#ECF09B#ECF09B

#ECF09B is a very light, moderate yellow. Relative luminance 0.825; OKLCH L 93.3% C 0.107 H 110.6°. Best body text is #000000 at 17.50:1 contrast (WCAG AA passes).

Color values

HEX	#ECF09B
RGB	rgb(236, 240, 155)
HSL	hsl(63, 74%, 77%)
HSV	hsv(63, 35%, 94%)
CMYK	cmyk(1.7%, 0%, 35.4%, 5.9%)
CIE-LAB	lab(92.80, -13.89, 40.68)
CIE-LCH	lch(92.80, 42.99, 108.85°)
OKLab	oklab(93.31% -0.0376 0.1)
OKLCH	oklch(93.31% 0.107 110.6)
XYZ	xyz(71.6692, 82.5207, 43.1566)
Luminance	0.8252 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF09B #9F9BF0

analogous

#F0CA9B #ECF09B #C1F09B

triadic

#ECF09B #9BECF0 #F09BEC

tetradic

#ECF09B #9BF0CA #9F9BF0 #F09BC1

square

#ECF09B #9BF0CA #9F9BF0 #F09BC1

split-complementary

#ECF09B #9BC1F0 #CA9BF0

monochromatic

#D8E031 #E2E866 #ECF09B #F6F8D0 #FAFBE4

Accessibility & contrast

On white

1.20

#ECF09B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.50

#ECF09B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF09B

17.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF09B	#FFFFFF	#000000	##000000
##ECF09B	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)

#FCE995

Deuteranopia (green-blind)

#FDEC9F

Tritanopia (blue-blind)

#F7E6DB

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf09b;
/* rgb */ color: rgb(236, 240, 155);
/* oklch */ color: oklch(93.3% 0.107 110.6);

Tailwind

colors: {
  custom: {
    50: '#f3f4b9',
    500: '#ecf09b',
    950: '#000000',
  },
}

SCSS

$custom: #ecf09b;
$custom-light: #f3f4b9;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf09b",
  "rgb": {
    "r": 236,
    "g": 240,
    "b": 155
  },
  "hsl": {
    "h": 62.824,
    "s": 73.913,
    "l": 77.451
  },
  "oklch": {
    "l": 0.93308,
    "c": 0.10687,
    "h": 110.6
  },
  "luminance": 0.8252
}

Semantic roles & 50–950 ramp

primary

#ECF09B

secondary

#6762CD

accent

#0FD619

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF09B

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

Preview Lab → · Contrast checker → · Palette generator →