#FBFF51#FBFF51

#FBFF51 is a very light, vivid yellow. Relative luminance 0.926; OKLCH L 96.7% C 0.186 H 110.7°. Best body text is #000000 at 19.52:1 contrast (WCAG AA passes).

Color values

HEX	#FBFF51
RGB	rgb(251, 255, 81)
HSL	hsl(61, 100%, 66%)
HSV	hsv(61, 68%, 100%)
CMYK	cmyk(1.6%, 0%, 68.2%, 0%)
CIE-LAB	lab(97.08, -21.22, 78.31)
CIE-LCH	lch(97.08, 81.13, 105.16°)
OKLab	oklab(96.75% -0.066 0.1744)
OKLCH	oklch(96.75% 0.186 110.7)
XYZ	xyz(77.0314, 92.6254, 21.6037)
Luminance	0.9262 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FBFF51 #5551FF

analogous

#FFAC51 #FBFF51 #A4FF51

triadic

#FBFF51 #51FBFF #FF51FB

tetradic

#FBFF51 #51FFAC #5551FF #FF51A4

square

#FBFF51 #51FFAC #5551FF #FF51A4

split-complementary

#FBFF51 #51A4FF #AC51FF

monochromatic

#D1D600 #FAFF14 #FBFF51 #FCFF8E #FEFFCB

Accessibility & contrast

On white

1.08

#FBFF51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.52

#FBFF51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FBFF51

19.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FBFF51	#FFFFFF	#000000	##000000
##FBFF51	1.00	1.08	19.52	19.52
#FFFFFF	1.08	1.00	21.00	21.00
#000000	19.52	21.00	1.00	1.00
##000000	19.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF434

Deuteranopia (green-blind)

#FFF95E

Tritanopia (blue-blind)

#FFF0DD

Achromatopsia (no color)

#F7F7F7

Design tokens & code

CSS

--color: #fbff51;
/* rgb */ color: rgb(251, 255, 81);
/* oklch */ color: oklch(96.7% 0.186 110.7);

Tailwind

colors: {
  custom: {
    50: '#ffff8c',
    500: '#fbff51',
    950: '#000000',
  },
}

SCSS

$custom: #fbff51;
$custom-light: #ffff8c;
$custom-dark: #000000;

JSON

{
  "hex": "#fbff51",
  "rgb": {
    "r": 251,
    "g": 255,
    "b": 81
  },
  "hsl": {
    "h": 61.379,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.96749,
    "c": 0.18649,
    "h": 110.7
  },
  "luminance": 0.92623
}

Semantic roles & 50–950 ramp

primary

#FBFF51

secondary

#2925D0

accent

#00E605

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#19170D

muted

#87857F

Preview Lab

Preview with #FBFF51

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

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