#FF0103#FF0103
#FF0103 is a light, highly saturated red. Relative luminance 0.213; OKLCH L 62.8% C 0.257 H 29.1°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).
Color values
| HEX | #FF0103 |
|---|---|
| RGB | rgb(255, 1, 3) |
| HSL | hsl(360, 100%, 50%) |
| HSV | hsv(360, 100%, 100%) |
| CMYK | cmyk(0%, 99.6%, 98.8%, 0%) |
| CIE-LAB | lab(53.27, 80.04, 66.46) |
| CIE-LCH | lch(53.27, 104.04, 39.70°) |
| OKLab | oklab(62.82% 0.2249 0.1252) |
| OKLCH | oklch(62.82% 0.257 29.1) |
| XYZ | xyz(41.2729, 21.2956, 2.0235) |
| Luminance | 0.2129 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Fire Engine Red
#FE0002
ΔE00 0.24
Red
#FF0000
ΔE00 0.27
Bright Red
#FF000D
ΔE00 0.97
Vermillion
#F4320C
ΔE00 2.61
Orangish Red
#F43605
ΔE00 3.48
Tomato Red
#EC2D01
ΔE00 3.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#FF0103 #01FFFD
analogous
#FF0182 #FF0103 #FF7E01
triadic
#FF0103 #03FF01 #0103FF
tetradic
#FF0103 #82FF01 #01FFFD #7E01FF
square
#FF0103 #82FF01 #01FFFD #7E01FF
split-complementary
#FF0103 #01FF7E #0182FF
monochromatic
#860001 #C30002 #FF0103 #FF3E40 #FF7B7C
Accessibility & contrast
On white
3.99
#FF0103 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.26
#FF0103 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #FF0103
5.26:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##FF0103 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##FF0103 | 1.00 | 3.99 | 5.26 | 5.26 |
| #FFFFFF | 3.99 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.26 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.26 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6D5F00
Deuteranopia (green-blind)
#A39000
Tritanopia (blue-blind)
#FF0010
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #ff0103; /* rgb */ color: rgb(255, 1, 3); /* oklch */ color: oklch(62.8% 0.257 29.1);
Tailwind
colors: {
custom: {
50: '#ff7353',
500: '#ff0103',
950: '#000000',
},
}SCSS
$custom: #ff0103; $custom-light: #ff7353; $custom-dark: #000000;
JSON
{
"hex": "#ff0103",
"rgb": {
"r": 255,
"g": 1,
"b": 3
},
"hsl": {
"h": 359.528,
"s": 100,
"l": 50.196
},
"oklch": {
"l": 0.6282,
"c": 0.25741,
"h": 29.1
},
"luminance": 0.21288
}Semantic roles & 50–950 ramp
primary
#FF0103
secondary
#75E7E6
accent
#FFFD29
background
#FFF7F5
surface
#FFEEE9
border
#D7C9C5
text
#1C0A03
muted
#887C78