#ECF290#ECF290

#ECF290 is a very light, vivid yellow. Relative luminance 0.834; OKLCH L 93.5% C 0.121 H 111.6°. Best body text is #000000 at 17.67:1 contrast (WCAG AA passes).

Color values

HEX	#ECF290
RGB	rgb(236, 242, 144)
HSL	hsl(64, 79%, 76%)
HSV	hsv(64, 40%, 95%)
CMYK	cmyk(2.5%, 0%, 40.5%, 5.1%)
CIE-LAB	lab(93.17, -16.07, 46.54)
CIE-LCH	lch(93.17, 49.24, 109.05°)
OKLab	oklab(93.55% -0.0446 0.1129)
OKLCH	oklch(93.55% 0.121 111.6)
XYZ	xyz(71.3791, 83.3519, 38.7085)
Luminance	0.8335 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF290 #9690F2

analogous

#F2C790 #ECF290 #BBF290

triadic

#ECF290 #90ECF2 #F290EC

tetradic

#ECF290 #90F2C7 #9690F2 #F290BB

square

#ECF290 #90F2C7 #9690F2 #F290BB

split-complementary

#ECF290 #90BBF2 #C790F2

monochromatic

#D9E522 #E3EC59 #ECF290 #F5F8C7 #FAFCE4

Accessibility & contrast

On white

1.19

#ECF290 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.67

#ECF290 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF290

17.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF290	#FFFFFF	#000000	##000000
##ECF290	1.00	1.19	17.67	17.67
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.67	21.00	1.00	1.00
##000000	17.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA88

Deuteranopia (green-blind)

#FFED95

Tritanopia (blue-blind)

#F8E7DA

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf290;
/* rgb */ color: rgb(236, 242, 144);
/* oklch */ color: oklch(93.5% 0.121 111.6);

Tailwind

colors: {
  custom: {
    50: '#f3f6b2',
    500: '#ecf290',
    950: '#000000',
  },
}

SCSS

$custom: #ecf290;
$custom-light: #f3f6b2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf290",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 144
  },
  "hsl": {
    "h": 63.673,
    "s": 79.032,
    "l": 75.686
  },
  "oklch": {
    "l": 0.93548,
    "c": 0.1214,
    "h": 111.6
  },
  "luminance": 0.83351
}

Semantic roles & 50–950 ramp

primary

#ECF290

secondary

#5F57CF

accent

#0ADB17

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF290

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

Preview Lab → · Contrast checker → · Palette generator →