#ECF380#ECF380

#ECF380 is a very light, vivid yellow. Relative luminance 0.835; OKLCH L 93.5% C 0.139 H 111.9°. Best body text is #000000 at 17.70:1 contrast (WCAG AA passes).

Color values

HEX	#ECF380
RGB	rgb(236, 243, 128)
HSL	hsl(64, 83%, 73%)
HSV	hsv(64, 47%, 95%)
CMYK	cmyk(2.9%, 0%, 47.3%, 4.7%)
CIE-LAB	lab(93.23, -18.13, 54.23)
CIE-LCH	lch(93.23, 57.18, 108.48°)
OKLab	oklab(93.53% -0.0518 0.129)
OKLCH	oklch(93.53% 0.139 111.9)
XYZ	xyz(70.5402, 83.4939, 32.8179)
Luminance	0.8349 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF380 #8780F3

analogous

#F3C080 #ECF380 #B3F380

triadic

#ECF380 #80ECF3 #F380EC

tetradic

#ECF380 #80F3C0 #8780F3 #F380B3

square

#ECF380 #80F3C0 #8780F3 #F380B3

split-complementary

#ECF380 #80B3F3 #C080F3

monochromatic

#D7E315 #E4EE48 #ECF380 #F4F8B8 #FBFCE3

Accessibility & contrast

On white

1.19

#ECF380 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.70

#ECF380 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF380

17.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF380	#FFFFFF	#000000	##000000
##ECF380	1.00	1.19	17.70	17.70
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.70	21.00	1.00	1.00
##000000	17.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA76

Deuteranopia (green-blind)

#FFED86

Tritanopia (blue-blind)

#F9E7D8

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf380;
/* rgb */ color: rgb(236, 243, 128);
/* oklch */ color: oklch(93.5% 0.139 111.9);

Tailwind

colors: {
  custom: {
    50: '#f4f7a7',
    500: '#ecf380',
    950: '#000000',
  },
}

SCSS

$custom: #ecf380;
$custom-light: #f4f7a7;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf380",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 128
  },
  "hsl": {
    "h": 63.652,
    "s": 82.734,
    "l": 72.745
  },
  "oklch": {
    "l": 0.93533,
    "c": 0.13901,
    "h": 111.9
  },
  "luminance": 0.83493
}

Semantic roles & 50–950 ramp

primary

#ECF380

secondary

#5149CE

accent

#06DF14

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#171710

muted

#858580

Preview Lab

Preview with #ECF380

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

Preview Lab → · Contrast checker → · Palette generator →