#EFF57C#EFF57C

#EFF57C is a very light, vivid yellow. Relative luminance 0.851; OKLCH L 94.1% C 0.145 H 111.4°. Best body text is #000000 at 18.02:1 contrast (WCAG AA passes).

Color values

HEX	#EFF57C
RGB	rgb(239, 245, 124)
HSL	hsl(63, 86%, 72%)
HSV	hsv(63, 49%, 96%)
CMYK	cmyk(2.4%, 0%, 49.4%, 3.9%)
CIE-LAB	lab(93.93, -18.28, 56.97)
CIE-LCH	lch(93.93, 59.84, 107.79°)
OKLab	oklab(94.13% -0.0528 0.1346)
OKLCH	oklch(94.13% 0.145 111.4)
XYZ	xyz(71.8885, 85.1122, 31.7062)
Luminance	0.8511 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF57C #827CF5

analogous

#F5BE7C #EFF57C #B3F57C

triadic

#EFF57C #7CEFF5 #F57CEF

tetradic

#EFF57C #7CF5BE #827CF5 #F57CB3

square

#EFF57C #7CF5BE #827CF5 #F57CB3

split-complementary

#EFF57C #7CB3F5 #BE7CF5

monochromatic

#DBE511 #E8F143 #EFF57C #F6F9B5 #FCFDE3

Accessibility & contrast

On white

1.17

#EFF57C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.02

#EFF57C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF57C

18.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF57C	#FFFFFF	#000000	##000000
##EFF57C	1.00	1.17	18.02	18.02
#FFFFFF	1.17	1.00	21.00	21.00
#000000	18.02	21.00	1.00	1.00
##000000	18.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC71

Deuteranopia (green-blind)

#FFEF82

Tritanopia (blue-blind)

#FCE9D9

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff57c;
/* rgb */ color: rgb(239, 245, 124);
/* oklch */ color: oklch(94.1% 0.145 111.4);

Tailwind

colors: {
  custom: {
    50: '#f6f8a5',
    500: '#eff57c',
    950: '#000000',
  },
}

SCSS

$custom: #eff57c;
$custom-light: #f6f8a5;
$custom-dark: #000000;

JSON

{
  "hex": "#eff57c",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 124
  },
  "hsl": {
    "h": 62.975,
    "s": 85.816,
    "l": 72.353
  },
  "oklch": {
    "l": 0.94133,
    "c": 0.14461,
    "h": 111.4
  },
  "luminance": 0.85111
}

Semantic roles & 50–950 ramp

primary

#EFF57C

secondary

#4C45D1

accent

#03E20E

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF57C

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

Preview Lab → · Contrast checker → · Palette generator →