#EFFB99#EFFB99

#EFFB99 is a very light, vivid yellow. Relative luminance 0.896; OKLCH L 95.8% C 0.122 H 114.4°. Best body text is #000000 at 18.93:1 contrast (WCAG AA passes).

Color values

HEX	#EFFB99
RGB	rgb(239, 251, 153)
HSL	hsl(67, 92%, 79%)
HSV	hsv(67, 39%, 98%)
CMYK	cmyk(4.8%, 0%, 39%, 1.6%)
CIE-LAB	lab(95.85, -18.35, 45.61)
CIE-LCH	lch(95.85, 49.16, 111.91°)
OKLab	oklab(95.78% -0.0505 0.1112)
OKLCH	oklch(95.78% 0.122 114.4)
XYZ	xyz(75.8441, 89.6459, 43.4387)
Luminance	0.8964 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFB99 #A599FB

analogous

#FBD699 #EFFB99 #BEFB99

triadic

#EFFB99 #99EFFB #FB99EF

tetradic

#EFFB99 #99FBD6 #A599FB #FB99BE

square

#EFFB99 #99FBD6 #A599FB #FB99BE

split-complementary

#EFFB99 #99BEFB #D699FB

monochromatic

#DDF623 #E6F95E #EFFB99 #F8FDD4 #FAFEE2

Accessibility & contrast

On white

1.11

#EFFB99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.93

#EFFB99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFB99

18.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFB99	#FFFFFF	#000000	##000000
##EFFB99	1.00	1.11	18.93	18.93
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.93	21.00	1.00	1.00
##000000	18.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF292

Deuteranopia (green-blind)

#FFF49E

Tritanopia (blue-blind)

#FAF1E3

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #effb99;
/* rgb */ color: rgb(239, 251, 153);
/* oklch */ color: oklch(95.8% 0.122 114.4);

Tailwind

colors: {
  custom: {
    50: '#f5fcb8',
    500: '#effb99',
    950: '#000000',
  },
}

SCSS

$custom: #effb99;
$custom-light: #f5fcb8;
$custom-dark: #000000;

JSON

{
  "hex": "#effb99",
  "rgb": {
    "r": 239,
    "g": 251,
    "b": 153
  },
  "hsl": {
    "h": 67.347,
    "s": 92.453,
    "l": 79.216
  },
  "oklch": {
    "l": 0.95779,
    "c": 0.12218,
    "h": 114.4
  },
  "luminance": 0.89645
}

Semantic roles & 50–950 ramp

primary

#EFFB99

secondary

#6C5CDC

accent

#00E61C

background

#FFFFFD

surface

#FFFFF8

border

#D7D7D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFFB99

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

Preview Lab → · Contrast checker → · Palette generator →