#ECF09A#ECF09A

#ECF09A is a very light, moderate yellow. Relative luminance 0.825; OKLCH L 93.3% C 0.108 H 110.6°. Best body text is #000000 at 17.50:1 contrast (WCAG AA passes).

Color values

HEX	#ECF09A
RGB	rgb(236, 240, 154)
HSL	hsl(63, 74%, 77%)
HSV	hsv(63, 36%, 94%)
CMYK	cmyk(1.7%, 0%, 35.8%, 5.9%)
CIE-LAB	lab(92.79, -14.00, 41.16)
CIE-LCH	lch(92.79, 43.47, 108.79°)
OKLab	oklab(93.29% -0.038 0.1011)
OKLCH	oklch(93.29% 0.108 110.6)
XYZ	xyz(71.5855, 82.4873, 42.7162)
Luminance	0.8249 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF09A #9E9AF0

analogous

#F0C99A #ECF09A #C1F09A

triadic

#ECF09A #9AECF0 #F09AEC

tetradic

#ECF09A #9AF0C9 #9E9AF0 #F09AC1

square

#ECF09A #9AF0C9 #9E9AF0 #F09AC1

split-complementary

#ECF09A #9AC1F0 #C99AF0

monochromatic

#D8E02F #E2E865 #ECF09A #F6F8CF #FAFBE4

Accessibility & contrast

On white

1.20

#ECF09A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.50

#ECF09A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF09A

17.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF09A	#FFFFFF	#000000	##000000
##ECF09A	1.00	1.20	17.50	17.50
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.50	21.00	1.00	1.00
##000000	17.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FDE994

Deuteranopia (green-blind)

#FDEC9E

Tritanopia (blue-blind)

#F7E6DA

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf09a;
/* rgb */ color: rgb(236, 240, 154);
/* oklch */ color: oklch(93.3% 0.108 110.6);

Tailwind

colors: {
  custom: {
    50: '#f3f4b9',
    500: '#ecf09a',
    950: '#000000',
  },
}

SCSS

$custom: #ecf09a;
$custom-light: #f3f4b9;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf09a",
  "rgb": {
    "r": 236,
    "g": 240,
    "b": 154
  },
  "hsl": {
    "h": 62.791,
    "s": 74.138,
    "l": 77.255
  },
  "oklch": {
    "l": 0.93292,
    "c": 0.108,
    "h": 110.6
  },
  "luminance": 0.82486
}

Semantic roles & 50–950 ramp

primary

#ECF09A

secondary

#6661CD

accent

#0FD618

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF09A

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

Preview Lab → · Contrast checker → · Palette generator →