#C5EF59#C5EF59

#C5EF59 is a very light, vivid yellow-green. Relative luminance 0.743; OKLCH L 89.4% C 0.180 H 123.4°. Best body text is #000000 at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#C5EF59
RGB	rgb(197, 239, 89)
HSL	hsl(77, 82%, 64%)
HSV	hsv(77, 63%, 94%)
CMYK	cmyk(17.6%, 0%, 62.8%, 6.3%)
CIE-LAB	lab(89.08, -34.50, 65.87)
CIE-LCH	lch(89.08, 74.36, 117.65°)
OKLab	oklab(89.4% -0.0993 0.1506)
OKLCH	oklch(89.4% 0.18 123.4)
XYZ	xyz(55.6961, 74.3243, 20.8611)
Luminance	0.7432 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C5EF59 #8359EF

analogous

#EFCE59 #C5EF59 #7AEF59

triadic

#C5EF59 #59C5EF #EF59C5

tetradic

#C5EF59 #59EFCE #8359EF #EF597A

square

#C5EF59 #59EFCE #8359EF #EF597A

split-complementary

#C5EF59 #597AEF #CE59EF

monochromatic

#8CBC12 #B1EA21 #C5EF59 #D9F491 #ECFAC9

Accessibility & contrast

On white

1.32

#C5EF59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.87

#C5EF59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C5EF59

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C5EF59	#FFFFFF	#000000	##000000
##C5EF59	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)

#FCE146

Deuteranopia (green-blind)

#F6DF64

Tritanopia (blue-blind)

#CEE4D0

Achromatopsia (no color)

#E0E0E0

Design tokens & code

CSS

--color: #c5ef59;
/* rgb */ color: rgb(197, 239, 89);
/* oklch */ color: oklch(89.4% 0.180 123.4);

Tailwind

colors: {
  custom: {
    50: '#daf48e',
    500: '#c5ef59',
    950: '#000000',
  },
}

SCSS

$custom: #c5ef59;
$custom-light: #daf48e;
$custom-dark: #000000;

JSON

{
  "hex": "#c5ef59",
  "rgb": {
    "r": 197,
    "g": 239,
    "b": 89
  },
  "hsl": {
    "h": 76.8,
    "s": 82.418,
    "l": 64.314
  },
  "oklch": {
    "l": 0.894,
    "c": 0.18042,
    "h": 123.4
  },
  "luminance": 0.74325
}

Semantic roles & 50–950 ramp

primary

#C5EF59

secondary

#5832BA

accent

#07DF43

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#15170D

muted

#84857F

Preview Lab

Preview with #C5EF59

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

Preview Lab → · Contrast checker → · Palette generator →