#EFFB78#EFFB78

#EFFB78 is a very light, vivid yellow. Relative luminance 0.887; OKLCH L 95.3% C 0.155 H 113.7°. Best body text is #000000 at 18.74:1 contrast (WCAG AA passes).

Color values

HEX	#EFFB78
RGB	rgb(239, 251, 120)
HSL	hsl(65, 94%, 73%)
HSV	hsv(65, 52%, 98%)
CMYK	cmyk(4.8%, 0%, 52.2%, 1.6%)
CIE-LAB	lab(95.46, -21.51, 60.57)
CIE-LCH	lch(95.46, 64.28, 109.55°)
OKLab	oklab(95.34% -0.0623 0.1421)
OKLCH	oklch(95.34% 0.155 113.7)
XYZ	xyz(73.4853, 88.7024, 31.0158)
Luminance	0.8870 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFB78 #8478FB

analogous

#FBC578 #EFFB78 #AEFB78

triadic

#EFFB78 #78EFFB #FB78EF

tetradic

#EFFB78 #78FBC5 #8478FB #FB78AE

square

#EFFB78 #78FBC5 #8478FB #FB78AE

split-complementary

#EFFB78 #78AEFB #C578FB

monochromatic

#DCF107 #E8F93D #EFFB78 #F6FDB3 #FBFEE1

Accessibility & contrast

On white

1.12

#EFFB78 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.74

#EFFB78 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFB78

18.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFB78	#FFFFFF	#000000	##000000
##EFFB78	1.00	1.12	18.74	18.74
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.74	21.00	1.00	1.00
##000000	18.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF16B

Deuteranopia (green-blind)

#FFF37F

Tritanopia (blue-blind)

#FCEEDE

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #effb78;
/* rgb */ color: rgb(239, 251, 120);
/* oklch */ color: oklch(95.3% 0.155 113.7);

Tailwind

colors: {
  custom: {
    50: '#f6fca2',
    500: '#effb78',
    950: '#000000',
  },
}

SCSS

$custom: #effb78;
$custom-light: #f6fca2;
$custom-dark: #000000;

JSON

{
  "hex": "#effb78",
  "rgb": {
    "r": 239,
    "g": 251,
    "b": 120
  },
  "hsl": {
    "h": 65.496,
    "s": 94.245,
    "l": 72.745
  },
  "oklch": {
    "l": 0.95337,
    "c": 0.15514,
    "h": 113.7
  },
  "luminance": 0.88701
}

Semantic roles & 50–950 ramp

primary

#EFFB78

secondary

#4D3FD8

accent

#00E615

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFFB78

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

Preview Lab → · Contrast checker → · Palette generator →