Butter#FFFF81

#FFFF81 is a very light, vivid yellow. Relative luminance 0.944; OKLCH L 97.5% C 0.148 H 108.9°. Best body text is #000000 at 19.87:1 contrast (WCAG AA passes).

Butter — editorial page

Color values

HEX	#FFFF81
RGB	rgb(255, 255, 129)
HSL	hsl(60, 100%, 75%)
HSV	hsv(60, 49%, 100%)
CMYK	cmyk(0%, 0%, 49.4%, 0%)
CIE-LAB	lab(97.78, -16.45, 59.54)
CIE-LCH	lch(97.78, 61.77, 105.45°)
OKLab	oklab(97.51% -0.048 0.1404)
OKLCH	oklch(97.51% 0.148 108.9)
XYZ	xyz(80.9643, 94.3669, 34.7143)
Luminance	0.9436 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FFFF81 #8181FF

analogous

#FFC081 #FFFF81 #C0FF81

triadic

#FFFF81 #81FFFF #FF81FF

tetradic

#FFFF81 #81FFC0 #8181FF #FF81C0

square

#FFFF81 #81FFC0 #8181FF #FF81C0

split-complementary

#FFFF81 #81C0FF #C081FF

monochromatic

#FFFF07 #FFFF44 #FFFF81 #FFFFBE #FFFFE0

Accessibility & contrast

On white

1.06

#FFFF81 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.87

#FFFF81 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FFFF81

19.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FFFF81	#FFFFFF	#000000	##000000
##FFFF81	1.00	1.06	19.87	19.87
#FFFFFF	1.06	1.00	21.00	21.00
#000000	19.87	21.00	1.00	1.00
##000000	19.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF675

Deuteranopia (green-blind)

#FFFB87

Tritanopia (blue-blind)

#FFF2E2

Achromatopsia (no color)

#F9F9F9

Design tokens & code

CSS

--color: #ffff81;
/* rgb */ color: rgb(255, 255, 129);
/* oklch */ color: oklch(97.5% 0.148 108.9);

Tailwind

colors: {
  custom: {
    50: '#ffffa8',
    500: '#ffff81',
    950: '#000000',
  },
}

SCSS

$custom: #ffff81;
$custom-light: #ffffa8;
$custom-dark: #000000;

JSON

{
  "hex": "#ffff81",
  "rgb": {
    "r": 255,
    "g": 255,
    "b": 129
  },
  "hsl": {
    "h": 60,
    "s": 100,
    "l": 75.294
  },
  "oklch": {
    "l": 0.97514,
    "c": 0.1484,
    "h": 108.9
  },
  "luminance": 0.94365
}

Semantic roles & 50–950 ramp

primary

#FFFF81

secondary

#4646DE

accent

#00E600

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#181710

muted

#868581

Preview Lab

Preview with #FFFF81

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

Preview Lab → · Contrast checker → · Palette generator →