#F3EF64#F3EF64

#F3EF64 is a very light, vivid yellow. Relative luminance 0.817; OKLCH L 92.9% C 0.159 H 107.6°. Best body text is #000000 at 17.34:1 contrast (WCAG AA passes).

Color values

HEX	#F3EF64
RGB	rgb(243, 239, 100)
HSL	hsl(58, 86%, 67%)
HSV	hsv(58, 59%, 95%)
CMYK	cmyk(0%, 1.6%, 58.8%, 4.7%)
CIE-LAB	lab(92.45, -15.63, 65.94)
CIE-LCH	lch(92.45, 67.77, 103.33°)
OKLab	oklab(92.95% -0.0479 0.1513)
OKLCH	oklch(92.95% 0.159 107.6)
XYZ	xyz(70.1311, 81.7099, 24.1314)
Luminance	0.8171 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F3EF64 #6468F3

analogous

#F3A864 #F3EF64 #AFF364

triadic

#F3EF64 #64F3EF #EF64F3

tetradic

#F3EF64 #64F3A8 #6468F3 #F364AF

square

#F3EF64 #64F3A8 #6468F3 #F364AF

split-complementary

#F3EF64 #64AFF3 #A864F3

monochromatic

#CDC710 #EFE92B #F3EF64 #F7F59D #FCFBD6

Accessibility & contrast

On white

1.21

#F3EF64 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.34

#F3EF64 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F3EF64

17.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F3EF64	#FFFFFF	#000000	##000000
##F3EF64	1.00	1.21	17.34	17.34
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.34	21.00	1.00	1.00
##000000	17.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE654

Deuteranopia (green-blind)

#FFEC6C

Tritanopia (blue-blind)

#FFE1D1

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #f3ef64;
/* rgb */ color: rgb(243, 239, 100);
/* oklch */ color: oklch(92.9% 0.159 107.6);

Tailwind

colors: {
  custom: {
    50: '#faf495',
    500: '#f3ef64',
    950: '#000000',
  },
}

SCSS

$custom: #f3ef64;
$custom-light: #faf495;
$custom-dark: #000000;

JSON

{
  "hex": "#f3ef64",
  "rgb": {
    "r": 243,
    "g": 239,
    "b": 100
  },
  "hsl": {
    "h": 58.322,
    "s": 85.629,
    "l": 67.255
  },
  "oklch": {
    "l": 0.92949,
    "c": 0.15869,
    "h": 107.6
  },
  "luminance": 0.81708
}

Semantic roles & 50–950 ramp

primary

#F3EF64

secondary

#3237C9

accent

#0AE203

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #F3EF64

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

Preview Lab → · Contrast checker → · Palette generator →