#EFFF78#EFFF78

#EFFF78 is a very light, vivid yellow. Relative luminance 0.912; OKLCH L 96.2% C 0.160 H 115.1°. Best body text is #000000 at 19.25:1 contrast (WCAG AA passes).

Color values

HEX	#EFFF78
RGB	rgb(239, 255, 120)
HSL	hsl(67, 100%, 74%)
HSV	hsv(67, 53%, 100%)
CMYK	cmyk(6.3%, 0%, 52.9%, 0%)
CIE-LAB	lab(96.50, -23.41, 61.78)
CIE-LCH	lch(96.50, 66.07, 110.75°)
OKLab	oklab(96.17% -0.0677 0.1447)
OKLCH	oklch(96.17% 0.16 115.1)
XYZ	xyz(74.7481, 91.2278, 31.4367)
Luminance	0.9123 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFF78 #8878FF

analogous

#FFCB78 #EFFF78 #ABFF78

triadic

#EFFF78 #78EFFF #FF78EF

tetradic

#EFFF78 #78FFCB #8878FF #FF78AB

square

#EFFF78 #78FFCB #8878FF #FF78AB

split-complementary

#EFFF78 #78ABFF #CB78FF

monochromatic

#DFFD00 #E8FF3B #EFFF78 #F6FFB5 #FBFFE0

Accessibility & contrast

On white

1.09

#EFFF78 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.25

#EFFF78 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFF78

19.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFF78	#FFFFFF	#000000	##000000
##EFFF78	1.00	1.09	19.25	19.25
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.25	21.00	1.00	1.00
##000000	19.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF46B

Deuteranopia (green-blind)

#FFF680

Tritanopia (blue-blind)

#FCF2E1

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #efff78;
/* rgb */ color: rgb(239, 255, 120);
/* oklch */ color: oklch(96.2% 0.160 115.1);

Tailwind

colors: {
  custom: {
    50: '#f7ffa3',
    500: '#efff78',
    950: '#000000',
  },
}

SCSS

$custom: #efff78;
$custom-light: #f7ffa3;
$custom-dark: #000000;

JSON

{
  "hex": "#efff78",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 120
  },
  "hsl": {
    "h": 67.111,
    "s": 100,
    "l": 73.529
  },
  "oklch": {
    "l": 0.96174,
    "c": 0.15975,
    "h": 115.1
  },
  "luminance": 0.91227
}

Semantic roles & 50–950 ramp

primary

#EFFF78

secondary

#513EDD

accent

#00E61B

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFFF78

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

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