#F3EF63#F3EF63

#F3EF63 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	#F3EF63
RGB	rgb(243, 239, 99)
HSL	hsl(58, 86%, 67%)
HSV	hsv(58, 59%, 95%)
CMYK	cmyk(0%, 1.6%, 59.3%, 4.7%)
CIE-LAB	lab(92.44, -15.69, 66.35)
CIE-LCH	lch(92.44, 68.18, 103.31°)
OKLab	oklab(92.94% -0.0482 0.152)
OKLCH	oklch(92.94% 0.159 107.6)
XYZ	xyz(70.0830, 81.6906, 23.8781)
Luminance	0.8169 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F3EF63 #6367F3

analogous

#F3A763 #F3EF63 #AFF363

triadic

#F3EF63 #63F3EF #EF63F3

tetradic

#F3EF63 #63F3A7 #6367F3 #F363AF

square

#F3EF63 #63F3A7 #6367F3 #F363AF

split-complementary

#F3EF63 #63AFF3 #A763F3

monochromatic

#CCC710 #EFE92A #F3EF63 #F7F59C #FCFBD5

Accessibility & contrast

On white

1.21

#F3EF63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.34

#F3EF63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F3EF63

17.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F3EF63	#FFFFFF	#000000	##000000
##F3EF63	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)

#FFE653

Deuteranopia (green-blind)

#FFEC6B

Tritanopia (blue-blind)

#FFE1D1

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #f3ef63;
/* rgb */ color: rgb(243, 239, 99);
/* oklch */ color: oklch(92.9% 0.159 107.6);

Tailwind

colors: {
  custom: {
    50: '#faf495',
    500: '#f3ef63',
    950: '#000000',
  },
}

SCSS

$custom: #f3ef63;
$custom-light: #faf495;
$custom-dark: #000000;

JSON

{
  "hex": "#f3ef63",
  "rgb": {
    "r": 243,
    "g": 239,
    "b": 99
  },
  "hsl": {
    "h": 58.333,
    "s": 85.714,
    "l": 67.059
  },
  "oklch": {
    "l": 0.92939,
    "c": 0.15949,
    "h": 107.6
  },
  "luminance": 0.81689
}

Semantic roles & 50–950 ramp

primary

#F3EF63

secondary

#3236C8

accent

#09E203

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #F3EF63

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

Preview Lab → · Contrast checker → · Palette generator →