#CEF559#CEF559

#CEF559 is a very light, vivid yellow-green. Relative luminance 0.791; OKLCH L 91.3% C 0.184 H 122.1°. Best body text is #000000 at 16.83:1 contrast (WCAG AA passes).

Color values

HEX	#CEF559
RGB	rgb(206, 245, 89)
HSL	hsl(75, 89%, 65%)
HSV	hsv(75, 64%, 96%)
CMYK	cmyk(15.9%, 0%, 63.7%, 3.9%)
CIE-LAB	lab(91.30, -33.80, 68.41)
CIE-LCH	lch(91.30, 76.31, 116.29°)
OKLab	oklab(91.34% -0.0979 0.1558)
OKLCH	oklch(91.34% 0.184 122.1)
XYZ	xyz(59.9099, 79.1478, 21.5701)
Luminance	0.7915 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CEF559 #8059F5

analogous

#F5CE59 #CEF559 #80F559

triadic

#CEF559 #59CEF5 #F559CE

tetradic

#CEF559 #59F5CE #8059F5 #F55980

square

#CEF559 #59F5CE #8059F5 #F55980

split-complementary

#CEF559 #5980F5 #CE59F5

monochromatic

#99C80C #BDF21F #CEF559 #DFF893 #F0FCCC

Accessibility & contrast

On white

1.25

#CEF559 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.83

#CEF559 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #CEF559

16.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CEF559	#FFFFFF	#000000	##000000
##CEF559	1.00	1.25	16.83	16.83
#FFFFFF	1.25	1.00	21.00	21.00
#000000	16.83	21.00	1.00	1.00
##000000	16.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE745

Deuteranopia (green-blind)

#FEE664

Tritanopia (blue-blind)

#D8E9D5

Achromatopsia (no color)

#E6E6E6

Design tokens & code

CSS

--color: #cef559;
/* rgb */ color: rgb(206, 245, 89);
/* oklch */ color: oklch(91.3% 0.184 122.1);

Tailwind

colors: {
  custom: {
    50: '#e0f88f',
    500: '#cef559',
    950: '#000000',
  },
}

SCSS

$custom: #cef559;
$custom-light: #e0f88f;
$custom-dark: #000000;

JSON

{
  "hex": "#cef559",
  "rgb": {
    "r": 206,
    "g": 245,
    "b": 89
  },
  "hsl": {
    "h": 75,
    "s": 88.636,
    "l": 65.49
  },
  "oklch": {
    "l": 0.91343,
    "c": 0.18402,
    "h": 122.1
  },
  "luminance": 0.79148
}

Semantic roles & 50–950 ramp

primary

#CEF559

secondary

#542EC4

accent

#00E53A

background

#FEFFFC

surface

#FCFFF4

border

#D5D7CE

text

#16170D

muted

#84857F

Preview Lab

Preview with #CEF559

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

Preview Lab → · Contrast checker → · Palette generator →