#EFC53C#EFC53C

#EFC53C is a very light, vivid yellow. Relative luminance 0.586; OKLCH L 83.8% C 0.153 H 91.0°. Best body text is #000000 at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#EFC53C
RGB	rgb(239, 197, 60)
HSL	hsl(46, 85%, 59%)
HSV	hsv(46, 75%, 94%)
CMYK	cmyk(0%, 17.6%, 74.9%, 6.3%)
CIE-LAB	lab(81.08, 1.68, 69.87)
CIE-LCH	lch(81.08, 69.89, 88.63°)
OKLab	oklab(83.76% -0.0027 0.1533)
OKLCH	oklch(83.76% 0.153 91)
XYZ	xyz(56.3817, 58.6130, 12.6179)
Luminance	0.5861 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFC53C #3C66EF

analogous

#EF6B3C #EFC53C #BFEF3C

triadic

#EFC53C #3CEFC5 #C53CEF

tetradic

#EFC53C #3CEF6B #3C66EF #EF3CBF

square

#EFC53C #3CEF6B #3C66EF #EF3CBF

split-complementary

#EFC53C #3CBFEF #6B3CEF

monochromatic

#A3800D #DCAC12 #EFC53C #F4D675 #F8E7AD

Accessibility & contrast

On white

1.65

#EFC53C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.72

#EFC53C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFC53C

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFC53C	#FFFFFF	#000000	##000000
##EFC53C	1.00	1.65	12.72	12.72
#FFFFFF	1.65	1.00	21.00	21.00
#000000	12.72	21.00	1.00	1.00
##000000	12.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DBC224

Deuteranopia (green-blind)

#E5CE44

Tritanopia (blue-blind)

#FFB4AA

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #efc53c;
/* rgb */ color: rgb(239, 197, 60);
/* oklch */ color: oklch(83.8% 0.153 91.0);

Tailwind

colors: {
  custom: {
    50: '#f9d67b',
    500: '#efc53c',
    950: '#000000',
  },
}

SCSS

$custom: #efc53c;
$custom-light: #f9d67b;
$custom-dark: #000000;

JSON

{
  "hex": "#efc53c",
  "rgb": {
    "r": 239,
    "g": 197,
    "b": 60
  },
  "hsl": {
    "h": 45.922,
    "s": 84.834,
    "l": 58.627
  },
  "oklch": {
    "l": 0.83758,
    "c": 0.1533,
    "h": 91
  },
  "luminance": 0.58609
}

Semantic roles & 50–950 ramp

primary

#EFC53C

secondary

#2A47A5

accent

#5DFB2D

background

#FFFEFB

surface

#FFFBF2

border

#D7D4CC

text

#18140A

muted

#86837D

Preview Lab

Preview with #EFC53C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →