#A63138#A63138
#A63138 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.2% C 0.153 H 21.6°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).
Color values
| HEX | #A63138 |
|---|---|
| RGB | rgb(166, 49, 56) |
| HSL | hsl(356, 54%, 42%) |
| HSV | hsv(356, 70%, 65%) |
| CMYK | cmyk(0%, 70.5%, 66.3%, 34.9%) |
| CIE-LAB | lab(38.88, 48.09, 23.68) |
| CIE-LCH | lch(38.88, 53.61, 26.21°) |
| OKLab | oklab(49.18% 0.1419 0.0561) |
| OKLCH | oklch(49.18% 0.153 21.6) |
| XYZ | xyz(17.5398, 10.5917, 4.8614) |
| Luminance | 0.1059 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Brown
#A52A2A
ΔE00 3.57
Rouge
#AB1239
ΔE00 4.90
Lipstick Red
#C0022F
ΔE00 5.18
Cardinal
#C41E3A
ΔE00 5.45
Rose Red
#BE013C
ΔE00 5.73
Dull Red
#BB3F3F
ΔE00 5.79
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#A63138 #31A69F
analogous
#A63173 #A63138 #A66431
triadic
#A63138 #38A631 #3138A6
tetradic
#A63138 #73A631 #31A69F #6431A6
square
#A63138 #73A631 #31A69F #6431A6
split-complementary
#A63138 #31A664 #3173A6
monochromatic
#471518 #772328 #A63138 #CA4A52 #D87A7F
Accessibility & contrast
On white
6.74
#A63138 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.12
#A63138 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #A63138
6.74:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##A63138 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##A63138 | 1.00 | 6.74 | 3.12 | 6.74 |
| #FFFFFF | 6.74 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.12 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.74 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#514C37
Deuteranopia (green-blind)
#6F6535
Tritanopia (blue-blind)
#B60E35
Achromatopsia (no color)
#5C5C5C
Design tokens & code
CSS
--color: #a63138; /* rgb */ color: rgb(166, 49, 56); /* oklch */ color: oklch(49.2% 0.153 21.6);
Tailwind
colors: {
custom: {
50: '#c7716e',
500: '#a63138',
950: '#000000',
},
}SCSS
$custom: #a63138; $custom-light: #c7716e; $custom-dark: #000000;
JSON
{
"hex": "#a63138",
"rgb": {
"r": 166,
"g": 49,
"b": 56
},
"hsl": {
"h": 356.41,
"s": 54.419,
"l": 42.157
},
"oklch": {
"l": 0.49176,
"c": 0.15255,
"h": 21.6
},
"luminance": 0.10589
}Semantic roles & 50–950 ramp
primary
#A63138
secondary
#73C0BB
accent
#DED54A
background
#FDF7F6
surface
#FAEDEC
border
#D3C8C7
text
#140807
muted
#837B7A