#EFF58C#EFF58C

#EFF58C is a very light, vivid yellow. Relative luminance 0.855; OKLCH L 94.3% C 0.129 H 111.5°. Best body text is #000000 at 18.11:1 contrast (WCAG AA passes).

Color values

HEX	#EFF58C
RGB	rgb(239, 245, 140)
HSL	hsl(63, 84%, 75%)
HSV	hsv(63, 43%, 96%)
CMYK	cmyk(2.4%, 0%, 42.9%, 3.9%)
CIE-LAB	lab(94.12, -16.79, 49.70)
CIE-LCH	lch(94.12, 52.46, 108.67°)
OKLab	oklab(94.34% -0.0471 0.1198)
OKLCH	oklch(94.34% 0.129 111.5)
XYZ	xyz(72.9837, 85.5503, 37.4740)
Luminance	0.8555 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF58C #928CF5

analogous

#F5C78C #EFF58C #BAF58C

triadic

#EFF58C #8CEFF5 #F58CEF

tetradic

#EFF58C #8CF5C7 #928CF5 #F58CBA

square

#EFF58C #8CF5C7 #928CF5 #F58CBA

split-complementary

#EFF58C #8CBAF5 #C78CF5

monochromatic

#DFEB1B #E7F054 #EFF58C #F7FAC4 #FBFDE3

Accessibility & contrast

On white

1.16

#EFF58C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.11

#EFF58C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF58C

18.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF58C	#FFFFFF	#000000	##000000
##EFF58C	1.00	1.16	18.11	18.11
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.11	21.00	1.00	1.00
##000000	18.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC83

Deuteranopia (green-blind)

#FFF091

Tritanopia (blue-blind)

#FBEADC

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff58c;
/* rgb */ color: rgb(239, 245, 140);
/* oklch */ color: oklch(94.3% 0.129 111.5);

Tailwind

colors: {
  custom: {
    50: '#f6f8af',
    500: '#eff58c',
    950: '#000000',
  },
}

SCSS

$custom: #eff58c;
$custom-light: #f6f8af;
$custom-dark: #000000;

JSON

{
  "hex": "#eff58c",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 140
  },
  "hsl": {
    "h": 63.429,
    "s": 84,
    "l": 75.49
  },
  "oklch": {
    "l": 0.94344,
    "c": 0.12868,
    "h": 111.5
  },
  "luminance": 0.85549
}

Semantic roles & 50–950 ramp

primary

#EFF58C

secondary

#5A53D2

accent

#05E012

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF58C

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

Preview Lab → · Contrast checker → · Palette generator →