#EFEC63#EFEC63

#EFEC63 is a very light, vivid yellow. Relative luminance 0.792; OKLCH L 92.0% C 0.157 H 107.9°. Best body text is #000000 at 16.85:1 contrast (WCAG AA passes).

Color values

HEX	#EFEC63
RGB	rgb(239, 236, 99)
HSL	hsl(59, 81%, 66%)
HSV	hsv(59, 59%, 94%)
CMYK	cmyk(0%, 1.3%, 58.6%, 6.3%)
CIE-LAB	lab(91.34, -15.84, 65.07)
CIE-LCH	lch(91.34, 66.97, 103.68°)
OKLab	oklab(91.99% -0.0484 0.1494)
OKLCH	oklch(91.99% 0.157 107.9)
XYZ	xyz(67.8463, 79.2445, 23.5237)
Luminance	0.7924 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFEC63 #6366EF

analogous

#EFA663 #EFEC63 #ACEF63

triadic

#EFEC63 #63EFEC #EC63EF

tetradic

#EFEC63 #63EFA6 #6366EF #EF63AC

square

#EFEC63 #63EFA6 #6366EF #EF63AC

split-complementary

#EFEC63 #63ACEF #A663EF

monochromatic

#C4C014 #E9E52B #EFEC63 #F5F39B #FAFAD2

Accessibility & contrast

On white

1.25

#EFEC63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.85

#EFEC63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFEC63

16.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFEC63	#FFFFFF	#000000	##000000
##EFEC63	1.00	1.25	16.85	16.85
#FFFFFF	1.25	1.00	21.00	21.00
#000000	16.85	21.00	1.00	1.00
##000000	16.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE353

Deuteranopia (green-blind)

#FFE96B

Tritanopia (blue-blind)

#FFDECF

Achromatopsia (no color)

#E6E6E6

Design tokens & code

CSS

--color: #efec63;
/* rgb */ color: rgb(239, 236, 99);
/* oklch */ color: oklch(92.0% 0.157 107.9);

Tailwind

colors: {
  custom: {
    50: '#f7f194',
    500: '#efec63',
    950: '#000000',
  },
}

SCSS

$custom: #efec63;
$custom-light: #f7f194;
$custom-dark: #000000;

JSON

{
  "hex": "#efec63",
  "rgb": {
    "r": 239,
    "g": 236,
    "b": 99
  },
  "hsl": {
    "h": 58.714,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.91992,
    "c": 0.15702,
    "h": 107.9
  },
  "luminance": 0.79242
}

Semantic roles & 50–950 ramp

primary

#EFEC63

secondary

#3538C1

accent

#0CDE08

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18160E

muted

#86857F

Preview Lab

Preview with #EFEC63

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

Preview Lab → · Contrast checker → · Palette generator →