base-500: #C8442D;
$base-600: #983B2A;
$base-700: #6B2F24;
$base-800: #46221B;
$base-900: #2B1613;
$base-hover: #C0270C;
$base-subtle: #F2C7BF;

{
    "color": {
        "base": {
            "value": "#EF310F",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF2F0",
                "type": "color"
            },
            "100": {
                "value": "#FDDDD8",
                "type": "color"
            },
            "200": {
                "value": "#FABDB2",
                "type": "color"
            },
            "300": {
                "value": "#F0907F",
                "type": "color"
            },
            "400": {
                "value": "#E26650",
                "type": "color"
            },
            "500": {
                "value": "#C8442D",
                "type": "color"
            },
            "600": {
                "value": "#983B2A",
                "type": "color"
            },
            "700": {
                "value": "#6B2F24",
                "type": "color"
            },
            "800": {
                "value": "#46221B",
                "type": "color"
            },
            "900": {
                "value": "#2B1613",
                "type": "color"
            }
        }
    }
}