#ECF390#ECF390

#ECF390 is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 93.8% C 0.123 H 112.0°. Best body text is #000000 at 17.79:1 contrast (WCAG AA passes).

Color values

HEX	#ECF390
RGB	rgb(236, 243, 144)
HSL	hsl(64, 80%, 76%)
HSV	hsv(64, 41%, 95%)
CMYK	cmyk(2.9%, 0%, 40.7%, 4.7%)
CIE-LAB	lab(93.43, -16.56, 46.87)
CIE-LCH	lch(93.43, 49.71, 109.46°)
OKLab	oklab(93.76% -0.046 0.1136)
OKLCH	oklch(93.76% 0.123 112)
XYZ	xyz(71.6776, 83.9488, 38.8080)
Luminance	0.8395 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF390 #9790F3

analogous

#F3C890 #ECF390 #BAF390

triadic

#ECF390 #90ECF3 #F390EC

tetradic

#ECF390 #90F3C8 #9790F3 #F390BA

square

#ECF390 #90F3C8 #9790F3 #F390BA

split-complementary

#ECF390 #90BAF3 #C890F3

monochromatic

#D9E722 #E3ED59 #ECF390 #F5F9C7 #FAFCE3

Accessibility & contrast

On white

1.18

#ECF390 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.79

#ECF390 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF390

17.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF390	#FFFFFF	#000000	##000000
##ECF390	1.00	1.18	17.79	17.79
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.79	21.00	1.00	1.00
##000000	17.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB88

Deuteranopia (green-blind)

#FFED95

Tritanopia (blue-blind)

#F8E8DB

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf390;
/* rgb */ color: rgb(236, 243, 144);
/* oklch */ color: oklch(93.8% 0.123 112.0);

Tailwind

colors: {
  custom: {
    50: '#f3f7b2',
    500: '#ecf390',
    950: '#000000',
  },
}

SCSS

$custom: #ecf390;
$custom-light: #f3f7b2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf390",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 144
  },
  "hsl": {
    "h": 64.242,
    "s": 80.488,
    "l": 75.882
  },
  "oklch": {
    "l": 0.93755,
    "c": 0.12259,
    "h": 112
  },
  "luminance": 0.83948
}

Semantic roles & 50–950 ramp

primary

#ECF390

secondary

#6057D0

accent

#09DD18

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF390

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

Preview Lab → · Contrast checker → · Palette generator →