#C9EF55#C9EF55

#C9EF55 is a very light, vivid yellow-green. Relative luminance 0.748; OKLCH L 89.6% C 0.182 H 122.0°. Best body text is #000000 at 15.96:1 contrast (WCAG AA passes).

Color values

HEX	#C9EF55
RGB	rgb(201, 239, 85)
HSL	hsl(75, 83%, 64%)
HSV	hsv(75, 64%, 94%)
CMYK	cmyk(15.9%, 0%, 64.4%, 6.3%)
CIE-LAB	lab(89.30, -33.24, 67.77)
CIE-LCH	lch(89.30, 75.49, 116.13°)
OKLab	oklab(89.64% -0.0964 0.1541)
OKLCH	oklch(89.64% 0.182 122)
XYZ	xyz(56.5943, 74.8063, 20.0501)
Luminance	0.7481 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C9EF55 #7B55EF

analogous

#EFC855 #C9EF55 #7CEF55

triadic

#C9EF55 #55C9EF #EF55C9

tetradic

#C9EF55 #55EFC8 #7B55EF #EF557C

square

#C9EF55 #55EFC8 #7B55EF #EF557C

split-complementary

#C9EF55 #557CEF #C855EF

monochromatic

#8FB811 #B7EA1D #C9EF55 #DBF48D #EDFAC5

Accessibility & contrast

On white

1.32

#C9EF55 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.96

#C9EF55 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C9EF55

15.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C9EF55	#FFFFFF	#000000	##000000
##C9EF55	1.00	1.32	15.96	15.96
#FFFFFF	1.32	1.00	21.00	21.00
#000000	15.96	21.00	1.00	1.00
##000000	15.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FDE140

Deuteranopia (green-blind)

#F8E060

Tritanopia (blue-blind)

#D3E3CF

Achromatopsia (no color)

#E0E0E0

Design tokens & code

CSS

--color: #c9ef55;
/* rgb */ color: rgb(201, 239, 85);
/* oklch */ color: oklch(89.6% 0.182 122.0);

Tailwind

colors: {
  custom: {
    50: '#ddf48c',
    500: '#c9ef55',
    950: '#000000',
  },
}

SCSS

$custom: #c9ef55;
$custom-light: #ddf48c;
$custom-dark: #000000;

JSON

{
  "hex": "#c9ef55",
  "rgb": {
    "r": 201,
    "g": 239,
    "b": 85
  },
  "hsl": {
    "h": 74.805,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.89639,
    "c": 0.18173,
    "h": 122
  },
  "luminance": 0.74806
}

Semantic roles & 50–950 ramp

primary

#C9EF55

secondary

#5231B7

accent

#06DF3C

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#15170D

muted

#84857F

Preview Lab

Preview with #C9EF55

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

Preview Lab → · Contrast checker → · Palette generator →