#FFEF52#FFEF52

#FFEF52 is a very light, vivid yellow. Relative luminance 0.836; OKLCH L 93.8% C 0.171 H 103.4°. Best body text is #000000 at 17.72:1 contrast (WCAG AA passes).

Color values

HEX	#FFEF52
RGB	rgb(255, 239, 82)
HSL	hsl(54, 100%, 66%)
HSV	hsv(54, 68%, 100%)
CMYK	cmyk(0%, 6.3%, 67.8%, 0%)
CIE-LAB	lab(93.28, -11.82, 74.27)
CIE-LCH	lch(93.28, 75.20, 99.04°)
OKLab	oklab(93.8% -0.0397 0.1659)
OKLCH	oklch(93.8% 0.171 103.4)
XYZ	xyz(73.6325, 83.6052, 20.2398)
Luminance	0.8360 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFEF52 #5262FF

analogous

#FF9852 #FFEF52 #B8FF52

triadic

#FFEF52 #52FFEF #EF52FF

tetradic

#FFEF52 #52FF98 #5262FF #FF52B8

square

#FFEF52 #52FF98 #5262FF #FF52B8

split-complementary

#FFEF52 #52B8FF #9852FF

monochromatic

#D7C300 #FFE915 #FFEF52 #FFF58F #FFFACC

Accessibility & contrast

On white

1.19

#FFEF52 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.72

#FFEF52 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFEF52

17.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFEF52	#FFFFFF	#000000	##000000
##FFEF52	1.00	1.19	17.72	17.72
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.72	21.00	1.00	1.00
##000000	17.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE73B

Deuteranopia (green-blind)

#FFEF5C

Tritanopia (blue-blind)

#FFDFCF

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ffef52;
/* rgb */ color: rgb(255, 239, 82);
/* oklch */ color: oklch(93.8% 0.171 103.4);

Tailwind

colors: {
  custom: {
    50: '#fff38b',
    500: '#ffef52',
    950: '#000000',
  },
}

SCSS

$custom: #ffef52;
$custom-light: #fff38b;
$custom-dark: #000000;

JSON

{
  "hex": "#ffef52",
  "rgb": {
    "r": 255,
    "g": 239,
    "b": 82
  },
  "hsl": {
    "h": 54.451,
    "s": 100,
    "l": 66.078
  },
  "oklch": {
    "l": 0.93801,
    "c": 0.17062,
    "h": 103.4
  },
  "luminance": 0.83602
}

Semantic roles & 50–950 ramp

primary

#FFEF52

secondary

#2535D0

accent

#15E600

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#19170D

muted

#87857F

Preview Lab

Preview with #FFEF52

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

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