#ECF350#ECF350
#ECF350 is a very light, vivid yellow. Relative luminance 0.825; OKLCH L 93.1% C 0.178 H 111.8°. Best body text is #000000 at 17.50:1 contrast (WCAG AA passes).
Color values
| HEX | #ECF350 |
|---|---|
| RGB | rgb(236, 243, 80) |
| HSL | hsl(63, 87%, 63%) |
| HSV | hsv(63, 67%, 95%) |
| CMYK | cmyk(2.9%, 0%, 67.1%, 4.7%) |
| CIE-LAB | lab(92.80, -21.58, 74.04) |
| CIE-LCH | lch(92.80, 77.12, 106.25°) |
| OKLab | oklab(93.05% -0.0663 0.1657) |
| OKLCH | oklch(93.05% 0.178 111.8) |
| XYZ | xyz(68.0927, 82.5149, 19.9279) |
| Luminance | 0.8251 (WCAG relative) |
| Temperature | warm |
| Family | yellow |
Closest named colors
Off Yellow
#F1F33F
ΔE00 1.89
Banana Yellow
#FAFE4B
ΔE00 2.79
Canary
#FDFF63
ΔE00 2.89
Lemon (survey)
#FDFF52
ΔE00 3.00
Pastel Yellow
#FFFE71
ΔE00 3.59
Butter Yellow
#FFFD74
ΔE00 3.80
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#ECF350 #5750F3
analogous
#F3A950 #ECF350 #9AF350
triadic
#ECF350 #50ECF3 #F350EC
tetradic
#ECF350 #50F3A9 #5750F3 #F3509A
square
#ECF350 #50F3A9 #5750F3 #F3509A
split-complementary
#ECF350 #509AF3 #A950F3
monochromatic
#B4BC0D #E6EF17 #ECF350 #F2F789 #F8FBC3
Accessibility & contrast
On white
1.20
#ECF350 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
17.50
#ECF350 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #ECF350
17.50:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##ECF350 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##ECF350 | 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)
#FFE837
Deuteranopia (green-blind)
#FFEC5C
Tritanopia (blue-blind)
#FCE5D3
Achromatopsia (no color)
#EAEAEA
Design tokens & code
CSS
--color: #ecf350; /* rgb */ color: rgb(236, 243, 80); /* oklch */ color: oklch(93.1% 0.178 111.8);
Tailwind
colors: {
custom: {
50: '#f6f68a',
500: '#ecf350',
950: '#000000',
},
}SCSS
$custom: #ecf350; $custom-light: #f6f68a; $custom-dark: #000000;
JSON
{
"hex": "#ecf350",
"rgb": {
"r": 236,
"g": 243,
"b": 80
},
"hsl": {
"h": 62.577,
"s": 87.166,
"l": 63.333
},
"oklch": {
"l": 0.93052,
"c": 0.17846,
"h": 111.8
},
"luminance": 0.82513
}Semantic roles & 50–950 ramp
primary
#ECF350
secondary
#332DBA
accent
#02E40B
background
#FFFFFC
surface
#FFFEF4
border
#D7D6CE
text
#18170C
muted
#86857F