#EFF561#EFF561

#EFF561 is a very light, vivid yellow. Relative luminance 0.845; OKLCH L 93.8% C 0.168 H 111.4°. Best body text is #000000 at 17.90:1 contrast (WCAG AA passes).

Color values

HEX	#EFF561
RGB	rgb(239, 245, 97)
HSL	hsl(62, 88%, 67%)
HSV	hsv(62, 60%, 96%)
CMYK	cmyk(2.4%, 0%, 60.4%, 3.9%)
CIE-LAB	lab(93.68, -20.33, 68.43)
CIE-LCH	lch(93.68, 71.39, 106.55°)
OKLab	oklab(93.85% -0.0613 0.1563)
OKLCH	oklch(93.85% 0.168 111.4)
XYZ	xyz(70.4086, 84.5202, 23.9120)
Luminance	0.8452 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF561 #6761F5

analogous

#F5B161 #EFF561 #A5F561

triadic

#EFF561 #61EFF5 #F561EF

tetradic

#EFF561 #61F5B1 #6761F5 #F561A5

square

#EFF561 #61F5B1 #6761F5 #F561A5

split-complementary

#EFF561 #61A5F5 #B161F5

monochromatic

#C7CF0D #E9F127 #EFF561 #F5F99B #FBFCD4

Accessibility & contrast

On white

1.17

#EFF561 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.90

#EFF561 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF561

17.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF561	#FFFFFF	#000000	##000000
##EFF561	1.00	1.17	17.90	17.90
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.90	21.00	1.00	1.00
##000000	17.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB4F

Deuteranopia (green-blind)

#FFEF6A

Tritanopia (blue-blind)

#FEE7D6

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #eff561;
/* rgb */ color: rgb(239, 245, 97);
/* oklch */ color: oklch(93.8% 0.168 111.4);

Tailwind

colors: {
  custom: {
    50: '#f7f894',
    500: '#eff561',
    950: '#000000',
  },
}

SCSS

$custom: #eff561;
$custom-light: #f7f894;
$custom-dark: #000000;

JSON

{
  "hex": "#eff561",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 97
  },
  "hsl": {
    "h": 62.432,
    "s": 88.095,
    "l": 67.059
  },
  "oklch": {
    "l": 0.93847,
    "c": 0.16785,
    "h": 111.4
  },
  "luminance": 0.84519
}

Semantic roles & 50–950 ramp

primary

#EFF561

secondary

#3630CA

accent

#01E50A

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFF561

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

Preview Lab → · Contrast checker → · Palette generator →