#EFFC91#EFFC91

#EFFC91 is a very light, vivid yellow. Relative luminance 0.900; OKLCH L 95.9% C 0.132 H 114.6°. Best body text is #000000 at 19.00:1 contrast (WCAG AA passes).

Color values

HEX	#EFFC91
RGB	rgb(239, 252, 145)
HSL	hsl(67, 95%, 78%)
HSV	hsv(67, 42%, 99%)
CMYK	cmyk(5.2%, 0%, 42.5%, 1.2%)
CIE-LAB	lab(96.00, -19.67, 49.66)
CIE-LCH	lch(96.00, 53.41, 111.61°)
OKLab	oklab(95.87% -0.0549 0.12)
OKLCH	oklch(95.87% 0.132 114.6)
XYZ	xyz(75.5186, 90.0168, 40.1792)
Luminance	0.9002 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFC91 #9E91FC

analogous

#FCD491 #EFFC91 #B9FC91

triadic

#EFFC91 #91EFFC #FC91EF

tetradic

#EFFC91 #91FCD4 #9E91FC #FC91B9

square

#EFFC91 #91FCD4 #9E91FC #FC91B9

split-complementary

#EFFC91 #91B9FC #D491FC

monochromatic

#DEF91A #E6FA55 #EFFC91 #F8FECD #FBFEE1

Accessibility & contrast

On white

1.11

#EFFC91 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.00

#EFFC91 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFC91

19.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFC91	#FFFFFF	#000000	##000000
##EFFC91	1.00	1.11	19.00	19.00
#FFFFFF	1.11	1.00	21.00	21.00
#000000	19.00	21.00	1.00	1.00
##000000	19.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF388

Deuteranopia (green-blind)

#FFF596

Tritanopia (blue-blind)

#FAF1E2

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #effc91;
/* rgb */ color: rgb(239, 252, 145);
/* oklch */ color: oklch(95.9% 0.132 114.6);

Tailwind

colors: {
  custom: {
    50: '#f6fdb3',
    500: '#effc91',
    950: '#000000',
  },
}

SCSS

$custom: #effc91;
$custom-light: #f6fdb3;
$custom-dark: #000000;

JSON

{
  "hex": "#effc91",
  "rgb": {
    "r": 239,
    "g": 252,
    "b": 145
  },
  "hsl": {
    "h": 67.29,
    "s": 94.69,
    "l": 77.843
  },
  "oklch": {
    "l": 0.95867,
    "c": 0.13193,
    "h": 114.6
  },
  "luminance": 0.90016
}

Semantic roles & 50–950 ramp

primary

#EFFC91

secondary

#6555DC

accent

#00E61C

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFFC91

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

Preview Lab → · Contrast checker → · Palette generator →