#ECF361#ECF361

#ECF361 is a very light, vivid yellow. Relative luminance 0.828; OKLCH L 93.2% C 0.166 H 111.8°. Best body text is #000000 at 17.56:1 contrast (WCAG AA passes).

Color values

HEX	#ECF361
RGB	rgb(236, 243, 97)
HSL	hsl(63, 86%, 67%)
HSV	hsv(63, 60%, 95%)
CMYK	cmyk(2.9%, 0%, 60.1%, 4.7%)
CIE-LAB	lab(92.93, -20.57, 67.56)
CIE-LCH	lch(92.93, 70.62, 106.93°)
OKLab	oklab(93.19% -0.0618 0.1545)
OKLCH	oklch(93.19% 0.166 111.8)
XYZ	xyz(68.8022, 82.7987, 23.6643)
Luminance	0.8280 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF361 #6861F3

analogous

#F3B161 #ECF361 #A3F361

triadic

#ECF361 #61ECF3 #F361EC

tetradic

#ECF361 #61F3B1 #6861F3 #F361A3

square

#ECF361 #61F3B1 #6861F3 #F361A3

split-complementary

#ECF361 #61A3F3 #B161F3

monochromatic

#C1CA0F #E5EF28 #ECF361 #F3F79A #FAFCD3

Accessibility & contrast

On white

1.20

#ECF361 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.56

#ECF361 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF361

17.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF361	#FFFFFF	#000000	##000000
##ECF361	1.00	1.20	17.56	17.56
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.56	21.00	1.00	1.00
##000000	17.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE950

Deuteranopia (green-blind)

#FFED6A

Tritanopia (blue-blind)

#FBE5D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf361;
/* rgb */ color: rgb(236, 243, 97);
/* oklch */ color: oklch(93.2% 0.166 111.8);

Tailwind

colors: {
  custom: {
    50: '#f5f694',
    500: '#ecf361',
    950: '#000000',
  },
}

SCSS

$custom: #ecf361;
$custom-light: #f5f694;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf361",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 97
  },
  "hsl": {
    "h": 62.877,
    "s": 85.882,
    "l": 66.667
  },
  "oklch": {
    "l": 0.93192,
    "c": 0.16637,
    "h": 111.8
  },
  "luminance": 0.82797
}

Semantic roles & 50–950 ramp

primary

#ECF361

secondary

#3931C7

accent

#03E20E

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF361

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

Preview Lab → · Contrast checker → · Palette generator →