#ECF37D#ECF37D

#ECF37D is a very light, vivid yellow. Relative luminance 0.834; OKLCH L 93.5% C 0.142 H 111.9°. Best body text is #000000 at 17.68:1 contrast (WCAG AA passes).

Color values

HEX	#ECF37D
RGB	rgb(236, 243, 125)
HSL	hsl(64, 83%, 72%)
HSV	hsv(64, 49%, 95%)
CMYK	cmyk(2.9%, 0%, 48.6%, 4.7%)
CIE-LAB	lab(93.20, -18.40, 55.58)
CIE-LCH	lch(93.20, 58.55, 108.31°)
OKLab	oklab(93.49% -0.0529 0.1317)
OKLCH	oklch(93.49% 0.142 111.9)
XYZ	xyz(70.3456, 83.4160, 31.7933)
Luminance	0.8341 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF37D #847DF3

analogous

#F3BF7D #ECF37D #B1F37D

triadic

#ECF37D #7DECF3 #F37DEC

tetradic

#ECF37D #7DF3BF #847DF3 #F37DB1

square

#ECF37D #7DF3BF #847DF3 #F37DB1

split-complementary

#ECF37D #7DB1F3 #BF7DF3

monochromatic

#D5E115 #E4EE45 #ECF37D #F4F8B5 #FBFCE3

Accessibility & contrast

On white

1.19

#ECF37D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.68

#ECF37D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF37D

17.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF37D	#FFFFFF	#000000	##000000
##ECF37D	1.00	1.19	17.68	17.68
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.68	21.00	1.00	1.00
##000000	17.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA72

Deuteranopia (green-blind)

#FFED83

Tritanopia (blue-blind)

#F9E7D8

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf37d;
/* rgb */ color: rgb(236, 243, 125);
/* oklch */ color: oklch(93.5% 0.142 111.9);

Tailwind

colors: {
  custom: {
    50: '#f4f7a5',
    500: '#ecf37d',
    950: '#000000',
  },
}

SCSS

$custom: #ecf37d;
$custom-light: #f4f7a5;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf37d",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 125
  },
  "hsl": {
    "h": 63.559,
    "s": 83.099,
    "l": 72.157
  },
  "oklch": {
    "l": 0.93495,
    "c": 0.14193,
    "h": 111.9
  },
  "luminance": 0.83415
}

Semantic roles & 50–950 ramp

primary

#ECF37D

secondary

#4E46CE

accent

#06E013

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF37D

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

Preview Lab → · Contrast checker → · Palette generator →