#FFEF4F#FFEF4F

#FFEF4F is a very light, vivid yellow. Relative luminance 0.836; OKLCH L 93.8% C 0.173 H 103.5°. Best body text is #000000 at 17.71:1 contrast (WCAG AA passes).

Color values

HEX	#FFEF4F
RGB	rgb(255, 239, 79)
HSL	hsl(55, 100%, 65%)
HSV	hsv(55, 69%, 100%)
CMYK	cmyk(0%, 6.3%, 69%, 0%)
CIE-LAB	lab(93.26, -11.96, 75.35)
CIE-LCH	lch(93.26, 76.30, 99.02°)
OKLab	oklab(93.78% -0.0404 0.1677)
OKLCH	oklch(93.78% 0.173 103.5)
XYZ	xyz(73.5209, 83.5605, 19.6517)
Luminance	0.8356 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFEF4F #4F5FFF

analogous

#FF974F #FFEF4F #B7FF4F

triadic

#FFEF4F #4FFFEF #EF4FFF

tetradic

#FFEF4F #4FFF97 #4F5FFF #FF4FB7

square

#FFEF4F #4FFF97 #4F5FFF #FF4FB7

split-complementary

#FFEF4F #4FB7FF #974FFF

monochromatic

#D4C000 #FFE912 #FFEF4F #FFF58C #FFFAC9

Accessibility & contrast

On white

1.19

#FFEF4F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.71

#FFEF4F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFEF4F

17.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFEF4F	#FFFFFF	#000000	##000000
##FFEF4F	1.00	1.19	17.71	17.71
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.71	21.00	1.00	1.00
##000000	17.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE736

Deuteranopia (green-blind)

#FFEF59

Tritanopia (blue-blind)

#FFDFCF

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ffef4f;
/* rgb */ color: rgb(255, 239, 79);
/* oklch */ color: oklch(93.8% 0.173 103.5);

Tailwind

colors: {
  custom: {
    50: '#fff389',
    500: '#ffef4f',
    950: '#000000',
  },
}

SCSS

$custom: #ffef4f;
$custom-light: #fff389;
$custom-dark: #000000;

JSON

{
  "hex": "#ffef4f",
  "rgb": {
    "r": 255,
    "g": 239,
    "b": 79
  },
  "hsl": {
    "h": 54.545,
    "s": 100,
    "l": 65.49
  },
  "oklch": {
    "l": 0.93779,
    "c": 0.17253,
    "h": 103.5
  },
  "luminance": 0.83558
}

Semantic roles & 50–950 ramp

primary

#FFEF4F

secondary

#2434CE

accent

#15E600

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#19170C

muted

#87857F

Preview Lab

Preview with #FFEF4F

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

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