#CEF05B#CEF05B

#CEF05B is a very light, vivid yellow-green. Relative luminance 0.762; OKLCH L 90.3% C 0.177 H 121.0°. Best body text is #000000 at 16.24:1 contrast (WCAG AA passes).

Color values

HEX	#CEF05B
RGB	rgb(206, 240, 91)
HSL	hsl(74, 83%, 65%)
HSV	hsv(74, 62%, 94%)
CMYK	cmyk(14.2%, 0%, 62.1%, 5.9%)
CIE-LAB	lab(89.95, -31.36, 66.17)
CIE-LCH	lch(89.95, 73.23, 115.36°)
OKLab	oklab(90.26% -0.0909 0.1514)
OKLCH	oklch(90.26% 0.177 121)
XYZ	xyz(58.5028, 76.1974, 21.5210)
Luminance	0.7620 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CEF05B #7D5BF0

analogous

#F0C75B #CEF05B #84F05B

triadic

#CEF05B #5BCEF0 #F05BCE

tetradic

#CEF05B #5BF0C7 #7D5BF0 #F05B84

square

#CEF05B #5BF0C7 #7D5BF0 #F05B84

split-complementary

#CEF05B #5B84F0 #C75BF0

monochromatic

#97BF11 #BDEB23 #CEF05B #DFF593 #F0FACB

Accessibility & contrast

On white

1.29

#CEF05B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.24

#CEF05B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #CEF05B

16.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CEF05B	#FFFFFF	#000000	##000000
##CEF05B	1.00	1.29	16.24	16.24
#FFFFFF	1.29	1.00	21.00	21.00
#000000	16.24	21.00	1.00	1.00
##000000	16.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE349

Deuteranopia (green-blind)

#FAE265

Tritanopia (blue-blind)

#D8E4D1

Achromatopsia (no color)

#E2E2E2

Design tokens & code

CSS

--color: #cef05b;
/* rgb */ color: rgb(206, 240, 91);
/* oklch */ color: oklch(90.3% 0.177 121.0);

Tailwind

colors: {
  custom: {
    50: '#e0f590',
    500: '#cef05b',
    950: '#000000',
  },
}

SCSS

$custom: #cef05b;
$custom-light: #e0f590;
$custom-dark: #000000;

JSON

{
  "hex": "#cef05b",
  "rgb": {
    "r": 206,
    "g": 240,
    "b": 91
  },
  "hsl": {
    "h": 73.691,
    "s": 83.24,
    "l": 64.902
  },
  "oklch": {
    "l": 0.9026,
    "c": 0.17657,
    "h": 121
  },
  "luminance": 0.76197
}

Semantic roles & 50–950 ramp

primary

#CEF05B

secondary

#5232BD

accent

#06E038

background

#FEFFFC

surface

#FCFEF4

border

#D5D6CE

text

#16170D

muted

#84857F

Preview Lab

Preview with #CEF05B

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

Preview Lab → · Contrast checker → · Palette generator →