#EFFF5D#EFFF5D

#EFFF5D is a very light, vivid yellow. Relative luminance 0.907; OKLCH L 95.9% C 0.181 H 114.7°. Best body text is #000000 at 19.13:1 contrast (WCAG AA passes).

Color values

HEX	#EFFF5D
RGB	rgb(239, 255, 93)
HSL	hsl(66, 100%, 68%)
HSV	hsv(66, 64%, 100%)
CMYK	cmyk(6.3%, 0%, 63.5%, 0%)
CIE-LAB	lab(96.27, -25.33, 72.77)
CIE-LCH	lch(96.27, 77.06, 109.19°)
OKLab	oklab(95.91% -0.0757 0.1649)
OKLCH	oklch(95.91% 0.181 114.7)
XYZ	xyz(73.3342, 90.6623, 23.9902)
Luminance	0.9066 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFF5D #6D5DFF

analogous

#FFBE5D #EFFF5D #9EFF5D

triadic

#EFFF5D #5DEFFF #FF5DEF

tetradic

#EFFF5D #5DFFBE #6D5DFF #FF5D9E

square

#EFFF5D #5DFFBE #6D5DFF #FF5D9E

split-complementary

#EFFF5D #5D9EFF #BE5DFF

monochromatic

#CBE200 #E9FF20 #EFFF5D #F5FF9A #FBFFD7

Accessibility & contrast

On white

1.10

#EFFF5D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.13

#EFFF5D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFF5D

19.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFF5D	#FFFFFF	#000000	##000000
##EFFF5D	1.00	1.10	19.13	19.13
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.13	21.00	1.00	1.00
##000000	19.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF347

Deuteranopia (green-blind)

#FFF668

Tritanopia (blue-blind)

#FEF1DE

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #efff5d;
/* rgb */ color: rgb(239, 255, 93);
/* oklch */ color: oklch(95.9% 0.181 114.7);

Tailwind

colors: {
  custom: {
    50: '#f7ff92',
    500: '#efff5d',
    950: '#000000',
  },
}

SCSS

$custom: #efff5d;
$custom-light: #f7ff92;
$custom-dark: #000000;

JSON

{
  "hex": "#efff5d",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 93
  },
  "hsl": {
    "h": 65.926,
    "s": 100,
    "l": 68.235
  },
  "oklch": {
    "l": 0.95913,
    "c": 0.18144,
    "h": 114.7
  },
  "luminance": 0.90661
}

Semantic roles & 50–950 ramp

primary

#EFFF5D

secondary

#3927D9

accent

#00E617

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFFF5D

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

Preview Lab → · Contrast checker → · Palette generator →