#C5F55B#C5F55B

#C5F55B is a very light, vivid yellow-green. Relative luminance 0.779; OKLCH L 90.8% C 0.186 H 124.8°. Best body text is #000000 at 16.59:1 contrast (WCAG AA passes).

Color values

HEX	#C5F55B
RGB	rgb(197, 245, 91)
HSL	hsl(79, 89%, 66%)
HSV	hsv(79, 63%, 96%)
CMYK	cmyk(19.6%, 0%, 62.9%, 3.9%)
CIE-LAB	lab(90.75, -37.08, 66.86)
CIE-LCH	lch(90.75, 76.45, 119.01°)
OKLab	oklab(90.76% -0.1062 0.153)
OKLCH	oklch(90.76% 0.186 124.8)
XYZ	xyz(57.5670, 77.9299, 21.9046)
Luminance	0.7793 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C5F55B #8B5BF5

analogous

#F5D85B #C5F55B #78F55B

triadic

#C5F55B #5BC5F5 #F55BC5

tetradic

#C5F55B #5BF5D8 #8B5BF5 #F55B78

square

#C5F55B #5BF5D8 #8B5BF5 #F55B78

split-complementary

#C5F55B #5B78F5 #D85BF5

monochromatic

#8EC90C #B1F121 #C5F55B #D9F995 #EEFCCE

Accessibility & contrast

On white

1.27

#C5F55B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.59

#C5F55B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C5F55B

16.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C5F55B	#FFFFFF	#000000	##000000
##C5F55B	1.00	1.27	16.59	16.59
#FFFFFF	1.27	1.00	21.00	21.00
#000000	16.59	21.00	1.00	1.00
##000000	16.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE648

Deuteranopia (green-blind)

#FBE466

Tritanopia (blue-blind)

#CDEAD5

Achromatopsia (no color)

#E4E4E4

Design tokens & code

CSS

--color: #c5f55b;
/* rgb */ color: rgb(197, 245, 91);
/* oklch */ color: oklch(90.8% 0.186 124.8);

Tailwind

colors: {
  custom: {
    50: '#daf890',
    500: '#c5f55b',
    950: '#000000',
  },
}

SCSS

$custom: #c5f55b;
$custom-light: #daf890;
$custom-dark: #000000;

JSON

{
  "hex": "#c5f55b",
  "rgb": {
    "r": 197,
    "g": 245,
    "b": 91
  },
  "hsl": {
    "h": 78.701,
    "s": 88.506,
    "l": 65.882
  },
  "oklch": {
    "l": 0.90756,
    "c": 0.18627,
    "h": 124.8
  },
  "luminance": 0.7793
}

Semantic roles & 50–950 ramp

primary

#C5F55B

secondary

#5E2EC6

accent

#00E548

background

#FEFFFC

surface

#FCFFF4

border

#D5D7CE

text

#15170D

muted

#84857F

Preview Lab

Preview with #C5F55B

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

Preview Lab → · Contrast checker → · Palette generator →