#EFF99C#EFF99C

#EFF99C is a very light, moderate yellow. Relative luminance 0.885; OKLCH L 95.4% C 0.116 H 113.6°. Best body text is #000000 at 18.70:1 contrast (WCAG AA passes).

Color values

HEX	#EFF99C
RGB	rgb(239, 249, 156)
HSL	hsl(66, 89%, 79%)
HSV	hsv(66, 37%, 98%)
CMYK	cmyk(4%, 0%, 37.3%, 2.4%)
CIE-LAB	lab(95.37, -17.05, 43.54)
CIE-LCH	lch(95.37, 46.76, 111.38°)
OKLab	oklab(95.41% -0.0466 0.1066)
OKLCH	oklch(95.41% 0.116 113.6)
XYZ	xyz(75.4736, 88.5033, 44.5530)
Luminance	0.8850 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF99C #A69CF9

analogous

#F9D59C #EFF99C #C1F99C

triadic

#EFF99C #9CEFF9 #F99CEF

tetradic

#EFF99C #9CF9D5 #A69CF9 #F99CC1

square

#EFF99C #9CF9D5 #A69CF9 #F99CC1

split-complementary

#EFF99C #9CC1F9 #D59CF9

monochromatic

#DCF229 #E6F662 #EFF99C #F8FCD6 #FAFDE2

Accessibility & contrast

On white

1.12

#EFF99C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.70

#EFF99C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF99C

18.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF99C	#FFFFFF	#000000	##000000
##EFF99C	1.00	1.12	18.70	18.70
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.70	21.00	1.00	1.00
##000000	18.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF195

Deuteranopia (green-blind)

#FFF3A0

Tritanopia (blue-blind)

#F9EFE2

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #eff99c;
/* rgb */ color: rgb(239, 249, 156);
/* oklch */ color: oklch(95.4% 0.116 113.6);

Tailwind

colors: {
  custom: {
    50: '#f5fbba',
    500: '#eff99c',
    950: '#000000',
  },
}

SCSS

$custom: #eff99c;
$custom-light: #f5fbba;
$custom-dark: #000000;

JSON

{
  "hex": "#eff99c",
  "rgb": {
    "r": 239,
    "g": 249,
    "b": 156
  },
  "hsl": {
    "h": 66.452,
    "s": 88.571,
    "l": 79.412
  },
  "oklch": {
    "l": 0.95412,
    "c": 0.1164,
    "h": 113.6
  },
  "luminance": 0.88502
}

Semantic roles & 50–950 ramp

primary

#EFF99C

secondary

#6D60DA

accent

#00E519

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#171712

muted

#858582

Preview Lab

Preview with #EFF99C

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

Preview Lab → · Contrast checker → · Palette generator →