#FEF591#FEF591

#FEF591 is a very light, vivid yellow. Relative luminance 0.884; OKLCH L 95.6% C 0.122 H 103.9°. Best body text is #000000 at 18.68:1 contrast (WCAG AA passes).

Color values

HEX	#FEF591
RGB	rgb(254, 245, 145)
HSL	hsl(55, 98%, 78%)
HSV	hsv(55, 43%, 100%)
CMYK	cmyk(0%, 3.5%, 42.9%, 0.4%)
CIE-LAB	lab(95.34, -10.52, 49.07)
CIE-LCH	lch(95.34, 50.19, 102.10°)
OKLab	oklab(95.62% -0.0294 0.1185)
OKLCH	oklch(95.62% 0.122 103.9)
XYZ	xyz(78.6379, 88.4221, 39.7073)
Luminance	0.8842 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FEF591 #919AFE

analogous

#FEBE91 #FEF591 #D0FE91

triadic

#FEF591 #91FEF5 #F591FE

tetradic

#FEF591 #91FEBE #919AFE #FE91D0

square

#FEF591 #91FEBE #919AFE #FE91D0

split-complementary

#FEF591 #91D0FE #BE91FE

monochromatic

#FDEA18 #FDEF54 #FEF591 #FFFBCE #FFFCE1

Accessibility & contrast

On white

1.12

#FEF591 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.68

#FEF591 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FEF591

18.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FEF591	#FFFFFF	#000000	##000000
##FEF591	1.00	1.12	18.68	18.68
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.68	21.00	1.00	1.00
##000000	18.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF89

Deuteranopia (green-blind)

#FFF495

Tritanopia (blue-blind)

#FFE9DD

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #fef591;
/* rgb */ color: rgb(254, 245, 145);
/* oklch */ color: oklch(95.6% 0.122 103.9);

Tailwind

colors: {
  custom: {
    50: '#fff8b3',
    500: '#fef591',
    950: '#000000',
  },
}

SCSS

$custom: #fef591;
$custom-light: #fff8b3;
$custom-dark: #000000;

JSON

{
  "hex": "#fef591",
  "rgb": {
    "r": 254,
    "g": 245,
    "b": 145
  },
  "hsl": {
    "h": 55.046,
    "s": 98.198,
    "l": 78.235
  },
  "oklch": {
    "l": 0.95615,
    "c": 0.12209,
    "h": 103.9
  },
  "luminance": 0.8842
}

Semantic roles & 50–950 ramp

primary

#FEF591

secondary

#545FDF

accent

#13E600

background

#FFFFFD

surface

#FFFEF8

border

#D7D6D1

text

#181711

muted

#868581

Preview Lab

Preview with #FEF591

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

Preview Lab → · Contrast checker → · Palette generator →