#EFF58F#EFF58F

#EFF58F is a very light, vivid yellow. Relative luminance 0.856; OKLCH L 94.4% C 0.126 H 111.5°. Best body text is #000000 at 18.13:1 contrast (WCAG AA passes).

Color values

HEX	#EFF58F
RGB	rgb(239, 245, 143)
HSL	hsl(64, 84%, 76%)
HSV	hsv(64, 42%, 96%)
CMYK	cmyk(2.4%, 0%, 41.6%, 3.9%)
CIE-LAB	lab(94.16, -16.49, 48.31)
CIE-LCH	lch(94.16, 51.05, 108.85°)
OKLab	oklab(94.39% -0.046 0.1168)
OKLCH	oklch(94.39% 0.126 111.5)
XYZ	xyz(73.2079, 85.6399, 38.6549)
Luminance	0.8564 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF58F #958FF5

analogous

#F5C88F #EFF58F #BCF58F

triadic

#EFF58F #8FEFF5 #F58FEF

tetradic

#EFF58F #8FF5C8 #958FF5 #F58FBC

square

#EFF58F #8FF5C8 #958FF5 #F58FBC

split-complementary

#EFF58F #8FBCF5 #C88FF5

monochromatic

#DFEB1F #E7F057 #EFF58F #F7FAC7 #FBFCE3

Accessibility & contrast

On white

1.16

#EFF58F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.13

#EFF58F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF58F

18.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF58F	#FFFFFF	#000000	##000000
##EFF58F	1.00	1.16	18.13	18.13
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.13	21.00	1.00	1.00
##000000	18.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED87

Deuteranopia (green-blind)

#FFF094

Tritanopia (blue-blind)

#FBEADC

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff58f;
/* rgb */ color: rgb(239, 245, 143);
/* oklch */ color: oklch(94.4% 0.126 111.5);

Tailwind

colors: {
  custom: {
    50: '#f6f8b1',
    500: '#eff58f',
    950: '#000000',
  },
}

SCSS

$custom: #eff58f;
$custom-light: #f6f8b1;
$custom-dark: #000000;

JSON

{
  "hex": "#eff58f",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 143
  },
  "hsl": {
    "h": 63.529,
    "s": 83.607,
    "l": 76.078
  },
  "oklch": {
    "l": 0.94387,
    "c": 0.12554,
    "h": 111.5
  },
  "luminance": 0.85639
}

Semantic roles & 50–950 ramp

primary

#EFF58F

secondary

#5D56D3

accent

#05E012

background

#FFFFFD

surface

#FFFEF8

border

#D7D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFF58F

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

Preview Lab → · Contrast checker → · Palette generator →