#EFF381#EFF381

#EFF381 is a very light, vivid yellow. Relative luminance 0.840; OKLCH L 93.8% C 0.138 H 110.6°. Best body text is #000000 at 17.81:1 contrast (WCAG AA passes).

Color values

HEX	#EFF381
RGB	rgb(239, 243, 129)
HSL	hsl(62, 83%, 73%)
HSV	hsv(62, 47%, 95%)
CMYK	cmyk(1.6%, 0%, 46.9%, 4.7%)
CIE-LAB	lab(93.47, -16.87, 54.10)
CIE-LCH	lch(93.47, 56.67, 107.32°)
OKLab	oklab(93.78% -0.0483 0.1288)
OKLCH	oklch(93.78% 0.138 110.6)
XYZ	xyz(71.6110, 84.0383, 33.2133)
Luminance	0.8404 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF381 #8581F3

analogous

#F3BE81 #EFF381 #B6F381

triadic

#EFF381 #81EFF3 #F381EF

tetradic

#EFF381 #81F3BE #8581F3 #F381B6

square

#EFF381 #81F3BE #8581F3 #F381B6

split-complementary

#EFF381 #81B6F3 #BE81F3

monochromatic

#DDE416 #E8EE49 #EFF381 #F6F8B9 #FBFCE3

Accessibility & contrast

On white

1.18

#EFF381 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.81

#EFF381 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF381

17.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF381	#FFFFFF	#000000	##000000
##EFF381	1.00	1.18	17.81	17.81
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.81	21.00	1.00	1.00
##000000	17.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA77

Deuteranopia (green-blind)

#FFEE87

Tritanopia (blue-blind)

#FCE7D9

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff381;
/* rgb */ color: rgb(239, 243, 129);
/* oklch */ color: oklch(93.8% 0.138 110.6);

Tailwind

colors: {
  custom: {
    50: '#f6f6a8',
    500: '#eff381',
    950: '#000000',
  },
}

SCSS

$custom: #eff381;
$custom-light: #f6f6a8;
$custom-dark: #000000;

JSON

{
  "hex": "#eff381",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 129
  },
  "hsl": {
    "h": 62.105,
    "s": 82.609,
    "l": 72.941
  },
  "oklch": {
    "l": 0.93781,
    "c": 0.13751,
    "h": 110.6
  },
  "luminance": 0.84037
}

Semantic roles & 50–950 ramp

primary

#EFF381

secondary

#4E4ACF

accent

#06DF0E

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF381

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

Preview Lab → · Contrast checker → · Palette generator →