#FEFF51#FEFF51

#FEFF51 is a very light, vivid yellow. Relative luminance 0.932; OKLCH L 97.0% C 0.186 H 109.7°. Best body text is #000000 at 19.64:1 contrast (WCAG AA passes).

Color values

HEX	#FEFF51
RGB	rgb(254, 255, 81)
HSL	hsl(60, 100%, 66%)
HSV	hsv(60, 68%, 100%)
CMYK	cmyk(0.4%, 0%, 68.2%, 0%)
CIE-LAB	lab(97.30, -20.02, 78.61)
CIE-LCH	lch(97.30, 81.12, 104.29°)
OKLab	oklab(96.99% -0.0628 0.175)
OKLCH	oklch(96.99% 0.186 109.7)
XYZ	xyz(78.1209, 93.1872, 21.6547)
Luminance	0.9318 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FEFF51 #5251FF

analogous

#FFA951 #FEFF51 #A7FF51

triadic

#FEFF51 #51FEFF #FF51FE

tetradic

#FEFF51 #51FFA9 #5251FF #FF51A7

square

#FEFF51 #51FFA9 #5251FF #FF51A7

split-complementary

#FEFF51 #51A7FF #A951FF

monochromatic

#D4D600 #FEFF14 #FEFF51 #FEFF8E #FFFFCB

Accessibility & contrast

On white

1.07

#FEFF51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.64

#FEFF51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FEFF51

19.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FEFF51	#FFFFFF	#000000	##000000
##FEFF51	1.00	1.07	19.64	19.64
#FFFFFF	1.07	1.00	21.00	21.00
#000000	19.64	21.00	1.00	1.00
##000000	19.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF434

Deuteranopia (green-blind)

#FFFA5E

Tritanopia (blue-blind)

#FFEFDD

Achromatopsia (no color)

#F7F7F7

Design tokens & code

CSS

--color: #feff51;
/* rgb */ color: rgb(254, 255, 81);
/* oklch */ color: oklch(97.0% 0.186 109.7);

Tailwind

colors: {
  custom: {
    50: '#ffff8c',
    500: '#feff51',
    950: '#000000',
  },
}

SCSS

$custom: #feff51;
$custom-light: #ffff8c;
$custom-dark: #000000;

JSON

{
  "hex": "#feff51",
  "rgb": {
    "r": 254,
    "g": 255,
    "b": 81
  },
  "hsl": {
    "h": 60.345,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.96987,
    "c": 0.1859,
    "h": 109.7
  },
  "luminance": 0.93185
}

Semantic roles & 50–950 ramp

primary

#FEFF51

secondary

#2625D0

accent

#00E601

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#19170D

muted

#87857F

Preview Lab

Preview with #FEFF51

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

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