#C9F257#C9F257

#C9F257 is a very light, vivid yellow-green. Relative luminance 0.766; OKLCH L 90.3% C 0.184 H 122.8°. Best body text is #000000 at 16.32:1 contrast (WCAG AA passes).

Color values

HEX	#C9F257
RGB	rgb(201, 242, 87)
HSL	hsl(76, 86%, 65%)
HSV	hsv(76, 64%, 95%)
CMYK	cmyk(16.9%, 0%, 64%, 5.1%)
CIE-LAB	lab(90.14, -34.48, 67.87)
CIE-LCH	lch(90.14, 76.13, 116.93°)
OKLab	oklab(90.32% -0.0996 0.1545)
OKLCH	oklch(90.32% 0.184 122.8)
XYZ	xyz(57.5604, 76.6097, 20.7697)
Luminance	0.7661 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C9F257 #8057F2

analogous

#F2CE57 #C9F257 #7CF257

triadic

#C9F257 #57C9F2 #F257C9

tetradic

#C9F257 #57F2CE #8057F2 #F2577C

square

#C9F257 #57F2CE #8057F2 #F2577C

split-complementary

#C9F257 #577CF2 #CE57F2

monochromatic

#91C00F #B7EE1E #C9F257 #DBF690 #EEFBC9

Accessibility & contrast

On white

1.29

#C9F257 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.32

#C9F257 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C9F257

16.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C9F257	#FFFFFF	#000000	##000000
##C9F257	1.00	1.29	16.32	16.32
#FFFFFF	1.29	1.00	21.00	21.00
#000000	16.32	21.00	1.00	1.00
##000000	16.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE442

Deuteranopia (green-blind)

#FAE363

Tritanopia (blue-blind)

#D3E6D2

Achromatopsia (no color)

#E3E3E3

Design tokens & code

CSS

--color: #c9f257;
/* rgb */ color: rgb(201, 242, 87);
/* oklch */ color: oklch(90.3% 0.184 122.8);

Tailwind

colors: {
  custom: {
    50: '#ddf68d',
    500: '#c9f257',
    950: '#000000',
  },
}

SCSS

$custom: #c9f257;
$custom-light: #ddf68d;
$custom-dark: #000000;

JSON

{
  "hex": "#c9f257",
  "rgb": {
    "r": 201,
    "g": 242,
    "b": 87
  },
  "hsl": {
    "h": 75.871,
    "s": 85.635,
    "l": 64.51
  },
  "oklch": {
    "l": 0.90321,
    "c": 0.18388,
    "h": 122.8
  },
  "luminance": 0.7661
}

Semantic roles & 50–950 ramp

primary

#C9F257

secondary

#5530BE

accent

#03E23E

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#15170D

muted

#84857F

Preview Lab

Preview with #C9F257

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

Preview Lab → · Contrast checker → · Palette generator →