#FFEF65#FFEF65

#FFEF65 is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 94.0% C 0.157 H 102.7°. Best body text is #000000 at 17.79:1 contrast (WCAG AA passes).

Color values

HEX	#FFEF65
RGB	rgb(255, 239, 101)
HSL	hsl(54, 100%, 70%)
HSV	hsv(54, 60%, 100%)
CMYK	cmyk(0%, 6.3%, 60.4%, 0%)
CIE-LAB	lab(93.42, -10.73, 66.87)
CIE-LCH	lch(93.42, 67.72, 99.11°)
OKLab	oklab(93.96% -0.0345 0.1531)
OKLCH	oklch(93.96% 0.157 102.7)
XYZ	xyz(74.4582, 83.9354, 24.5885)
Luminance	0.8393 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFEF65 #6575FF

analogous

#FFA265 #FFEF65 #C2FF65

triadic

#FFEF65 #65FFEF #EF65FF

tetradic

#FFEF65 #65FFA2 #6575FF #FF65C2

square

#FFEF65 #65FFA2 #6575FF #FF65C2

split-complementary

#FFEF65 #65C2FF #A265FF

monochromatic

#EAD100 #FFE928 #FFEF65 #FFF5A2 #FFFCDF

Accessibility & contrast

On white

1.18

#FFEF65 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.79

#FFEF65 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFEF65

17.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFEF65	#FFFFFF	#000000	##000000
##FFEF65	1.00	1.18	17.79	17.79
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.79	21.00	1.00	1.00
##000000	17.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE855

Deuteranopia (green-blind)

#FFEF6C

Tritanopia (blue-blind)

#FFE0D2

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ffef65;
/* rgb */ color: rgb(255, 239, 101);
/* oklch */ color: oklch(94.0% 0.157 102.7);

Tailwind

colors: {
  custom: {
    50: '#fff496',
    500: '#ffef65',
    950: '#000000',
  },
}

SCSS

$custom: #ffef65;
$custom-light: #fff496;
$custom-dark: #000000;

JSON

{
  "hex": "#ffef65",
  "rgb": {
    "r": 255,
    "g": 239,
    "b": 101
  },
  "hsl": {
    "h": 53.766,
    "s": 100,
    "l": 69.804
  },
  "oklch": {
    "l": 0.93961,
    "c": 0.15695,
    "h": 102.7
  },
  "luminance": 0.83933
}

Semantic roles & 50–950 ramp

primary

#FFEF65

secondary

#2E40DA

accent

#18E600

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#19170E

muted

#87857F

Preview Lab

Preview with #FFEF65

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

Preview Lab → · Contrast checker → · Palette generator →