#EFF85B#EFF85B

#EFF85B is a very light, vivid yellow. Relative luminance 0.862; OKLCH L 94.4% C 0.175 H 112.4°. Best body text is #000000 at 18.25:1 contrast (WCAG AA passes).

Color values

HEX	#EFF85B
RGB	rgb(239, 248, 91)
HSL	hsl(63, 92%, 66%)
HSV	hsv(63, 63%, 97%)
CMYK	cmyk(3.6%, 0%, 63.3%, 2.7%)
CIE-LAB	lab(94.42, -22.14, 71.61)
CIE-LCH	lch(94.42, 74.95, 107.18°)
OKLab	oklab(94.42% -0.067 0.1621)
OKLCH	oklch(94.42% 0.175 112.4)
XYZ	xyz(71.0543, 86.2424, 22.7989)
Luminance	0.8624 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF85B #645BF8

analogous

#F8B25B #EFF85B #A1F85B

triadic

#EFF85B #5BEFF8 #F85BEF

tetradic

#EFF85B #5BF8B2 #645BF8 #F85BA1

square

#EFF85B #5BF8B2 #645BF8 #F85BA1

split-complementary

#EFF85B #5BA1F8 #B25BF8

monochromatic

#C4D009 #E9F520 #EFF85B #F5FB96 #FAFDD0

Accessibility & contrast

On white

1.15

#EFF85B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.25

#EFF85B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF85B

18.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF85B	#FFFFFF	#000000	##000000
##EFF85B	1.00	1.15	18.25	18.25
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.25	21.00	1.00	1.00
##000000	18.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED46

Deuteranopia (green-blind)

#FFF165

Tritanopia (blue-blind)

#FEEAD8

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #eff85b;
/* rgb */ color: rgb(239, 248, 91);
/* oklch */ color: oklch(94.4% 0.175 112.4);

Tailwind

colors: {
  custom: {
    50: '#f7fa91',
    500: '#eff85b',
    950: '#000000',
  },
}

SCSS

$custom: #eff85b;
$custom-light: #f7fa91;
$custom-dark: #000000;

JSON

{
  "hex": "#eff85b",
  "rgb": {
    "r": 239,
    "g": 248,
    "b": 91
  },
  "hsl": {
    "h": 63.439,
    "s": 91.813,
    "l": 66.471
  },
  "oklch": {
    "l": 0.94423,
    "c": 0.17543,
    "h": 112.4
  },
  "luminance": 0.86241
}

Semantic roles & 50–950 ramp

primary

#EFF85B

secondary

#352CCB

accent

#00E60D

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF85B

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

Preview Lab → · Contrast checker → · Palette generator →