#EFFB8B#EFFB8B

#EFFB8B is a very light, vivid yellow. Relative luminance 0.892; OKLCH L 95.6% C 0.137 H 114.0°. Best body text is #000000 at 18.84:1 contrast (WCAG AA passes).

Color values

HEX	#EFFB8B
RGB	rgb(239, 251, 139)
HSL	hsl(66, 93%, 76%)
HSV	hsv(66, 45%, 98%)
CMYK	cmyk(4.8%, 0%, 44.6%, 1.6%)
CIE-LAB	lab(95.67, -19.79, 52.09)
CIE-LCH	lch(95.67, 55.72, 110.81°)
OKLab	oklab(95.58% -0.0557 0.125)
OKLCH	oklch(95.58% 0.137 114)
XYZ	xyz(74.7549, 89.2102, 37.7023)
Luminance	0.8921 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFB8B #978BFB

analogous

#FBCF8B #EFFB8B #B7FB8B

triadic

#EFFB8B #8BEFFB #FB8BEF

tetradic

#EFFB8B #8BFBCF #978BFB #FB8BB7

square

#EFFB8B #8BFBCF #978BFB #FB8BB7

split-complementary

#EFFB8B #8BB7FB #CF8BFB

monochromatic

#DFF715 #E7F950 #EFFB8B #F7FDC6 #FBFEE1

Accessibility & contrast

On white

1.11

#EFFB8B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.84

#EFFB8B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFB8B

18.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFB8B	#FFFFFF	#000000	##000000
##EFFB8B	1.00	1.11	18.84	18.84
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.84	21.00	1.00	1.00
##000000	18.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF182

Deuteranopia (green-blind)

#FFF491

Tritanopia (blue-blind)

#FBF0E1

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #effb8b;
/* rgb */ color: rgb(239, 251, 139);
/* oklch */ color: oklch(95.6% 0.137 114.0);

Tailwind

colors: {
  custom: {
    50: '#f6fcaf',
    500: '#effb8b',
    950: '#000000',
  },
}

SCSS

$custom: #effb8b;
$custom-light: #f6fcaf;
$custom-dark: #000000;

JSON

{
  "hex": "#effb8b",
  "rgb": {
    "r": 239,
    "g": 251,
    "b": 139
  },
  "hsl": {
    "h": 66.429,
    "s": 93.333,
    "l": 76.471
  },
  "oklch": {
    "l": 0.95575,
    "c": 0.13687,
    "h": 114
  },
  "luminance": 0.89209
}

Semantic roles & 50–950 ramp

primary

#EFFB8B

secondary

#5F50DA

accent

#00E619

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFFB8B

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

Preview Lab → · Contrast checker → · Palette generator →