#EFFA4C#EFFA4C

#EFFA4C is a very light, vivid yellow. Relative luminance 0.872; OKLCH L 94.7% C 0.187 H 113.0°. Best body text is #000000 at 18.45:1 contrast (WCAG AA passes).

Color values

HEX#EFFA4C
RGBrgb(239, 250, 76)
HSLhsl(64, 95%, 64%)
HSVhsv(64, 70%, 98%)
CMYKcmyk(4.4%, 0%, 69.6%, 2%)
CIE-LABlab(94.84, -23.91, 77.55)
CIE-LCHlch(94.84, 81.15, 107.13°)
OKLaboklab(94.73% -0.0733 0.1724)
OKLCHoklch(94.73% 0.187 113)
XYZxyz(71.0888, 87.2453, 19.9313)
Luminance0.8724 (WCAG relative)
Temperaturewarm
Familyyellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#EFFA4C #574CFA
analogous
#FAAE4C #EFFA4C #98FA4C
triadic
#EFFA4C #4CEFFA #FA4CEF
tetradic
#EFFA4C #4CFAAE #574CFA #FA4C98
square
#EFFA4C #4CFAAE #574CFA #FA4C98
split-complementary
#EFFA4C #4C98FA #AE4CFA
monochromatic
#BAC606 #EAF810 #EFFA4C #F4FC88 #FAFDC3

Accessibility & contrast

On white

1.14
#EFFA4C on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

18.45
#EFFA4C on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFA4C
18.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##EFFA4C#FFFFFF#000000##000000
##EFFA4C1.001.1418.4518.45
#FFFFFF1.141.0021.0021.00
#00000018.4521.001.001.00
##00000018.4521.001.001.00

Color blindness preview

Protanopia (red-blind)
#FFEE2D
Deuteranopia (green-blind)
#FFF259
Tritanopia (blue-blind)
#FFEBD8
Achromatopsia (no color)
#F0F0F0

Design tokens & code

CSS
--color: #effa4c;
/* rgb */ color: rgb(239, 250, 76);
/* oklch */ color: oklch(94.7% 0.187 113.0);
Tailwind
colors: {
  custom: {
    50: '#f8fb89',
    500: '#effa4c',
    950: '#000000',
  },
}
SCSS
$custom: #effa4c;
$custom-light: #f8fb89;
$custom-dark: #000000;
JSON
{
  "hex": "#effa4c",
  "rgb": {
    "r": 239,
    "g": 250,
    "b": 76
  },
  "hsl": {
    "h": 63.793,
    "s": 94.565,
    "l": 63.922
  },
  "oklch": {
    "l": 0.94733,
    "c": 0.18732,
    "h": 113
  },
  "luminance": 0.87244
}

Semantic roles & 50–950 ramp

primary
#EFFA4C
secondary
#3128C3
accent
#00E60F
background
#FFFFFC
surface
#FFFFF4
border
#D7D7CE
text
#18170C
muted
#86857F

Preview Lab

Preview with #EFFA4C

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

Preview Lab → · Contrast checker → · Palette generator →

#EFFA4C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva