#ECF381#ECF381
#ECF381 is a very light, vivid yellow. Relative luminance 0.835; OKLCH L 93.5% C 0.138 H 111.9°. Best body text is #000000 at 17.70:1 contrast (WCAG AA passes).
Color values
| HEX | #ECF381 |
|---|---|
| RGB | rgb(236, 243, 129) |
| HSL | hsl(64, 83%, 73%) |
| HSV | hsv(64, 47%, 95%) |
| CMYK | cmyk(2.9%, 0%, 46.9%, 4.7%) |
| CIE-LAB | lab(93.24, -18.04, 53.78) |
| CIE-LCH | lch(93.24, 56.72, 108.54°) |
| OKLab | oklab(93.55% -0.0515 0.1281) |
| OKLCH | oklch(93.55% 0.138 111.9) |
| XYZ | xyz(70.6063, 83.5203, 33.1662) |
| Luminance | 0.8352 (WCAG relative) |
| Temperature | warm |
| Family | yellow |
Closest named colors
Yellowish Tan
#FCFC81
ΔE00 2.96
Pale Yellow
#FFFF84
ΔE00 3.40
Manilla
#FFFA86
ΔE00 3.47
Faded Yellow
#FEFF7F
ΔE00 3.52
Butter
#FFFF81
ΔE00 3.55
Banana (survey)
#FFFF7E
ΔE00 3.72
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#ECF381 #8881F3
analogous
#F3C181 #ECF381 #B3F381
triadic
#ECF381 #81ECF3 #F381EC
tetradic
#ECF381 #81F3C1 #8881F3 #F381B3
square
#ECF381 #81F3C1 #8881F3 #F381B3
split-complementary
#ECF381 #81B3F3 #C181F3
monochromatic
#D7E416 #E4EE49 #ECF381 #F4F8B9 #FBFCE3
Accessibility & contrast
On white
1.19
#ECF381 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
17.70
#ECF381 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #ECF381
17.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##ECF381 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##ECF381 | 1.00 | 1.19 | 17.70 | 17.70 |
| #FFFFFF | 1.19 | 1.00 | 21.00 | 21.00 |
| #000000 | 17.70 | 21.00 | 1.00 | 1.00 |
| ##000000 | 17.70 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#FFEA77
Deuteranopia (green-blind)
#FFED87
Tritanopia (blue-blind)
#F9E7D9
Achromatopsia (no color)
#ECECEC
Design tokens & code
CSS
--color: #ecf381; /* rgb */ color: rgb(236, 243, 129); /* oklch */ color: oklch(93.5% 0.138 111.9);
Tailwind
colors: {
custom: {
50: '#f4f7a8',
500: '#ecf381',
950: '#000000',
},
}SCSS
$custom: #ecf381; $custom-light: #f4f7a8; $custom-dark: #000000;
JSON
{
"hex": "#ecf381",
"rgb": {
"r": 236,
"g": 243,
"b": 129
},
"hsl": {
"h": 63.684,
"s": 82.609,
"l": 72.941
},
"oklch": {
"l": 0.93546,
"c": 0.13803,
"h": 111.9
},
"luminance": 0.83519
}Semantic roles & 50–950 ramp
primary
#ECF381
secondary
#524ACF
accent
#06DF14
background
#FFFFFD
surface
#FFFEF7
border
#D7D6D0
text
#171710
muted
#858581