#EFFD99#EFFD99

#EFFD99 is a very light, vivid yellow. Relative luminance 0.909; OKLCH L 96.2% C 0.125 H 115.3°. Best body text is #000000 at 19.18:1 contrast (WCAG AA passes).

Color values

HEX	#EFFD99
RGB	rgb(239, 253, 153)
HSL	hsl(68, 96%, 80%)
HSV	hsv(68, 40%, 99%)
CMYK	cmyk(5.5%, 0%, 39.5%, 0.8%)
CIE-LAB	lab(96.37, -19.31, 46.27)
CIE-LCH	lch(96.37, 50.14, 112.65°)
OKLab	oklab(96.19% -0.0533 0.1127)
OKLCH	oklch(96.19% 0.125 115.3)
XYZ	xyz(76.4722, 90.9020, 43.6481)
Luminance	0.9090 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFD99 #A799FD

analogous

#FDD999 #EFFD99 #BDFD99

triadic

#EFFD99 #99EFFD #FD99EF

tetradic

#EFFD99 #99FDD9 #A799FD #FD99BD

square

#EFFD99 #99FDD9 #A799FD #FD99BD

split-complementary

#EFFD99 #99BDFD #D999FD

monochromatic

#DCFB21 #E6FC5D #EFFD99 #F8FED5 #FAFEE1

Accessibility & contrast

On white

1.09

#EFFD99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.18

#EFFD99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFD99

19.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFD99	#FFFFFF	#000000	##000000
##EFFD99	1.00	1.09	19.18	19.18
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.18	21.00	1.00	1.00
##000000	19.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF491

Deuteranopia (green-blind)

#FFF69E

Tritanopia (blue-blind)

#F9F3E5

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #effd99;
/* rgb */ color: rgb(239, 253, 153);
/* oklch */ color: oklch(96.2% 0.125 115.3);

Tailwind

colors: {
  custom: {
    50: '#f5feb8',
    500: '#effd99',
    950: '#000000',
  },
}

SCSS

$custom: #effd99;
$custom-light: #f5feb8;
$custom-dark: #000000;

JSON

{
  "hex": "#effd99",
  "rgb": {
    "r": 239,
    "g": 253,
    "b": 153
  },
  "hsl": {
    "h": 68.4,
    "s": 96.154,
    "l": 79.608
  },
  "oklch": {
    "l": 0.96193,
    "c": 0.1247,
    "h": 115.3
  },
  "luminance": 0.90901
}

Semantic roles & 50–950 ramp

primary

#EFFD99

secondary

#6E5BDF

accent

#00E620

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFFD99

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

Preview Lab → · Contrast checker → · Palette generator →