#EFF389#EFF389

#EFF389 is a very light, vivid yellow. Relative luminance 0.843; OKLCH L 93.9% C 0.129 H 110.5°. Best body text is #000000 at 17.85:1 contrast (WCAG AA passes).

Color values

HEX	#EFF389
RGB	rgb(239, 243, 137)
HSL	hsl(62, 82%, 75%)
HSV	hsv(62, 44%, 95%)
CMYK	cmyk(1.6%, 0%, 43.6%, 4.7%)
CIE-LAB	lab(93.56, -16.12, 50.45)
CIE-LCH	lch(93.56, 52.96, 107.72°)
OKLab	oklab(93.89% -0.0454 0.1212)
OKLCH	oklch(93.89% 0.129 110.5)
XYZ	xyz(72.1637, 84.2594, 36.1243)
Luminance	0.8426 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF389 #8D89F3

analogous

#F3C289 #EFF389 #BAF389

triadic

#EFF389 #89EFF3 #F389EF

tetradic

#EFF389 #89F3C2 #8D89F3 #F389BA

square

#EFF389 #89F3C2 #8D89F3 #F389BA

split-complementary

#EFF389 #89BAF3 #C289F3

monochromatic

#E0E81A #E7ED51 #EFF389 #F7F9C1 #FBFCE3

Accessibility & contrast

On white

1.18

#EFF389 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.85

#EFF389 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF389

17.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF389	#FFFFFF	#000000	##000000
##EFF389	1.00	1.18	17.85	17.85
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.85	21.00	1.00	1.00
##000000	17.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB80

Deuteranopia (green-blind)

#FFEE8E

Tritanopia (blue-blind)

#FCE8DA

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff389;
/* rgb */ color: rgb(239, 243, 137);
/* oklch */ color: oklch(93.9% 0.129 110.5);

Tailwind

colors: {
  custom: {
    50: '#f6f7ad',
    500: '#eff389',
    950: '#000000',
  },
}

SCSS

$custom: #eff389;
$custom-light: #f6f7ad;
$custom-dark: #000000;

JSON

{
  "hex": "#eff389",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 137
  },
  "hsl": {
    "h": 62.264,
    "s": 81.538,
    "l": 74.51
  },
  "oklch": {
    "l": 0.93888,
    "c": 0.12945,
    "h": 110.5
  },
  "luminance": 0.84258
}

Semantic roles & 50–950 ramp

primary

#EFF389

secondary

#5651CF

accent

#08DE10

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF389

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

Preview Lab → · Contrast checker → · Palette generator →