#ECEF99#ECEF99

#ECEF99 is a very light, moderate yellow. Relative luminance 0.819; OKLCH L 93.1% C 0.108 H 110.0°. Best body text is #000000 at 17.37:1 contrast (WCAG AA passes).

Color values

HEX	#ECEF99
RGB	rgb(236, 239, 153)
HSL	hsl(62, 73%, 77%)
HSV	hsv(62, 36%, 94%)
CMYK	cmyk(1.3%, 0%, 36%, 6.3%)
CIE-LAB	lab(92.52, -13.62, 41.30)
CIE-LCH	lch(92.52, 43.49, 108.26°)
OKLab	oklab(93.07% -0.037 0.1014)
OKLCH	oklch(93.07% 0.108 110)
XYZ	xyz(71.2090, 81.8670, 42.1815)
Luminance	0.8187 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECEF99 #9C99EF

analogous

#EFC799 #ECEF99 #C1EF99

triadic

#ECEF99 #99ECEF #EF99EC

tetradic

#ECEF99 #99EFC7 #9C99EF #EF99C1

square

#ECEF99 #99EFC7 #9C99EF #EF99C1

split-complementary

#ECEF99 #99C1EF #C799EF

monochromatic

#D8DE2F #E2E764 #ECEF99 #F6F7CE #FAFBE5

Accessibility & contrast

On white

1.21

#ECEF99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.37

#ECEF99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECEF99

17.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECEF99	#FFFFFF	#000000	##000000
##ECEF99	1.00	1.21	17.37	17.37
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.37	21.00	1.00	1.00
##000000	17.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FCE893

Deuteranopia (green-blind)

#FDEB9D

Tritanopia (blue-blind)

#F7E5DA

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #ecef99;
/* rgb */ color: rgb(236, 239, 153);
/* oklch */ color: oklch(93.1% 0.108 110.0);

Tailwind

colors: {
  custom: {
    50: '#f3f4b8',
    500: '#ecef99',
    950: '#000000',
  },
}

SCSS

$custom: #ecef99;
$custom-light: #f3f4b8;
$custom-dark: #000000;

JSON

{
  "hex": "#ecef99",
  "rgb": {
    "r": 236,
    "g": 239,
    "b": 153
  },
  "hsl": {
    "h": 62.093,
    "s": 72.881,
    "l": 76.863
  },
  "oklch": {
    "l": 0.9307,
    "c": 0.10792,
    "h": 110
  },
  "luminance": 0.81866
}

Semantic roles & 50–950 ramp

primary

#ECEF99

secondary

#6461CC

accent

#11D517

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECEF99

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

Preview Lab → · Contrast checker → · Palette generator →