#ECF299#ECF299

#ECF299 is a very light, moderate yellow. Relative luminance 0.836; OKLCH L 93.7% C 0.112 H 111.7°. Best body text is #000000 at 17.73:1 contrast (WCAG AA passes).

Color values

HEX	#ECF299
RGB	rgb(236, 242, 153)
HSL	hsl(64, 77%, 77%)
HSV	hsv(64, 37%, 95%)
CMYK	cmyk(2.5%, 0%, 36.8%, 5.1%)
CIE-LAB	lab(93.29, -15.10, 42.30)
CIE-LCH	lch(93.29, 44.91, 109.64°)
OKLab	oklab(93.69% -0.0412 0.1037)
OKLCH	oklch(93.69% 0.112 111.7)
XYZ	xyz(72.0946, 83.6381, 42.4767)
Luminance	0.8364 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF299 #9F99F2

analogous

#F2CC99 #ECF299 #BFF299

triadic

#ECF299 #99ECF2 #F299EC

tetradic

#ECF299 #99F2CC #9F99F2 #F299BF

square

#ECF299 #99F2CC #9F99F2 #F299BF

split-complementary

#ECF299 #99BFF2 #CC99F2

monochromatic

#D8E42C #E2EB63 #ECF299 #F6F9CF #FAFCE4

Accessibility & contrast

On white

1.18

#ECF299 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.73

#ECF299 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF299

17.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF299	#FFFFFF	#000000	##000000
##ECF299	1.00	1.18	17.73	17.73
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.73	21.00	1.00	1.00
##000000	17.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA92

Deuteranopia (green-blind)

#FFED9D

Tritanopia (blue-blind)

#F7E8DC

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf299;
/* rgb */ color: rgb(236, 242, 153);
/* oklch */ color: oklch(93.7% 0.112 111.7);

Tailwind

colors: {
  custom: {
    50: '#f3f6b8',
    500: '#ecf299',
    950: '#000000',
  },
}

SCSS

$custom: #ecf299;
$custom-light: #f3f6b8;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf299",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 153
  },
  "hsl": {
    "h": 64.045,
    "s": 77.391,
    "l": 77.451
  },
  "oklch": {
    "l": 0.93688,
    "c": 0.11156,
    "h": 111.7
  },
  "luminance": 0.83637
}

Semantic roles & 50–950 ramp

primary

#ECF299

secondary

#6760D0

accent

#0CDA1A

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF299

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

Preview Lab → · Contrast checker → · Palette generator →