#EFFF44#EFFF44

#EFFF44 is a very light, vivid yellow. Relative luminance 0.903; OKLCH L 95.7% C 0.197 H 114.5°. Best body text is #000000 at 19.06:1 contrast (WCAG AA passes).

Color values

HEX	#EFFF44
RGB	rgb(239, 255, 68)
HSL	hsl(65, 100%, 63%)
HSV	hsv(65, 73%, 100%)
CMYK	cmyk(6.3%, 0%, 73.3%, 0%)
CIE-LAB	lab(96.12, -26.62, 81.38)
CIE-LCH	lch(96.12, 85.63, 108.11°)
OKLab	oklab(95.74% -0.0816 0.1792)
OKLCH	oklch(95.74% 0.197 114.5)
XYZ	xyz(72.4021, 90.2894, 19.0813)
Luminance	0.9029 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFF44 #5444FF

analogous

#FFB244 #EFFF44 #91FF44

triadic

#EFFF44 #44EFFF #FF44EF

tetradic

#EFFF44 #44FFB2 #5444FF #FF4491

square

#EFFF44 #44FFB2 #5444FF #FF4491

split-complementary

#EFFF44 #4491FF #B244FF

monochromatic

#B7C900 #EAFF07 #EFFF44 #F4FF81 #F9FFBE

Accessibility & contrast

On white

1.10

#EFFF44 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.06

#EFFF44 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFF44

19.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFF44	#FFFFFF	#000000	##000000
##EFFF44	1.00	1.10	19.06	19.06
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.06	21.00	1.00	1.00
##000000	19.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF218

Deuteranopia (green-blind)

#FFF554

Tritanopia (blue-blind)

#FFF0DC

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #efff44;
/* rgb */ color: rgb(239, 255, 68);
/* oklch */ color: oklch(95.7% 0.197 114.5);

Tailwind

colors: {
  custom: {
    50: '#f8ff85',
    500: '#efff44',
    950: '#000000',
  },
}

SCSS

$custom: #efff44;
$custom-light: #f8ff85;
$custom-dark: #000000;

JSON

{
  "hex": "#efff44",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 68
  },
  "hsl": {
    "h": 65.134,
    "s": 100,
    "l": 63.333
  },
  "oklch": {
    "l": 0.9574,
    "c": 0.19685,
    "h": 114.5
  },
  "luminance": 0.90288
}

Semantic roles & 50–950 ramp

primary

#EFFF44

secondary

#3123C5

accent

#00E614

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170C

muted

#86857F

Preview Lab

Preview with #EFFF44

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

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