#EFEF61#EFEF61

#EFEF61 is a very light, vivid yellow. Relative luminance 0.809; OKLCH L 92.6% C 0.162 H 109.2°. Best body text is #000000 at 17.19:1 contrast (WCAG AA passes).

Color values

HEX	#EFEF61
RGB	rgb(239, 239, 97)
HSL	hsl(60, 82%, 66%)
HSV	hsv(60, 59%, 94%)
CMYK	cmyk(0%, 0%, 59.4%, 6.3%)
CIE-LAB	lab(92.11, -17.43, 66.74)
CIE-LCH	lch(92.11, 68.98, 104.64°)
OKLab	oklab(92.6% -0.0531 0.1527)
OKLCH	oklch(92.6% 0.162 109.2)
XYZ	xyz(68.6228, 80.9487, 23.3167)
Luminance	0.8095 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFEF61 #6161EF

analogous

#EFA861 #EFEF61 #A8EF61

triadic

#EFEF61 #61EFEF #EF61EF

tetradic

#EFEF61 #61EFA8 #6161EF #EF61A8

square

#EFEF61 #61EFA8 #6161EF #EF61A8

split-complementary

#EFEF61 #61A8EF #A861EF

monochromatic

#C2C214 #E9E929 #EFEF61 #F5F599 #FAFAD0

Accessibility & contrast

On white

1.22

#EFEF61 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.19

#EFEF61 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFEF61

17.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFEF61	#FFFFFF	#000000	##000000
##EFEF61	1.00	1.22	17.19	17.19
#FFFFFF	1.22	1.00	21.00	21.00
#000000	17.19	21.00	1.00	1.00
##000000	17.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE650

Deuteranopia (green-blind)

#FFEB69

Tritanopia (blue-blind)

#FFE1D1

Achromatopsia (no color)

#E8E8E8

Design tokens & code

CSS

--color: #efef61;
/* rgb */ color: rgb(239, 239, 97);
/* oklch */ color: oklch(92.6% 0.162 109.2);

Tailwind

colors: {
  custom: {
    50: '#f7f493',
    500: '#efef61',
    950: '#000000',
  },
}

SCSS

$custom: #efef61;
$custom-light: #f7f493;
$custom-dark: #000000;

JSON

{
  "hex": "#efef61",
  "rgb": {
    "r": 239,
    "g": 239,
    "b": 97
  },
  "hsl": {
    "h": 60,
    "s": 81.609,
    "l": 65.882
  },
  "oklch": {
    "l": 0.92595,
    "c": 0.16164,
    "h": 109.2
  },
  "luminance": 0.80947
}

Semantic roles & 50–950 ramp

primary

#EFEF61

secondary

#3434C0

accent

#08DE08

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFEF61

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

Preview Lab → · Contrast checker → · Palette generator →