#C5EF5B#C5EF5B

#C5EF5B is a very light, vivid yellow-green. Relative luminance 0.744; OKLCH L 89.4% C 0.179 H 123.5°. Best body text is #000000 at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#C5EF5B
RGB	rgb(197, 239, 91)
HSL	hsl(77, 82%, 65%)
HSV	hsv(77, 62%, 94%)
CMYK	cmyk(17.6%, 0%, 61.9%, 6.3%)
CIE-LAB	lab(89.09, -34.36, 65.07)
CIE-LCH	lch(89.09, 73.59, 117.84°)
OKLab	oklab(89.42% -0.0987 0.1492)
OKLCH	oklch(89.42% 0.179 123.5)
XYZ	xyz(55.7812, 74.3583, 21.3094)
Luminance	0.7436 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C5EF5B #855BEF

analogous

#EFCF5B #C5EF5B #7BEF5B

triadic

#C5EF5B #5BC5EF #EF5BC5

tetradic

#C5EF5B #5BEFCF #855BEF #EF5B7B

square

#C5EF5B #5BEFCF #855BEF #EF5B7B

split-complementary

#C5EF5B #5B7BEF #CF5BEF

monochromatic

#8DBD12 #B1EA23 #C5EF5B #D9F493 #ECFACB

Accessibility & contrast

On white

1.32

#C5EF5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.87

#C5EF5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C5EF5B

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C5EF5B	#FFFFFF	#000000	##000000
##C5EF5B	1.00	1.32	15.87	15.87
#FFFFFF	1.32	1.00	21.00	21.00
#000000	15.87	21.00	1.00	1.00
##000000	15.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FCE149

Deuteranopia (green-blind)

#F6E066

Tritanopia (blue-blind)

#CEE4D0

Achromatopsia (no color)

#E0E0E0

Design tokens & code

CSS

--color: #c5ef5b;
/* rgb */ color: rgb(197, 239, 91);
/* oklch */ color: oklch(89.4% 0.179 123.5);

Tailwind

colors: {
  custom: {
    50: '#daf48f',
    500: '#c5ef5b',
    950: '#000000',
  },
}

SCSS

$custom: #c5ef5b;
$custom-light: #daf48f;
$custom-dark: #000000;

JSON

{
  "hex": "#c5ef5b",
  "rgb": {
    "r": 197,
    "g": 239,
    "b": 91
  },
  "hsl": {
    "h": 77.027,
    "s": 82.222,
    "l": 64.706
  },
  "oklch": {
    "l": 0.89418,
    "c": 0.17891,
    "h": 123.5
  },
  "luminance": 0.74359
}

Semantic roles & 50–950 ramp

primary

#C5EF5B

secondary

#5933BC

accent

#07DF44

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#15170D

muted

#84857F

Preview Lab

Preview with #C5EF5B

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

Preview Lab → · Contrast checker → · Palette generator →