#FFFF64#FFFF64

#FFFF64 is a very light, vivid yellow. Relative luminance 0.937; OKLCH L 97.2% C 0.173 H 109.2°. Best body text is #000000 at 19.74:1 contrast (WCAG AA passes).

Color values

HEX	#FFFF64
RGB	rgb(255, 255, 100)
HSL	hsl(60, 100%, 70%)
HSV	hsv(60, 61%, 100%)
CMYK	cmyk(0%, 0%, 60.8%, 0%)
CIE-LAB	lab(97.51, -18.57, 71.69)
CIE-LCH	lch(97.51, 74.05, 104.52°)
OKLab	oklab(97.21% -0.0569 0.1632)
OKLCH	oklch(97.21% 0.173 109.2)
XYZ	xyz(79.3027, 93.7023, 25.9630)
Luminance	0.9370 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFFF64 #6464FF

analogous

#FFB264 #FFFF64 #B2FF64

triadic

#FFFF64 #64FFFF #FF64FF

tetradic

#FFFF64 #64FFB2 #6464FF #FF64B2

square

#FFFF64 #64FFB2 #6464FF #FF64B2

split-complementary

#FFFF64 #64B2FF #B264FF

monochromatic

#E9E900 #FFFF27 #FFFF64 #FFFFA1 #FFFFDE

Accessibility & contrast

On white

1.06

#FFFF64 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.74

#FFFF64 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFFF64

19.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFFF64	#FFFFFF	#000000	##000000
##FFFF64	1.00	1.06	19.74	19.74
#FFFFFF	1.06	1.00	21.00	21.00
#000000	19.74	21.00	1.00	1.00
##000000	19.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF551

Deuteranopia (green-blind)

#FFFA6E

Tritanopia (blue-blind)

#FFF0DF

Achromatopsia (no color)

#F8F8F8

Design tokens & code

CSS

--color: #ffff64;
/* rgb */ color: rgb(255, 255, 100);
/* oklch */ color: oklch(97.2% 0.173 109.2);

Tailwind

colors: {
  custom: {
    50: '#ffff96',
    500: '#ffff64',
    950: '#000000',
  },
}

SCSS

$custom: #ffff64;
$custom-light: #ffff96;
$custom-dark: #000000;

JSON

{
  "hex": "#ffff64",
  "rgb": {
    "r": 255,
    "g": 255,
    "b": 100
  },
  "hsl": {
    "h": 60,
    "s": 100,
    "l": 69.608
  },
  "oklch": {
    "l": 0.97215,
    "c": 0.17283,
    "h": 109.2
  },
  "luminance": 0.937
}

Semantic roles & 50–950 ramp

primary

#FFFF64

secondary

#2D2DDA

accent

#00E600

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#19170E

muted

#87857F

Preview Lab

Preview with #FFFF64

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

Preview Lab → · Contrast checker → · Palette generator →