What color is #ECFA1C?

#ECFA1C is a medium, vivid yellow. In RGB it is rgb(236, 250, 28), and in HSL hsl(64, 96%, 55%).

Is #ECFA1C accessible as text?

On white, #ECFA1C has a contrast ratio of 1.15:1 (fails WCAG AA for body text); on black it is 18.26:1 (passes). For text placed on #ECFA1C, use black for the best readability.

What is the closest Tailwind color to #ECFA1C?

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

What colors go well with #ECFA1C?

#ECFA1C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #2D1EFA. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #ECFA1C below.

Is #ECFA1C good for buttons?

#ECFA1C works well for buttons and highlights, but use black text on #ECFA1C — white text only reaches 1.15:1, below the 4.5:1 needed for normal-size labels.

Is #ECFA1C the same as CSS yellow?

No — #ECFA1C is not the CSS named color yellow, but yellow (#FFFF00) is the closest CSS named color.

#ECFA1C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #ECFA1C

Not just a swatch — here's how #ECFA1C works with other colors. Named schemes with #ECFA1C in its natural role, and a note on why the supporting colors balance it.

Sunset Warmth Glow · 5 colors

Glow #ECFA1C 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 #ECFA1C 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 #ECFA1C 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 #ECFA1C Secondary #F9FFC8 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 #ECFA1C 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 #ECFA1C 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 55/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 6/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 24/100

Low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 13/100

Very low

Clean and current — no dusty, aged cast.

Luxury 9/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 80/100

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 60/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #ECFA1C

For UI

For branding

For interior

For fashion

People also use #ECFA1C with

Sandy Brown 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 16.2:1. Use

Subtle surface Use #F6F8D8 for cards and hover fills. Tint 80

Avoid beside #A2FA1E — 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 #ECFA1C 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: #ECFA1C;
  --color-base-rgb: 236 250 28;
  --color-base-oklch: oklch(94.3% 0.208 113.9);
  --color-50: #FDFEF0;
  --color-100: #FBFDD8;
  --color-200: #F7FCB1;
  --color-300: #EDF67A;
  --color-400: #DEE84A;
  --color-500: #C4CF26;
  --color-600: #959D25;
  --color-700: #696E21;
  --color-800: #444819;
  --color-900: #2A2C12;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cadmium-yellow: {
    50: '#FDFEF0',
    100: '#FBFDD8',
    200: '#F7FCB1',
    300: '#EDF67A',
    400: '#DEE84A',
    500: '#C4CF26',
    600: '#959D25',
    700: '#696E21',
    800: '#444819',
    900: '#2A2C12',
  },
}

$base: #ECFA1C;
$base-ink: #141310;
$base-50: #FDFEF0;
$base-100: #FBFDD8;
$base-200: #F7FCB1;
$base-300: #EDF67A;
$base-400: #DEE84A;
$base-500: #C4CF26;
$base-600: #959D25;
$base-700: #696E21;
$base-800: #444819;
$base-900: #2A2C12;
$base-hover: #CEDC04;
$base-subtle: #F2F6C3;

{
    "color": {
        "base": {
            "value": "#ECFA1C",
            "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": "#EDF67A",
                "type": "color"
            },
            "400": {
                "value": "#DEE84A",
                "type": "color"
            },
            "500": {
                "value": "#C4CF26",
                "type": "color"
            },
            "600": {
                "value": "#959D25",
                "type": "color"
            },
            "700": {
                "value": "#696E21",
                "type": "color"
            },
            "800": {
                "value": "#444819",
                "type": "color"
            },
            "900": {
                "value": "#2A2C12",
                "type": "color"
            }
        }
    }
}

Palettes built on #ECFA1C

Color Lab

Pairs with #ECFA1C

UI roles & guardrails

In real applications

Scales

Every model

Export