#C5F251#C5F251

#C5F251 is a very light, vivid yellow-green. Relative luminance 0.760; OKLCH L 90.0% C 0.190 H 123.7°. Best body text is #000000 at 16.19:1 contrast (WCAG AA passes).

Color values

HEX	#C5F251
RGB	rgb(197, 242, 81)
HSL	hsl(77, 86%, 63%)
HSV	hsv(77, 67%, 95%)
CMYK	cmyk(18.6%, 0%, 66.5%, 5.1%)
CIE-LAB	lab(89.84, -36.40, 69.79)
CIE-LCH	lch(89.84, 78.71, 117.55°)
OKLab	oklab(90% -0.1052 0.1578)
OKLCH	oklch(90% 0.19 123.7)
XYZ	xyz(56.2638, 75.9683, 19.4822)
Luminance	0.7597 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C5F251 #7E51F2

analogous

#F2CE51 #C5F251 #74F251

triadic

#C5F251 #51C5F2 #F251C5

tetradic

#C5F251 #51F2CE #7E51F2 #F25174

square

#C5F251 #51F2CE #7E51F2 #F25174

split-complementary

#C5F251 #5174F2 #CE51F2

monochromatic

#8ABB0E #B2EE18 #C5F251 #D8F68A #EBFBC3

Accessibility & contrast

On white

1.30

#C5F251 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.19

#C5F251 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C5F251

16.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C5F251	#FFFFFF	#000000	##000000
##C5F251	1.00	1.30	16.19	16.19
#FFFFFF	1.30	1.00	21.00	21.00
#000000	16.19	21.00	1.00	1.00
##000000	16.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE33A

Deuteranopia (green-blind)

#F9E25E

Tritanopia (blue-blind)

#CEE6D2

Achromatopsia (no color)

#E2E2E2

Design tokens & code

CSS

--color: #c5f251;
/* rgb */ color: rgb(197, 242, 81);
/* oklch */ color: oklch(90.0% 0.190 123.7);

Tailwind

colors: {
  custom: {
    50: '#daf68a',
    500: '#c5f251',
    950: '#000000',
  },
}

SCSS

$custom: #c5f251;
$custom-light: #daf68a;
$custom-dark: #000000;

JSON

{
  "hex": "#c5f251",
  "rgb": {
    "r": 197,
    "g": 242,
    "b": 81
  },
  "hsl": {
    "h": 76.77,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.90002,
    "c": 0.18971,
    "h": 123.7
  },
  "luminance": 0.75969
}

Semantic roles & 50–950 ramp

primary

#C5F251

secondary

#552EB9

accent

#03E341

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#15170C

muted

#84857F

Preview Lab

Preview with #C5F251

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

Preview Lab → · Contrast checker → · Palette generator →