#EFFC61#EFFC61

#EFFC61 is a very light, vivid yellow. Relative luminance 0.888; OKLCH L 95.3% C 0.175 H 113.8°. Best body text is #000000 at 18.77:1 contrast (WCAG AA passes).

Color values

HEX#EFFC61
RGBrgb(239, 252, 97)
HSLhsl(65, 96%, 68%)
HSVhsv(65, 62%, 99%)
CMYKcmyk(5.2%, 0%, 61.5%, 1.2%)
CIE-LABlab(95.51, -23.67, 70.40)
CIE-LCHlch(95.51, 74.27, 108.58°)
OKLaboklab(95.32% -0.0707 0.1604)
OKLCHoklch(95.32% 0.175 113.8)
XYZxyz(72.5665, 88.8359, 24.6313)
Luminance0.8883 (WCAG relative)
Temperaturewarm
Familyyellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#EFFC61 #6E61FC
analogous
#FCBB61 #EFFC61 #A1FC61
triadic
#EFFC61 #61EFFC #FC61EF
tetradic
#EFFC61 #61FCBB #6E61FC #FC61A1
square
#EFFC61 #61FCBB #6E61FC #FC61A1
split-complementary
#EFFC61 #61A1FC #BB61FC
monochromatic
#CCDE04 #E9FB25 #EFFC61 #F5FD9D #FBFED9

Accessibility & contrast

On white

1.12
#EFFC61 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

18.77
#EFFC61 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFC61
18.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##EFFC61#FFFFFF#000000##000000
##EFFC611.001.1218.7718.77
#FFFFFF1.121.0021.0021.00
#00000018.7721.001.001.00
##00000018.7721.001.001.00

Color blindness preview

Protanopia (red-blind)
#FFF14E
Deuteranopia (green-blind)
#FFF46B
Tritanopia (blue-blind)
#FEEEDC
Achromatopsia (no color)
#F2F2F2

Design tokens & code

CSS
--color: #effc61;
/* rgb */ color: rgb(239, 252, 97);
/* oklch */ color: oklch(95.3% 0.175 113.8);
Tailwind
colors: {
  custom: {
    50: '#f7fd94',
    500: '#effc61',
    950: '#000000',
  },
}
SCSS
$custom: #effc61;
$custom-light: #f7fd94;
$custom-dark: #000000;
JSON
{
  "hex": "#effc61",
  "rgb": {
    "r": 239,
    "g": 252,
    "b": 97
  },
  "hsl": {
    "h": 65.032,
    "s": 96.273,
    "l": 68.431
  },
  "oklch": {
    "l": 0.95315,
    "c": 0.1753,
    "h": 113.8
  },
  "luminance": 0.88835
}

Semantic roles & 50–950 ramp

primary
#EFFC61
secondary
#3A2BD6
accent
#00E613
background
#FFFFFC
surface
#FFFFF5
border
#D7D7CF
text
#18170E
muted
#86857F

Preview Lab

Preview with #EFFC61

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

Preview Lab → · Contrast checker → · Palette generator →

#EFFC61 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva