#ECF35F#ECF35F

#ECF35F is a very light, vivid yellow. Relative luminance 0.828; OKLCH L 93.2% C 0.168 H 111.8°. Best body text is #000000 at 17.55:1 contrast (WCAG AA passes).

Color values

HEX	#ECF35F
RGB	rgb(236, 243, 95)
HSL	hsl(63, 86%, 66%)
HSV	hsv(63, 61%, 95%)
CMYK	cmyk(2.9%, 0%, 60.9%, 4.7%)
CIE-LAB	lab(92.91, -20.70, 68.36)
CIE-LCH	lch(92.91, 71.42, 106.85°)
OKLab	oklab(93.17% -0.0623 0.1559)
OKLCH	oklch(93.17% 0.168 111.8)
XYZ	xyz(68.7101, 82.7618, 23.1794)
Luminance	0.8276 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF35F #665FF3

analogous

#F3B05F #ECF35F #A2F35F

triadic

#ECF35F #5FECF3 #F35FEC

tetradic

#ECF35F #5FF3B0 #665FF3 #F35FA2

square

#ECF35F #5FF3B0 #665FF3 #F35FA2

split-complementary

#ECF35F #5FA2F3 #B05FF3

monochromatic

#C0C90F #E5EF26 #ECF35F #F3F798 #FAFCD1

Accessibility & contrast

On white

1.20

#ECF35F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.55

#ECF35F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF35F

17.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF35F	#FFFFFF	#000000	##000000
##ECF35F	1.00	1.20	17.55	17.55
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.55	21.00	1.00	1.00
##000000	17.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE94D

Deuteranopia (green-blind)

#FFED68

Tritanopia (blue-blind)

#FBE5D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf35f;
/* rgb */ color: rgb(236, 243, 95);
/* oklch */ color: oklch(93.2% 0.168 111.8);

Tailwind

colors: {
  custom: {
    50: '#f5f692',
    500: '#ecf35f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf35f;
$custom-light: #f5f692;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf35f",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 95
  },
  "hsl": {
    "h": 62.838,
    "s": 86.047,
    "l": 66.275
  },
  "oklch": {
    "l": 0.93174,
    "c": 0.16791,
    "h": 111.8
  },
  "luminance": 0.8276
}

Semantic roles & 50–950 ramp

primary

#ECF35F

secondary

#3831C5

accent

#03E30E

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF35F

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

Preview Lab → · Contrast checker → · Palette generator →