What color is #EFCF00?

#EFCF00 is a medium, vivid yellow. In RGB it is rgb(239, 207, 0), and in HSL hsl(52, 100%, 47%).

Is #EFCF00 accessible as text?

On white, #EFCF00 has a contrast ratio of 1.54:1 (fails WCAG AA for body text); on black it is 13.60:1 (passes). For text placed on #EFCF00, use black for the best readability.

What is the closest Tailwind color to #EFCF00?

The nearest Tailwind CSS token is yellow-400 (#FDC700).

What colors go well with #EFCF00?

#EFCF00 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #0020F0. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #EFCF00 below.

Is #EFCF00 good for buttons?

#EFCF00 works well for buttons and highlights, but use black text on #EFCF00 — white text only reaches 1.54:1, below the 4.5:1 needed for normal-size labels.

Is #EFCF00 the same as CSS gold?

No — #EFCF00 is not the CSS named color gold, but gold (#FFD700) is the closest CSS named color.

#EFCF00 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #EFCF00

Not just a swatch — here's how #EFCF00 works with other colors. Named schemes with #EFCF00 in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #EFCF00 Secondary #B2680E Accent #6E7A48 Surface #F3ECDD Anchor #3A2A1F

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

Botanical Studio Lead · 5 colors

Lead #EFCF00 Secondary #546A35 Accent #B2680E Surface #F0E9D6 Anchor #3D2E21

Jonquil leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Desert Clay Center · 5 colors

Center #EFCF00 Surface #DFCFA8 Secondary #AE7C51 Accent #919970 Anchor #3D2D1F

Jonquil holds the warm center of this desert palette with sand and clay beside it, a muted-sage accent and a dark-brown anchor.

Coastal Morning Lead · 5 colors

Lead #EFCF00 Accent #AAC4B7 Surface #E4D8BE Secondary #9AA09F Anchor #173747

Jonquil opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #EFCF00 Secondary #FFFBCC Support #999186 Ink #17140F

Jonquil 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 Jonquil carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #EFCF00 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 84/100

Warm

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

Softness 56/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 15/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 53/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 20/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 68/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 15/100

Very low

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

Surface fit 41/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #EFCF00

For UI

For branding

For interior

For fashion

People also use #EFCF00 with

Neon Orange Lawn Green Cerulean Greige 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 12.0:1. Use

Subtle surface Use #F7F2D1 for cards and hover fills. Tint 80

Avoid beside #C0F000 — 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 #EFCF00 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: #EFCF00;
  --color-base-rgb: 239 207 0;
  --color-base-oklch: oklch(85.6% 0.177 97.8);
  --color-50: #FEFDF0;
  --color-100: #FDF8D8;
  --color-200: #FCF2B1;
  --color-300: #F8E777;
  --color-400: #ECD646;
  --color-500: #D2BB22;
  --color-600: #9F8F23;
  --color-700: #70651F;
  --color-800: #484218;
  --color-900: #2C2911;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  jonquil: {
    50: '#FEFDF0',
    100: '#FDF8D8',
    200: '#FCF2B1',
    300: '#F8E777',
    400: '#ECD646',
    500: '#D2BB22',
    600: '#9F8F23',
    700: '#70651F',
    800: '#484218',
    900: '#2C2911',
  },
}

$base: #EFCF00;
$base-ink: #141310;
$base-50: #FEFDF0;
$base-100: #FDF8D8;
$base-200: #FCF2B1;
$base-300: #F8E777;
$base-400: #ECD646;
$base-500: #D2BB22;
$base-600: #9F8F23;
$base-700: #70651F;
$base-800: #484218;
$base-900: #2C2911;
$base-hover: #C0A600;
$base-subtle: #F5EDB8;

{
    "color": {
        "base": {
            "value": "#EFCF00",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEFDF0",
                "type": "color"
            },
            "100": {
                "value": "#FDF8D8",
                "type": "color"
            },
            "200": {
                "value": "#FCF2B1",
                "type": "color"
            },
            "300": {
                "value": "#F8E777",
                "type": "color"
            },
            "400": {
                "value": "#ECD646",
                "type": "color"
            },
            "500": {
                "value": "#D2BB22",
                "type": "color"
            },
            "600": {
                "value": "#9F8F23",
                "type": "color"
            },
            "700": {
                "value": "#70651F",
                "type": "color"
            },
            "800": {
                "value": "#484218",
                "type": "color"
            },
            "900": {
                "value": "#2C2911",
                "type": "color"
            }
        }
    }
}

Palettes built on #EFCF00

Color Lab

Pairs with #EFCF00

UI roles & guardrails

In real applications

Scales

Every model

Export