#ECF35C#ECF35C

#ECF35C is a very light, vivid yellow. Relative luminance 0.827; OKLCH L 93.1% C 0.170 H 111.8°. Best body text is #000000 at 17.54:1 contrast (WCAG AA passes).

Color values

HEX	#ECF35C
RGB	rgb(236, 243, 92)
HSL	hsl(63, 86%, 66%)
HSV	hsv(63, 62%, 95%)
CMYK	cmyk(2.9%, 0%, 62.1%, 4.7%)
CIE-LAB	lab(92.89, -20.89, 69.54)
CIE-LCH	lch(92.89, 72.61, 106.72°)
OKLab	oklab(93.15% -0.0632 0.158)
OKLCH	oklch(93.15% 0.17 111.8)
XYZ	xyz(68.5764, 82.7083, 22.4750)
Luminance	0.8271 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF35C #635CF3

analogous

#F3AE5C #ECF35C #A1F35C

triadic

#ECF35C #5CECF3 #F35CEC

tetradic

#ECF35C #5CF3AE #635CF3 #F35CA1

square

#ECF35C #5CF3AE #635CF3 #F35CA1

split-complementary

#ECF35C #5CA1F3 #AE5CF3

monochromatic

#BEC60F #E5EF23 #ECF35C #F3F795 #F9FBCE

Accessibility & contrast

On white

1.20

#ECF35C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.54

#ECF35C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF35C

17.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF35C	#FFFFFF	#000000	##000000
##ECF35C	1.00	1.20	17.54	17.54
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.54	21.00	1.00	1.00
##000000	17.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE949

Deuteranopia (green-blind)

#FFEC66

Tritanopia (blue-blind)

#FBE5D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf35c;
/* rgb */ color: rgb(236, 243, 92);
/* oklch */ color: oklch(93.1% 0.170 111.8);

Tailwind

colors: {
  custom: {
    50: '#f5f691',
    500: '#ecf35c',
    950: '#000000',
  },
}

SCSS

$custom: #ecf35c;
$custom-light: #f5f691;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf35c",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 92
  },
  "hsl": {
    "h": 62.781,
    "s": 86.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.93148,
    "c": 0.17015,
    "h": 111.8
  },
  "luminance": 0.82707
}

Semantic roles & 50–950 ramp

primary

#ECF35C

secondary

#3730C3

accent

#03E30D

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF35C

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

Preview Lab → · Contrast checker → · Palette generator →