#EFF58D#EFF58D

#EFF58D is a very light, vivid yellow. Relative luminance 0.856; OKLCH L 94.4% C 0.128 H 111.5°. Best body text is #000000 at 18.12:1 contrast (WCAG AA passes).

Color values

HEX	#EFF58D
RGB	rgb(239, 245, 141)
HSL	hsl(63, 84%, 76%)
HSV	hsv(63, 42%, 96%)
CMYK	cmyk(2.4%, 0%, 42.4%, 3.9%)
CIE-LAB	lab(94.13, -16.69, 49.24)
CIE-LCH	lch(94.13, 51.99, 108.73°)
OKLab	oklab(94.36% -0.0467 0.1188)
OKLCH	oklch(94.36% 0.128 111.5)
XYZ	xyz(73.0578, 85.5799, 37.8641)
Luminance	0.8558 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF58D #938DF5

analogous

#F5C78D #EFF58D #BBF58D

triadic

#EFF58D #8DEFF5 #F58DEF

tetradic

#EFF58D #8DF5C7 #938DF5 #F58DBB

square

#EFF58D #8DF5C7 #938DF5 #F58DBB

split-complementary

#EFF58D #8DBBF5 #C78DF5

monochromatic

#DFEB1C #E7F055 #EFF58D #F7FAC5 #FBFDE3

Accessibility & contrast

On white

1.16

#EFF58D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.12

#EFF58D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF58D

18.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF58D	#FFFFFF	#000000	##000000
##EFF58D	1.00	1.16	18.12	18.12
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.12	21.00	1.00	1.00
##000000	18.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED85

Deuteranopia (green-blind)

#FFF092

Tritanopia (blue-blind)

#FBEADC

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff58d;
/* rgb */ color: rgb(239, 245, 141);
/* oklch */ color: oklch(94.4% 0.128 111.5);

Tailwind

colors: {
  custom: {
    50: '#f6f8b0',
    500: '#eff58d',
    950: '#000000',
  },
}

SCSS

$custom: #eff58d;
$custom-light: #f6f8b0;
$custom-dark: #000000;

JSON

{
  "hex": "#eff58d",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 141
  },
  "hsl": {
    "h": 63.462,
    "s": 83.871,
    "l": 75.686
  },
  "oklch": {
    "l": 0.94358,
    "c": 0.12765,
    "h": 111.5
  },
  "luminance": 0.85579
}

Semantic roles & 50–950 ramp

primary

#EFF58D

secondary

#5B54D2

accent

#05E012

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171711

muted

#858581

Preview Lab

Preview with #EFF58D

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

Preview Lab → · Contrast checker → · Palette generator →