Nearest named color: Jonquil
#EFC700
#EFC700
Nearest named
Jonquil
Family
Yellow
Lightness
84.0%
Chroma
0.172
Hue angle
94.2°
Temperature
Warm
Contrast on white
1.64:1 · Fail
Contrast on black
11.36:1 · AAA
Web-safe
#FFCC00
CSS oklch()
84% 0.17 94

#EFC700 is a mid-toned, warm green. On the Color Lab it reads organic and grounded, bold and ownable. It is too pale to lead as a primary accent and sits well as a supporting tone.

Palettes built on #EFC700

Not just a swatch — here's how #EFC700 works with other colors. Named schemes with #EFC700 in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

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

Desert Clay Center · 5 colors

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

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

Japanese Sand Base · 5 colors

Jonquil 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.

Minimal Editorial Surface · 5 colors

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.

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Color Lab

How #EFC700 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 86/100
Warm
Reads warm and advancing — inviting, energetic, draws the eye forward.
Softness 56/100
Moderate
Middle-weight — neither delicate nor heavy.
Depth 17/100
Very low
Airy and open — recedes, leaves the composition light.
Naturalness 62/100
High
Organic, earthy character — at home in wellness, food and craft brands.
Vintage feel 29/100
Low
A faint retro warmth without tipping into sepia.
Luxury 21/100
Low
Playful and accessible rather than exclusive.
Brand distinctiveness 66/100
High
Bold and ownable — memorable as a primary brand color.
UI accent fit 18/100
Very low
Weak as an action color — too pale, too dark or too muted to signal.
Surface fit 40/100
Low
Usable as a tinted surface in measured doses.
Print safety 73/100
High
Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #EFC700

For UI
For branding
For interior
For fashion
People also use #EFC700 with

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 11.4:1. Use
Subtle surface Use #F7F1D1 for cards and hover fills. Tint 80
Avoid beside #C8F000 — 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 #EFC700 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

Scales

ShadesBase darkened in 10% steps
TintsBase lifted toward white
TonesSaturation removed, lightness held
Monochromatic scaleDesign-system ready, 50–900

Every model

Export

:root {
  --color-base: #EFC700;
  --color-base-rgb: 239 199 0;
  --color-base-oklch: oklch(84.0% 0.172 94.2);
  --color-50: #FEFCF0;
  --color-100: #FDF7D8;
  --color-200: #FCEFB1;
  --color-300: #F8E377;
  --color-400: #ECD046;
  --color-500: #D2B522;
  --color-600: #9F8A23;
  --color-700: #70621F;
  --color-800: #484018;
  --color-900: #2C2811;
  --color-on-base: #141310;
}