#EFF978#EFF978

#EFF978 is a very light, vivid yellow. Relative luminance 0.875; OKLCH L 94.9% C 0.153 H 113.0°. Best body text is #000000 at 18.49:1 contrast (WCAG AA passes).

Color values

HEX	#EFF978
RGB	rgb(239, 249, 120)
HSL	hsl(65, 91%, 72%)
HSV	hsv(65, 52%, 98%)
CMYK	cmyk(4%, 0%, 51.8%, 2.4%)
CIE-LAB	lab(94.93, -20.55, 59.96)
CIE-LCH	lch(94.93, 63.39, 108.92°)
OKLab	oklab(94.92% -0.0596 0.1408)
OKLCH	oklch(94.92% 0.153 113)
XYZ	xyz(72.8639, 87.4594, 30.8086)
Luminance	0.8746 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF978 #8278F9

analogous

#F9C278 #EFF978 #AFF978

triadic

#EFF978 #78EFF9 #F978EF

tetradic

#EFF978 #78F9C2 #8278F9 #F978AF

square

#EFF978 #78F9C2 #8278F9 #F978AF

split-complementary

#EFF978 #78AFF9 #C278F9

monochromatic

#DBEC0A #E8F63D #EFF978 #F6FCB3 #FCFEE2

Accessibility & contrast

On white

1.14

#EFF978 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.49

#EFF978 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF978

18.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF978	#FFFFFF	#000000	##000000
##EFF978	1.00	1.14	18.49	18.49
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.49	21.00	1.00	1.00
##000000	18.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF6C

Deuteranopia (green-blind)

#FFF27F

Tritanopia (blue-blind)

#FCECDC

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #eff978;
/* rgb */ color: rgb(239, 249, 120);
/* oklch */ color: oklch(94.9% 0.153 113.0);

Tailwind

colors: {
  custom: {
    50: '#f6fba2',
    500: '#eff978',
    950: '#000000',
  },
}

SCSS

$custom: #eff978;
$custom-light: #f6fba2;
$custom-dark: #000000;

JSON

{
  "hex": "#eff978",
  "rgb": {
    "r": 239,
    "g": 249,
    "b": 120
  },
  "hsl": {
    "h": 64.651,
    "s": 91.489,
    "l": 72.353
  },
  "oklch": {
    "l": 0.94919,
    "c": 0.15286,
    "h": 113
  },
  "luminance": 0.87458
}

Semantic roles & 50–950 ramp

primary

#EFF978

secondary

#4C40D5

accent

#00E612

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF978

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

Preview Lab → · Contrast checker → · Palette generator →