#EFF063#EFF063

#EFF063 is a very light, vivid yellow. Relative luminance 0.816; OKLCH L 92.8% C 0.161 H 109.5°. Best body text is #000000 at 17.31:1 contrast (WCAG AA passes).

Color values

HEX	#EFF063
RGB	rgb(239, 240, 99)
HSL	hsl(60, 82%, 66%)
HSV	hsv(60, 59%, 94%)
CMYK	cmyk(0.4%, 0%, 58.8%, 5.9%)
CIE-LAB	lab(92.39, -17.79, 66.21)
CIE-LCH	lch(92.39, 68.56, 105.04°)
OKLab	oklab(92.82% -0.0539 0.1518)
OKLCH	oklch(92.82% 0.161 109.5)
XYZ	xyz(69.0108, 81.5736, 23.9119)
Luminance	0.8157 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF063 #6463F0

analogous

#F0AB63 #EFF063 #A8F063

triadic

#EFF063 #63EFF0 #F063EF

tetradic

#EFF063 #63F0AB #6463F0 #F063A8

square

#EFF063 #63F0AB #6463F0 #F063A8

split-complementary

#EFF063 #63A8F0 #AB63F0

monochromatic

#C4C613 #E9EB2B #EFF063 #F5F59B #FAFBD3

Accessibility & contrast

On white

1.21

#EFF063 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.31

#EFF063 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF063

17.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF063	#FFFFFF	#000000	##000000
##EFF063	1.00	1.21	17.31	17.31
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.31	21.00	1.00	1.00
##000000	17.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE753

Deuteranopia (green-blind)

#FFEB6B

Tritanopia (blue-blind)

#FEE2D2

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #eff063;
/* rgb */ color: rgb(239, 240, 99);
/* oklch */ color: oklch(92.8% 0.161 109.5);

Tailwind

colors: {
  custom: {
    50: '#f7f495',
    500: '#eff063',
    950: '#000000',
  },
}

SCSS

$custom: #eff063;
$custom-light: #f7f495;
$custom-dark: #000000;

JSON

{
  "hex": "#eff063",
  "rgb": {
    "r": 239,
    "g": 240,
    "b": 99
  },
  "hsl": {
    "h": 60.426,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.92822,
    "c": 0.16109,
    "h": 109.5
  },
  "luminance": 0.81572
}

Semantic roles & 50–950 ramp

primary

#EFF063

secondary

#3534C3

accent

#07DF08

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFF063

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

Preview Lab → · Contrast checker → · Palette generator →