#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
RGBrgb(201, 242, 81)
HSLhsl(75, 86%, 63%)
HSVhsv(75, 67%, 95%)
CMYKcmyk(16.9%, 0%, 66.5%, 5.1%)
CIE-LABlab(90.10, -34.87, 70.13)
CIE-LCHlch(90.10, 78.32, 116.44°)
OKLaboklab(90.27% -0.1013 0.1585)
OKLCHoklch(90.27% 0.188 122.6)
XYZxyz(57.3254, 76.5157, 19.5319)
Luminance0.7652 (WCAG relative)
Temperaturewarm
Familyyellow-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
##C9F2511.001.2916.3016.30
#FFFFFF1.291.0021.0021.00
#00000016.3021.001.001.00
##00000016.3021.001.001.00

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 →

#C9F251 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva