#EFFD78#EFFD78

#EFFD78 is a very light, vivid yellow. Relative luminance 0.900; OKLCH L 95.8% C 0.157 H 114.4°. Best body text is #000000 at 18.99:1 contrast (WCAG AA passes).

Color values

HEX	#EFFD78
RGB	rgb(239, 253, 120)
HSL	hsl(66, 97%, 73%)
HSV	hsv(66, 53%, 99%)
CMYK	cmyk(5.5%, 0%, 52.6%, 0.8%)
CIE-LAB	lab(95.98, -22.46, 61.18)
CIE-LCH	lch(95.98, 65.17, 110.16°)
OKLab	oklab(95.76% -0.065 0.1434)
OKLCH	oklch(95.76% 0.157 114.4)
XYZ	xyz(74.1134, 89.9585, 31.2251)
Luminance	0.8996 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFD78 #8678FD

analogous

#FDC878 #EFFD78 #ACFD78

triadic

#EFFD78 #78EFFD #FD78EF

tetradic

#EFFD78 #78FDC8 #8678FD #FD78AC

square

#EFFD78 #78FDC8 #8678FD #FD78AC

split-complementary

#EFFD78 #78ACFD #C878FD

monochromatic

#DDF704 #E8FC3C #EFFD78 #F6FEB4 #FBFFE1

Accessibility & contrast

On white

1.11

#EFFD78 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.99

#EFFD78 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFD78

18.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFD78	#FFFFFF	#000000	##000000
##EFFD78	1.00	1.11	18.99	18.99
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.99	21.00	1.00	1.00
##000000	18.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF26B

Deuteranopia (green-blind)

#FFF57F

Tritanopia (blue-blind)

#FCF0DF

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #effd78;
/* rgb */ color: rgb(239, 253, 120);
/* oklch */ color: oklch(95.8% 0.157 114.4);

Tailwind

colors: {
  custom: {
    50: '#f6fea2',
    500: '#effd78',
    950: '#000000',
  },
}

SCSS

$custom: #effd78;
$custom-light: #f6fea2;
$custom-dark: #000000;

JSON

{
  "hex": "#effd78",
  "rgb": {
    "r": 239,
    "g": 253,
    "b": 120
  },
  "hsl": {
    "h": 66.316,
    "s": 97.08,
    "l": 73.137
  },
  "oklch": {
    "l": 0.95755,
    "c": 0.15743,
    "h": 114.4
  },
  "luminance": 0.89957
}

Semantic roles & 50–950 ramp

primary

#EFFD78

secondary

#4F3FDA

accent

#00E618

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFFD78

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

Preview Lab → · Contrast checker → · Palette generator →