#FFEF64#FFEF64

#FFEF64 is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 94.0% C 0.158 H 102.8°. Best body text is #000000 at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#FFEF64
RGB	rgb(255, 239, 100)
HSL	hsl(54, 100%, 70%)
HSV	hsv(54, 61%, 100%)
CMYK	cmyk(0%, 6.3%, 60.8%, 0%)
CIE-LAB	lab(93.41, -10.79, 67.28)
CIE-LCH	lch(93.41, 68.14, 99.11°)
OKLab	oklab(93.95% -0.0348 0.1538)
OKLCH	oklch(93.95% 0.158 102.8)
XYZ	xyz(74.4095, 83.9159, 24.3320)
Luminance	0.8391 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFEF64 #6474FF

analogous

#FFA164 #FFEF64 #C2FF64

triadic

#FFEF64 #64FFEF #EF64FF

tetradic

#FFEF64 #64FFA1 #6474FF #FF64C2

square

#FFEF64 #64FFA1 #6474FF #FF64C2

split-complementary

#FFEF64 #64C2FF #A164FF

monochromatic

#E9D100 #FFE927 #FFEF64 #FFF5A1 #FFFCDE

Accessibility & contrast

On white

1.18

#FFEF64 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.78

#FFEF64 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFEF64

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFEF64	#FFFFFF	#000000	##000000
##FFEF64	1.00	1.18	17.78	17.78
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.78	21.00	1.00	1.00
##000000	17.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE854

Deuteranopia (green-blind)

#FFEF6C

Tritanopia (blue-blind)

#FFE0D1

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ffef64;
/* rgb */ color: rgb(255, 239, 100);
/* oklch */ color: oklch(94.0% 0.158 102.8);

Tailwind

colors: {
  custom: {
    50: '#fff495',
    500: '#ffef64',
    950: '#000000',
  },
}

SCSS

$custom: #ffef64;
$custom-light: #fff495;
$custom-dark: #000000;

JSON

{
  "hex": "#ffef64",
  "rgb": {
    "r": 255,
    "g": 239,
    "b": 100
  },
  "hsl": {
    "h": 53.806,
    "s": 100,
    "l": 69.608
  },
  "oklch": {
    "l": 0.93952,
    "c": 0.15774,
    "h": 102.8
  },
  "luminance": 0.83913
}

Semantic roles & 50–950 ramp

primary

#FFEF64

secondary

#2D3FDA

accent

#18E600

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#19170E

muted

#87857F

Preview Lab

Preview with #FFEF64

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

Preview Lab → · Contrast checker → · Palette generator →