#ECF161#ECF161

#ECF161 is a very light, vivid yellow. Relative luminance 0.816; OKLCH L 92.8% C 0.164 H 111.1°. Best body text is #000000 at 17.32:1 contrast (WCAG AA passes).

Color values

HEX	#ECF161
RGB	rgb(236, 241, 97)
HSL	hsl(62, 84%, 66%)
HSV	hsv(62, 60%, 95%)
CMYK	cmyk(2.1%, 0%, 59.8%, 5.5%)
CIE-LAB	lab(92.40, -19.60, 66.99)
CIE-LCH	lch(92.40, 69.80, 106.31°)
OKLab	oklab(92.77% -0.0591 0.1533)
OKLCH	oklch(92.77% 0.164 111.1)
XYZ	xyz(68.2069, 81.6081, 23.4659)
Luminance	0.8161 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF161 #6661F1

analogous

#F1AE61 #ECF161 #A4F161

triadic

#ECF161 #61ECF1 #F161EC

tetradic

#ECF161 #61F1AE #6661F1 #F161A4

square

#ECF161 #61F1AE #6661F1 #F161A4

split-complementary

#ECF161 #61A4F1 #AE61F1

monochromatic

#C0C612 #E5EC29 #ECF161 #F3F699 #FAFBD1

Accessibility & contrast

On white

1.21

#ECF161 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.32

#ECF161 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF161

17.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF161	#FFFFFF	#000000	##000000
##ECF161	1.00	1.21	17.32	17.32
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.32	21.00	1.00	1.00
##000000	17.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE750

Deuteranopia (green-blind)

#FFEB6A

Tritanopia (blue-blind)

#FBE3D3

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #ecf161;
/* rgb */ color: rgb(236, 241, 97);
/* oklch */ color: oklch(92.8% 0.164 111.1);

Tailwind

colors: {
  custom: {
    50: '#f5f594',
    500: '#ecf161',
    950: '#000000',
  },
}

SCSS

$custom: #ecf161;
$custom-light: #f5f594;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf161",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 97
  },
  "hsl": {
    "h": 62.083,
    "s": 83.721,
    "l": 66.275
  },
  "oklch": {
    "l": 0.92773,
    "c": 0.16426,
    "h": 111.1
  },
  "luminance": 0.81607
}

Semantic roles & 50–950 ramp

primary

#ECF161

secondary

#3833C3

accent

#05E00D

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF161

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

Preview Lab → · Contrast checker → · Palette generator →