#FFFF5B#FFFF5B

#FFFF5B is a very light, vivid yellow. Relative luminance 0.935; OKLCH L 97.1% C 0.179 H 109.3°. Best body text is #000000 at 19.71:1 contrast (WCAG AA passes).

Color values

HEX	#FFFF5B
RGB	rgb(255, 255, 91)
HSL	hsl(60, 100%, 68%)
HSV	hsv(60, 64%, 100%)
CMYK	cmyk(0%, 0%, 64.3%, 0%)
CIE-LAB	lab(97.45, -19.09, 75.13)
CIE-LCH	lch(97.45, 77.52, 104.26°)
OKLab	oklab(97.14% -0.0593 0.1692)
OKLCH	oklch(97.14% 0.179 109.3)
XYZ	xyz(78.8909, 93.5376, 23.7943)
Luminance	0.9354 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFFF5B #5B5BFF

analogous

#FFAD5B #FFFF5B #ADFF5B

triadic

#FFFF5B #5BFFFF #FF5BFF

tetradic

#FFFF5B #5BFFAD #5B5BFF #FF5BAD

square

#FFFF5B #5BFFAD #5B5BFF #FF5BAD

split-complementary

#FFFF5B #5BADFF #AD5BFF

monochromatic

#E0E000 #FFFF1E #FFFF5B #FFFF98 #FFFFD5

Accessibility & contrast

On white

1.07

#FFFF5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.71

#FFFF5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFFF5B

19.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFFF5B	#FFFFFF	#000000	##000000
##FFFF5B	1.00	1.07	19.71	19.71
#FFFFFF	1.07	1.00	21.00	21.00
#000000	19.71	21.00	1.00	1.00
##000000	19.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF544

Deuteranopia (green-blind)

#FFFA66

Tritanopia (blue-blind)

#FFF0DE

Achromatopsia (no color)

#F8F8F8

Design tokens & code

CSS

--color: #ffff5b;
/* rgb */ color: rgb(255, 255, 91);
/* oklch */ color: oklch(97.1% 0.179 109.3);

Tailwind

colors: {
  custom: {
    50: '#ffff91',
    500: '#ffff5b',
    950: '#000000',
  },
}

SCSS

$custom: #ffff5b;
$custom-light: #ffff91;
$custom-dark: #000000;

JSON

{
  "hex": "#ffff5b",
  "rgb": {
    "r": 255,
    "g": 255,
    "b": 91
  },
  "hsl": {
    "h": 60,
    "s": 100,
    "l": 67.843
  },
  "oklch": {
    "l": 0.9714,
    "c": 0.17925,
    "h": 109.3
  },
  "luminance": 0.93535
}

Semantic roles & 50–950 ramp

primary

#FFFF5B

secondary

#2626D8

accent

#00E600

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#19170D

muted

#87857F

Preview Lab

Preview with #FFFF5B

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

Preview Lab → · Contrast checker → · Palette generator →