#EFEF81#EFEF81

#EFEF81 is a very light, vivid yellow. Relative luminance 0.817; OKLCH L 93.0% C 0.133 H 108.7°. Best body text is #000000 at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#EFEF81
RGB	rgb(239, 239, 129)
HSL	hsl(60, 77%, 72%)
HSV	hsv(60, 46%, 94%)
CMYK	cmyk(0%, 0%, 46%, 6.3%)
CIE-LAB	lab(92.43, -14.92, 52.85)
CIE-LCH	lch(92.43, 54.92, 105.76°)
OKLab	oklab(92.95% -0.0427 0.126)
OKLCH	oklch(92.95% 0.133 108.7)
XYZ	xyz(70.4270, 81.6703, 32.8186)
Luminance	0.8167 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFEF81 #8181EF

analogous

#EFB881 #EFEF81 #B8EF81

triadic

#EFEF81 #81EFEF #EF81EF

tetradic

#EFEF81 #81EFB8 #8181EF #EF81B8

square

#EFEF81 #81EFB8 #8181EF #EF81B8

split-complementary

#EFEF81 #81B8EF #B881EF

monochromatic

#DADA1C #E8E84B #EFEF81 #F6F6B7 #FCFCE4

Accessibility & contrast

On white

1.21

#EFEF81 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.33

#EFEF81 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFEF81

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFEF81	#FFFFFF	#000000	##000000
##EFEF81	1.00	1.21	17.33	17.33
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.33	21.00	1.00	1.00
##000000	17.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE777

Deuteranopia (green-blind)

#FFEB86

Tritanopia (blue-blind)

#FDE3D5

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #efef81;
/* rgb */ color: rgb(239, 239, 129);
/* oklch */ color: oklch(93.0% 0.133 108.7);

Tailwind

colors: {
  custom: {
    50: '#f6f4a8',
    500: '#efef81',
    950: '#000000',
  },
}

SCSS

$custom: #efef81;
$custom-light: #f6f4a8;
$custom-dark: #000000;

JSON

{
  "hex": "#efef81",
  "rgb": {
    "r": 239,
    "g": 239,
    "b": 129
  },
  "hsl": {
    "h": 60,
    "s": 77.465,
    "l": 72.157
  },
  "oklch": {
    "l": 0.92954,
    "c": 0.13304,
    "h": 108.7
  },
  "luminance": 0.81669
}

Semantic roles & 50–950 ramp

primary

#EFEF81

secondary

#4B4BC9

accent

#0CDA0C

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFEF81

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

Preview Lab → · Contrast checker → · Palette generator →