#ECF37E#ECF37E

#ECF37E is a very light, vivid yellow. Relative luminance 0.834; OKLCH L 93.5% C 0.141 H 111.9°. Best body text is #000000 at 17.69:1 contrast (WCAG AA passes).

Color values

HEX	#ECF37E
RGB	rgb(236, 243, 126)
HSL	hsl(64, 83%, 72%)
HSV	hsv(64, 48%, 95%)
CMYK	cmyk(2.9%, 0%, 48.1%, 4.7%)
CIE-LAB	lab(93.21, -18.31, 55.14)
CIE-LCH	lch(93.21, 58.10, 108.37°)
OKLab	oklab(93.51% -0.0525 0.1308)
OKLCH	oklch(93.51% 0.141 111.9)
XYZ	xyz(70.4098, 83.4417, 32.1314)
Luminance	0.8344 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF37E #857EF3

analogous

#F3C07E #ECF37E #B1F37E

triadic

#ECF37E #7EECF3 #F37EEC

tetradic

#ECF37E #7EF3C0 #857EF3 #F37EB1

square

#ECF37E #7EF3C0 #857EF3 #F37EB1

split-complementary

#ECF37E #7EB1F3 #C07EF3

monochromatic

#D5E215 #E4EE46 #ECF37E #F4F8B6 #FBFCE3

Accessibility & contrast

On white

1.19

#ECF37E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.69

#ECF37E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF37E

17.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF37E	#FFFFFF	#000000	##000000
##ECF37E	1.00	1.19	17.69	17.69
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.69	21.00	1.00	1.00
##000000	17.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA74

Deuteranopia (green-blind)

#FFED84

Tritanopia (blue-blind)

#F9E7D8

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf37e;
/* rgb */ color: rgb(236, 243, 126);
/* oklch */ color: oklch(93.5% 0.141 111.9);

Tailwind

colors: {
  custom: {
    50: '#f4f7a6',
    500: '#ecf37e',
    950: '#000000',
  },
}

SCSS

$custom: #ecf37e;
$custom-light: #f4f7a6;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf37e",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 126
  },
  "hsl": {
    "h": 63.59,
    "s": 82.979,
    "l": 72.353
  },
  "oklch": {
    "l": 0.93507,
    "c": 0.14097,
    "h": 111.9
  },
  "luminance": 0.8344
}

Semantic roles & 50–950 ramp

primary

#ECF37E

secondary

#4F47CE

accent

#06DF13

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF37E

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

Preview Lab → · Contrast checker → · Palette generator →