#ECF370#ECF370

#ECF370 is a very light, vivid yellow. Relative luminance 0.831; OKLCH L 93.3% C 0.154 H 111.8°. Best body text is #000000 at 17.62:1 contrast (WCAG AA passes).

Color values

HEX	#ECF370
RGB	rgb(236, 243, 112)
HSL	hsl(63, 85%, 70%)
HSV	hsv(63, 54%, 95%)
CMYK	cmyk(2.9%, 0%, 53.9%, 4.7%)
CIE-LAB	lab(93.06, -19.48, 61.30)
CIE-LCH	lch(93.06, 64.33, 107.63°)
OKLab	oklab(93.34% -0.0572 0.1429)
OKLCH	oklch(93.34% 0.154 111.8)
XYZ	xyz(69.5689, 83.1053, 27.7023)
Luminance	0.8310 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF370 #7770F3

analogous

#F3B970 #ECF370 #ABF370

triadic

#ECF370 #70ECF3 #F370EC

tetradic

#ECF370 #70F3B9 #7770F3 #F370AB

square

#ECF370 #70F3B9 #7770F3 #F370AB

split-complementary

#ECF370 #70ABF3 #B970F3

monochromatic

#CCD712 #E4EE38 #ECF370 #F4F8A8 #FBFCE1

Accessibility & contrast

On white

1.19

#ECF370 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.62

#ECF370 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF370

17.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF370	#FFFFFF	#000000	##000000
##ECF370	1.00	1.19	17.62	17.62
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.62	21.00	1.00	1.00
##000000	17.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE963

Deuteranopia (green-blind)

#FFED77

Tritanopia (blue-blind)

#FAE6D6

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf370;
/* rgb */ color: rgb(236, 243, 112);
/* oklch */ color: oklch(93.3% 0.154 111.8);

Tailwind

colors: {
  custom: {
    50: '#f5f69d',
    500: '#ecf370',
    950: '#000000',
  },
}

SCSS

$custom: #ecf370;
$custom-light: #f5f69d;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf370",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 112
  },
  "hsl": {
    "h": 63.206,
    "s": 84.516,
    "l": 69.608
  },
  "oklch": {
    "l": 0.93342,
    "c": 0.15393,
    "h": 111.8
  },
  "luminance": 0.83104
}

Semantic roles & 50–950 ramp

primary

#ECF370

secondary

#423BCD

accent

#05E110

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF370

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

Preview Lab → · Contrast checker → · Palette generator →