#C9EE51#C9EE51

#C9EE51 is a very light, vivid yellow-green. Relative luminance 0.742; OKLCH L 89.4% C 0.183 H 121.6°. Best body text is #000000 at 15.83:1 contrast (WCAG AA passes).

Color values

HEX	#C9EE51
RGB	rgb(201, 238, 81)
HSL	hsl(74, 82%, 63%)
HSV	hsv(74, 66%, 93%)
CMYK	cmyk(15.5%, 0%, 66%, 6.7%)
CIE-LAB	lab(89.00, -33.04, 69.00)
CIE-LCH	lch(89.00, 76.50, 115.59°)
OKLab	oklab(89.39% -0.0962 0.1561)
OKLCH	oklch(89.39% 0.183 121.6)
XYZ	xyz(56.1479, 74.1606, 19.1394)
Luminance	0.7416 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C9EE51 #7651EE

analogous

#EEC451 #C9EE51 #7BEE51

triadic

#C9EE51 #51C9EE #EE51C9

tetradic

#C9EE51 #51EEC4 #7651EE #EE517B

square

#C9EE51 #51EEC4 #7651EE #EE517B

split-complementary

#C9EE51 #517BEE #C451EE

monochromatic

#8DB311 #B8E919 #C9EE51 #DAF389 #ECF9C1

Accessibility & contrast

On white

1.33

#C9EE51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.83

#C9EE51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C9EE51

15.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C9EE51	#FFFFFF	#000000	##000000
##C9EE51	1.00	1.33	15.83	15.83
#FFFFFF	1.33	1.00	21.00	21.00
#000000	15.83	21.00	1.00	1.00
##000000	15.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FCE03B

Deuteranopia (green-blind)

#F7E05D

Tritanopia (blue-blind)

#D3E2CE

Achromatopsia (no color)

#DFDFDF

Design tokens & code

CSS

--color: #c9ee51;
/* rgb */ color: rgb(201, 238, 81);
/* oklch */ color: oklch(89.4% 0.183 121.6);

Tailwind

colors: {
  custom: {
    50: '#ddf38a',
    500: '#c9ee51',
    950: '#000000',
  },
}

SCSS

$custom: #c9ee51;
$custom-light: #ddf38a;
$custom-dark: #000000;

JSON

{
  "hex": "#c9ee51",
  "rgb": {
    "r": 201,
    "g": 238,
    "b": 81
  },
  "hsl": {
    "h": 74.14,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.89385,
    "c": 0.18335,
    "h": 121.6
  },
  "luminance": 0.74161
}

Semantic roles & 50–950 ramp

primary

#C9EE51

secondary

#4F30B3

accent

#07DF3A

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#15170C

muted

#84857F

Preview Lab

Preview with #C9EE51

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

Preview Lab → · Contrast checker → · Palette generator →