#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
RGB	rgb(239, 252, 97)
HSL	hsl(65, 96%, 68%)
HSV	hsv(65, 62%, 99%)
CMYK	cmyk(5.2%, 0%, 61.5%, 1.2%)
CIE-LAB	lab(95.51, -23.67, 70.40)
CIE-LCH	lch(95.51, 74.27, 108.58°)
OKLab	oklab(95.32% -0.0707 0.1604)
OKLCH	oklch(95.32% 0.175 113.8)
XYZ	xyz(72.5665, 88.8359, 24.6313)
Luminance	0.8883 (WCAG relative)
Temperature	warm
Family	yellow

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
##EFFC61	1.00	1.12	18.77	18.77
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.77	21.00	1.00	1.00
##000000	18.77	21.00	1.00	1.00

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 →