#EFC43C#EFC43C

#EFC43C is a very light, vivid yellow. Relative luminance 0.582; OKLCH L 83.6% C 0.153 H 90.5°. Best body text is #000000 at 12.63:1 contrast (WCAG AA passes).

Color values

HEX	#EFC43C
RGB	rgb(239, 196, 60)
HSL	hsl(46, 85%, 59%)
HSV	hsv(46, 75%, 94%)
CMYK	cmyk(0%, 18%, 74.9%, 6.3%)
CIE-LAB	lab(80.83, 2.19, 69.63)
CIE-LCH	lch(80.83, 69.67, 88.20°)
OKLab	oklab(83.56% -0.0012 0.1528)
OKLCH	oklch(83.56% 0.153 90.5)
XYZ	xyz(56.1554, 58.1604, 12.5424)
Luminance	0.5816 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFC43C #3C67EF

analogous

#EF6A3C #EFC43C #C0EF3C

triadic

#EFC43C #3CEFC4 #C43CEF

tetradic

#EFC43C #3CEF6A #3C67EF #EF3CC0

square

#EFC43C #3CEF6A #3C67EF #EF3CC0

split-complementary

#EFC43C #3CC0EF #6A3CEF

monochromatic

#A37F0D #DCAB12 #EFC43C #F4D575 #F8E6AD

Accessibility & contrast

On white

1.66

#EFC43C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.63

#EFC43C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFC43C

12.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFC43C	#FFFFFF	#000000	##000000
##EFC43C	1.00	1.66	12.63	12.63
#FFFFFF	1.66	1.00	21.00	21.00
#000000	12.63	21.00	1.00	1.00
##000000	12.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC224

Deuteranopia (green-blind)

#E5CE44

Tritanopia (blue-blind)

#FFB3AA

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #efc43c;
/* rgb */ color: rgb(239, 196, 60);
/* oklch */ color: oklch(83.6% 0.153 90.5);

Tailwind

colors: {
  custom: {
    50: '#f9d57b',
    500: '#efc43c',
    950: '#000000',
  },
}

SCSS

$custom: #efc43c;
$custom-light: #f9d57b;
$custom-dark: #000000;

JSON

{
  "hex": "#efc43c",
  "rgb": {
    "r": 239,
    "g": 196,
    "b": 60
  },
  "hsl": {
    "h": 45.587,
    "s": 84.834,
    "l": 58.627
  },
  "oklch": {
    "l": 0.83561,
    "c": 0.15277,
    "h": 90.5
  },
  "luminance": 0.58157
}

Semantic roles & 50–950 ramp

primary

#EFC43C

secondary

#2A48A5

accent

#5EFB2D

background

#FFFEFB

surface

#FFFBF2

border

#D7D4CC

text

#18140A

muted

#86837D

Preview Lab

Preview with #EFC43C

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

Preview Lab → · Contrast checker → · Palette generator →