#ECF199#ECF199

#ECF199 is a very light, moderate yellow. Relative luminance 0.830; OKLCH L 93.5% C 0.110 H 111.1°. Best body text is #000000 at 17.61:1 contrast (WCAG AA passes).

Color values

HEX	#ECF199
RGB	rgb(236, 241, 153)
HSL	hsl(63, 76%, 77%)
HSV	hsv(63, 37%, 95%)
CMYK	cmyk(2.1%, 0%, 36.5%, 5.5%)
CIE-LAB	lab(93.03, -14.61, 41.97)
CIE-LCH	lch(93.03, 44.44, 109.19°)
OKLab	oklab(93.48% -0.0398 0.1029)
OKLCH	oklch(93.48% 0.11 111.1)
XYZ	xyz(71.7978, 83.0445, 42.3778)
Luminance	0.8304 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF199 #9E99F1

analogous

#F1CA99 #ECF199 #C0F199

triadic

#ECF199 #99ECF1 #F199EC

tetradic

#ECF199 #99F1CA #9E99F1 #F199C0

square

#ECF199 #99F1CA #9E99F1 #F199C0

split-complementary

#ECF199 #99C0F1 #CA99F1

monochromatic

#D8E22D #E2EA63 #ECF199 #F6F8CF #FAFBE4

Accessibility & contrast

On white

1.19

#ECF199 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.61

#ECF199 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF199

17.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF199	#FFFFFF	#000000	##000000
##ECF199	1.00	1.19	17.61	17.61
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.61	21.00	1.00	1.00
##000000	17.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEEA92

Deuteranopia (green-blind)

#FEEC9D

Tritanopia (blue-blind)

#F7E7DB

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf199;
/* rgb */ color: rgb(236, 241, 153);
/* oklch */ color: oklch(93.5% 0.110 111.1);

Tailwind

colors: {
  custom: {
    50: '#f3f5b8',
    500: '#ecf199',
    950: '#000000',
  },
}

SCSS

$custom: #ecf199;
$custom-light: #f3f5b8;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf199",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 153
  },
  "hsl": {
    "h": 63.409,
    "s": 75.862,
    "l": 77.255
  },
  "oklch": {
    "l": 0.93482,
    "c": 0.11034,
    "h": 111.1
  },
  "luminance": 0.83043
}

Semantic roles & 50–950 ramp

primary

#ECF199

secondary

#6660CE

accent

#0DD819

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF199

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

Preview Lab → · Contrast checker → · Palette generator →