What color is #ECFB0F?

#ECFB0F is a medium, vivid yellow. In RGB it is rgb(236, 251, 15), and in HSL hsl(64, 97%, 52%).

Is #ECFB0F accessible as text?

On white, #ECFB0F has a contrast ratio of 1.14:1 (fails WCAG AA for body text); on black it is 18.37:1 (passes). For text placed on #ECFB0F, use black for the best readability.

What is the closest Tailwind color to #ECFB0F?

The nearest Tailwind CSS token is lime-300 (#BBF451).

What colors go well with #ECFB0F?

#ECFB0F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #1E0EFB. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #ECFB0F below.

Is #ECFB0F good for buttons?

#ECFB0F works well for buttons and highlights, but use black text on #ECFB0F — white text only reaches 1.14:1, below the 4.5:1 needed for normal-size labels.

Is #ECFB0F the same as CSS yellow?

No — #ECFB0F is not the CSS named color yellow, but yellow (#FFFF00) is the closest CSS named color.

#ECFB0F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #ECFB0F

Not just a swatch — here's how #ECFB0F works with other colors. Named schemes with #ECFB0F in its natural role, and a note on why the supporting colors balance it.

Sunset Warmth Glow · 5 colors

Glow #ECFB0F Secondary #E37439 Accent #DEA426 Anchor #5F394B Surface #F2E9D6

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

Japanese Sand Base · 5 colors

Base #ECFB0F Surface #EEE9DC Highlight #F6F1E7 Secondary #B8B09F Ink #2B2723

Cadmium Yellow sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Warm Autumn Interior Dominant · 5 colors

Dominant #ECFB0F Secondary #B06906 Accent #6C7B49 Surface #F2ECDD Anchor #3A2B1F

This palette keeps Cadmium Yellow as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #ECFB0F Secondary #F9FFC7 Support #999186 Ink #17140F

Cadmium Yellow 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 Cadmium Yellow carrying the quiet middle.

Luxury Packaging Feature · 5 colors

Feature #ECFB0F Anchor #141210 Accent #C5A44B Secondary #292A1F Surface #F2EDE3

Cadmium Yellow 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.

Build a working theme in the generator →

Color Lab

How #ECFB0F 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 72/100

Warm

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

Softness 54/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 6/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 22/100

Low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 12/100

Very low

Clean and current — no dusty, aged cast.

Luxury 9/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 81/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 4/100

Very low

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

Surface fit 50/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 59/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #ECFB0F

For UI

For branding

For interior

For fashion

People also use #ECFB0F with

Orange Peel Lawn Green Han Purple Platinum Army Green

UI roles & guardrails

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

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

Large display Only on dark surfaces. Avoid

Background Pair with #141310 text at 16.3:1. Use

Subtle surface Use #F5F8D5 for cards and hover fills. Tint 80

Avoid beside #9CFB0E — 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 #ECFB0F 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

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Export

:root {
  --color-base: #ECFB0F;
  --color-base-rgb: 236 251 15;
  --color-base-oklch: oklch(94.5% 0.211 114.1);
  --color-50: #FDFEF0;
  --color-100: #FBFDD8;
  --color-200: #F7FCB1;
  --color-300: #EEF679;
  --color-400: #DFE949;
  --color-500: #C4D025;
  --color-600: #959D25;
  --color-700: #696F20;
  --color-800: #454819;
  --color-900: #2A2C11;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cadmium-yellow: {
    50: '#FDFEF0',
    100: '#FBFDD8',
    200: '#F7FCB1',
    300: '#EEF679',
    400: '#DFE949',
    500: '#C4D025',
    600: '#959D25',
    700: '#696F20',
    800: '#454819',
    900: '#2A2C11',
  },
}

$base: #ECFB0F;
$base-ink: #141310;
$base-50: #FDFEF0;
$base-100: #FBFDD8;
$base-200: #F7FCB1;
$base-300: #EEF679;
$base-400: #DFE949;
$base-500: #C4D025;
$base-600: #959D25;
$base-700: #696F20;
$base-800: #454819;
$base-900: #2A2C11;
$base-hover: #C3D103;
$base-subtle: #F2F5BF;

{
    "color": {
        "base": {
            "value": "#ECFB0F",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FDFEF0",
                "type": "color"
            },
            "100": {
                "value": "#FBFDD8",
                "type": "color"
            },
            "200": {
                "value": "#F7FCB1",
                "type": "color"
            },
            "300": {
                "value": "#EEF679",
                "type": "color"
            },
            "400": {
                "value": "#DFE949",
                "type": "color"
            },
            "500": {
                "value": "#C4D025",
                "type": "color"
            },
            "600": {
                "value": "#959D25",
                "type": "color"
            },
            "700": {
                "value": "#696F20",
                "type": "color"
            },
            "800": {
                "value": "#454819",
                "type": "color"
            },
            "900": {
                "value": "#2A2C11",
                "type": "color"
            }
        }
    }
}

Palettes built on #ECFB0F

Color Lab

Pairs with #ECFB0F

UI roles & guardrails

In real applications

Scales

Every model

Export