#C9F251#C9F251

#C9F251 is a very light, vivid yellow-green. Relative luminance 0.765; OKLCH L 90.3% C 0.188 H 122.6°. Best body text is #000000 at 16.30:1 contrast (WCAG AA passes).

Color values

HEX	#C9F251
RGB	rgb(201, 242, 81)
HSL	hsl(75, 86%, 63%)
HSV	hsv(75, 67%, 95%)
CMYK	cmyk(16.9%, 0%, 66.5%, 5.1%)
CIE-LAB	lab(90.10, -34.87, 70.13)
CIE-LCH	lch(90.10, 78.32, 116.44°)
OKLab	oklab(90.27% -0.1013 0.1585)
OKLCH	oklch(90.27% 0.188 122.6)
XYZ	xyz(57.3254, 76.5157, 19.5319)
Luminance	0.7652 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C9F251 #7A51F2

analogous

#F2CB51 #C9F251 #78F251

triadic

#C9F251 #51C9F2 #F251C9

tetradic

#C9F251 #51F2CB #7A51F2 #F25178

square

#C9F251 #51F2CB #7A51F2 #F25178

split-complementary

#C9F251 #5178F2 #CB51F2

monochromatic

#8FBB0E #B7EE18 #C9F251 #DBF68A #ECFBC3

Accessibility & contrast

On white

1.29

#C9F251 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.30

#C9F251 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C9F251

16.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C9F251	#FFFFFF	#000000	##000000
##C9F251	1.00	1.29	16.30	16.30
#FFFFFF	1.29	1.00	21.00	21.00
#000000	16.30	21.00	1.00	1.00
##000000	16.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE439

Deuteranopia (green-blind)

#FAE35E

Tritanopia (blue-blind)

#D3E6D2

Achromatopsia (no color)

#E3E3E3

Design tokens & code

CSS

--color: #c9f251;
/* rgb */ color: rgb(201, 242, 81);
/* oklch */ color: oklch(90.3% 0.188 122.6);

Tailwind

colors: {
  custom: {
    50: '#ddf68a',
    500: '#c9f251',
    950: '#000000',
  },
}

SCSS

$custom: #c9f251;
$custom-light: #ddf68a;
$custom-dark: #000000;

JSON

{
  "hex": "#c9f251",
  "rgb": {
    "r": 201,
    "g": 242,
    "b": 81
  },
  "hsl": {
    "h": 75.28,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.90272,
    "c": 0.18806,
    "h": 122.6
  },
  "luminance": 0.76516
}

Semantic roles & 50–950 ramp

primary

#C9F251

secondary

#512EB9

accent

#03E33C

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#15170C

muted

#84857F

Preview Lab

Preview with #C9F251

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

Preview Lab → · Contrast checker → · Palette generator →