#EFF591#EFF591

#EFF591 is a very light, vivid yellow. Relative luminance 0.857; OKLCH L 94.4% C 0.123 H 111.5°. Best body text is #000000 at 18.14:1 contrast (WCAG AA passes).

Color values

HEX	#EFF591
RGB	rgb(239, 245, 145)
HSL	hsl(64, 83%, 76%)
HSV	hsv(64, 41%, 96%)
CMYK	cmyk(2.4%, 0%, 40.8%, 3.9%)
CIE-LAB	lab(94.18, -16.29, 47.38)
CIE-LCH	lch(94.18, 50.10, 108.97°)
OKLab	oklab(94.42% -0.0453 0.1148)
OKLCH	oklch(94.42% 0.123 111.5)
XYZ	xyz(73.3608, 85.7011, 39.4600)
Luminance	0.8570 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF591 #9791F5

analogous

#F5C991 #EFF591 #BDF591

triadic

#EFF591 #91EFF5 #F591EF

tetradic

#EFF591 #91F5C9 #9791F5 #F591BD

square

#EFF591 #91F5C9 #9791F5 #F591BD

split-complementary

#EFF591 #91BDF5 #C991F5

monochromatic

#DFEB21 #E7F059 #EFF591 #F7FAC9 #FBFCE3

Accessibility & contrast

On white

1.16

#EFF591 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.14

#EFF591 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF591

18.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF591	#FFFFFF	#000000	##000000
##EFF591	1.00	1.16	18.14	18.14
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.14	21.00	1.00	1.00
##000000	18.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED89

Deuteranopia (green-blind)

#FFF096

Tritanopia (blue-blind)

#FBEADD

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff591;
/* rgb */ color: rgb(239, 245, 145);
/* oklch */ color: oklch(94.4% 0.123 111.5);

Tailwind

colors: {
  custom: {
    50: '#f6f8b3',
    500: '#eff591',
    950: '#000000',
  },
}

SCSS

$custom: #eff591;
$custom-light: #f6f8b3;
$custom-dark: #000000;

JSON

{
  "hex": "#eff591",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 145
  },
  "hsl": {
    "h": 63.6,
    "s": 83.333,
    "l": 76.471
  },
  "oklch": {
    "l": 0.94417,
    "c": 0.12343,
    "h": 111.5
  },
  "luminance": 0.857
}

Semantic roles & 50–950 ramp

primary

#EFF591

secondary

#5F57D3

accent

#06E013

background

#FFFFFD

surface

#FFFEF8

border

#D7D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFF591

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

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