#ECFB99#ECFB99

#ECFB99 is a very light, vivid yellow. Relative luminance 0.891; OKLCH L 95.6% C 0.123 H 115.9°. Best body text is #000000 at 18.83:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB99
RGB	rgb(236, 251, 153)
HSL	hsl(69, 92%, 79%)
HSV	hsv(69, 39%, 98%)
CMYK	cmyk(6%, 0%, 39%, 1.6%)
CIE-LAB	lab(95.63, -19.47, 45.29)
CIE-LCH	lch(95.63, 49.30, 113.26°)
OKLab	oklab(95.55% -0.0536 0.1105)
OKLCH	oklch(95.55% 0.123 115.9)
XYZ	xyz(74.8395, 89.1278, 43.3916)
Luminance	0.8913 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB99 #A899FB

analogous

#FBD999 #ECFB99 #BBFB99

triadic

#ECFB99 #99ECFB #FB99EC

tetradic

#ECFB99 #99FBD9 #A899FB #FB99BB

square

#ECFB99 #99FBD9 #A899FB #FB99BB

split-complementary

#ECFB99 #99BBFB #D999FB

monochromatic

#D6F623 #E1F95E #ECFB99 #F7FDD4 #FAFEE2

Accessibility & contrast

On white

1.12

#ECFB99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.83

#ECFB99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB99

18.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB99	#FFFFFF	#000000	##000000
##ECFB99	1.00	1.12	18.83	18.83
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.83	21.00	1.00	1.00
##000000	18.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF292

Deuteranopia (green-blind)

#FFF39E

Tritanopia (blue-blind)

#F6F1E3

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #ecfb99;
/* rgb */ color: rgb(236, 251, 153);
/* oklch */ color: oklch(95.6% 0.123 115.9);

Tailwind

colors: {
  custom: {
    50: '#f3fcb8',
    500: '#ecfb99',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb99;
$custom-light: #f3fcb8;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb99",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 153
  },
  "hsl": {
    "h": 69.184,
    "s": 92.453,
    "l": 79.216
  },
  "oklch": {
    "l": 0.95553,
    "c": 0.12286,
    "h": 115.9
  },
  "luminance": 0.89127
}

Semantic roles & 50–950 ramp

primary

#ECFB99

secondary

#705CDC

accent

#00E623

background

#FFFFFD

surface

#FEFFF8

border

#D6D7D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECFB99

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

Preview Lab → · Contrast checker → · Palette generator →