#CEFF59#CEFF59

#CEFF59 is a very light, vivid yellow-green. Relative luminance 0.854; OKLCH L 93.6% C 0.196 H 124.3°. Best body text is #000000 at 18.07:1 contrast (WCAG AA passes).

Color values

HEX	#CEFF59
RGB	rgb(206, 255, 89)
HSL	hsl(78, 100%, 67%)
HSV	hsv(78, 65%, 100%)
CMYK	cmyk(19.2%, 0%, 65.1%, 0%)
CIE-LAB	lab(94.04, -38.32, 71.30)
CIE-LCH	lch(94.04, 80.94, 118.25°)
OKLab	oklab(93.55% -0.1103 0.1619)
OKLCH	oklch(93.55% 0.196 124.3)
XYZ	xyz(63.0172, 85.3626, 22.6059)
Luminance	0.8536 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CEFF59 #8A59FF

analogous

#FFDD59 #CEFF59 #7BFF59

triadic

#CEFF59 #59CEFF #FF59CE

tetradic

#CEFF59 #59FFDD #8A59FF #FF597B

square

#CEFF59 #59FFDD #8A59FF #FF597B

split-complementary

#CEFF59 #597BFF #DD59FF

monochromatic

#9CDE00 #BCFF1C #CEFF59 #E0FF96 #F2FFD3

Accessibility & contrast

On white

1.16

#CEFF59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.07

#CEFF59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #CEFF59

18.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CEFF59	#FFFFFF	#000000	##000000
##CEFF59	1.00	1.16	18.07	18.07
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.07	21.00	1.00	1.00
##000000	18.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF42

Deuteranopia (green-blind)

#FFED66

Tritanopia (blue-blind)

#D7F3DD

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #ceff59;
/* rgb */ color: rgb(206, 255, 89);
/* oklch */ color: oklch(93.6% 0.196 124.3);

Tailwind

colors: {
  custom: {
    50: '#e0ff90',
    500: '#ceff59',
    950: '#000000',
  },
}

SCSS

$custom: #ceff59;
$custom-light: #e0ff90;
$custom-dark: #000000;

JSON

{
  "hex": "#ceff59",
  "rgb": {
    "r": 206,
    "g": 255,
    "b": 89
  },
  "hsl": {
    "h": 77.711,
    "s": 100,
    "l": 67.451
  },
  "oklch": {
    "l": 0.93552,
    "c": 0.19595,
    "h": 124.3
  },
  "luminance": 0.85363
}

Semantic roles & 50–950 ramp

primary

#CEFF59

secondary

#5A26D6

accent

#00E644

background

#FEFFFC

surface

#FCFFF4

border

#D5D7CE

text

#16180D

muted

#84867F

Preview Lab

Preview with #CEFF59

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

Preview Lab → · Contrast checker → · Palette generator →