#CEF251#CEF251

#CEF251 is a very light, vivid yellow-green. Relative luminance 0.772; OKLCH L 90.6% C 0.186 H 121.1°. Best body text is #000000 at 16.44:1 contrast (WCAG AA passes).

Color values

HEX	#CEF251
RGB	rgb(206, 242, 81)
HSL	hsl(73, 86%, 63%)
HSV	hsv(73, 67%, 95%)
CMYK	cmyk(14.9%, 0%, 66.5%, 5.1%)
CIE-LAB	lab(90.42, -32.94, 70.57)
CIE-LCH	lch(90.42, 77.88, 115.02°)
OKLab	oklab(90.62% -0.0962 0.1593)
OKLCH	oklch(90.62% 0.186 121.1)
XYZ	xyz(58.6918, 77.2202, 19.5960)
Luminance	0.7722 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CEF251 #7551F2

analogous

#F2C551 #CEF251 #7DF251

triadic

#CEF251 #51CEF2 #F251CE

tetradic

#CEF251 #51F2C5 #7551F2 #F2517D

square

#CEF251 #51F2C5 #7551F2 #F2517D

split-complementary

#CEF251 #517DF2 #C551F2

monochromatic

#94BB0E #BEEE18 #CEF251 #DEF68A #EEFBC3

Accessibility & contrast

On white

1.28

#CEF251 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.44

#CEF251 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #CEF251

16.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CEF251	#FFFFFF	#000000	##000000
##CEF251	1.00	1.28	16.44	16.44
#FFFFFF	1.28	1.00	21.00	21.00
#000000	16.44	21.00	1.00	1.00
##000000	16.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE439

Deuteranopia (green-blind)

#FCE45D

Tritanopia (blue-blind)

#D9E6D2

Achromatopsia (no color)

#E4E4E4

Design tokens & code

CSS

--color: #cef251;
/* rgb */ color: rgb(206, 242, 81);
/* oklch */ color: oklch(90.6% 0.186 121.1);

Tailwind

colors: {
  custom: {
    50: '#e0f68a',
    500: '#cef251',
    950: '#000000',
  },
}

SCSS

$custom: #cef251;
$custom-light: #e0f68a;
$custom-dark: #000000;

JSON

{
  "hex": "#cef251",
  "rgb": {
    "r": 206,
    "g": 242,
    "b": 81
  },
  "hsl": {
    "h": 73.416,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.90616,
    "c": 0.18608,
    "h": 121.1
  },
  "luminance": 0.7722
}

Semantic roles & 50–950 ramp

primary

#CEF251

secondary

#4D2EB9

accent

#03E335

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#16170C

muted

#84857F

Preview Lab

Preview with #CEF251

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

Preview Lab → · Contrast checker → · Palette generator →