#ECF99F#ECF99F

#ECF99F is a very light, moderate yellow. Relative luminance 0.881; OKLCH L 95.2% C 0.114 H 115.3°. Best body text is #000000 at 18.62:1 contrast (WCAG AA passes).

Color values

HEX	#ECF99F
RGB	rgb(236, 249, 159)
HSL	hsl(69, 88%, 80%)
HSV	hsv(69, 36%, 98%)
CMYK	cmyk(5.2%, 0%, 36.1%, 2.4%)
CIE-LAB	lab(95.20, -17.83, 41.80)
CIE-LCH	lch(95.20, 45.44, 113.10°)
OKLab	oklab(95.23% -0.0486 0.1028)
OKLCH	oklch(95.23% 0.114 115.3)
XYZ	xyz(74.7261, 88.0882, 45.8603)
Luminance	0.8809 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF99F #AC9FF9

analogous

#F9D99F #ECF99F #BFF99F

triadic

#ECF99F #9FECF9 #F99FEC

tetradic

#ECF99F #9FF9D9 #AC9FF9 #F99FBF

square

#ECF99F #9FF9D9 #AC9FF9 #F99FBF

split-complementary

#ECF99F #9FBFF9 #D99FF9

monochromatic

#D5F22C #E1F565 #ECF99F #F7FDD9 #F9FDE2

Accessibility & contrast

On white

1.13

#ECF99F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.62

#ECF99F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF99F

18.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF99F	#FFFFFF	#000000	##000000
##ECF99F	1.00	1.13	18.62	18.62
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.62	21.00	1.00	1.00
##000000	18.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF098

Deuteranopia (green-blind)

#FFF2A3

Tritanopia (blue-blind)

#F6EFE2

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecf99f;
/* rgb */ color: rgb(236, 249, 159);
/* oklch */ color: oklch(95.2% 0.114 115.3);

Tailwind

colors: {
  custom: {
    50: '#f3fbbc',
    500: '#ecf99f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf99f;
$custom-light: #f3fbbc;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf99f",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 159
  },
  "hsl": {
    "h": 68.667,
    "s": 88.235,
    "l": 80
  },
  "oklch": {
    "l": 0.95233,
    "c": 0.11369,
    "h": 115.3
  },
  "luminance": 0.88087
}

Semantic roles & 50–950 ramp

primary

#ECF99F

secondary

#7462DA

accent

#01E522

background

#FFFFFD

surface

#FEFFF8

border

#D6D7D1

text

#171712

muted

#858582

Preview Lab

Preview with #ECF99F

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

Preview Lab → · Contrast checker → · Palette generator →