#A64437#A64437
#A64437 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.5% C 0.132 H 29.9°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #A64437 |
|---|---|
| RGB | rgb(166, 68, 55) |
| HSL | hsl(7, 50%, 43%) |
| HSV | hsv(7, 67%, 65%) |
| CMYK | cmyk(0%, 59%, 66.9%, 34.9%) |
| CIE-LAB | lab(42.03, 39.55, 28.16) |
| CIE-LCH | lch(42.03, 48.56, 35.45°) |
| OKLab | oklab(51.53% 0.1148 0.066) |
| OKLCH | oklch(51.53% 0.132 29.9) |
| XYZ | xyz(18.4844, 12.5195, 5.0568) |
| Luminance | 0.1252 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Brick
#A03623
ΔE00 4.50
Brownish Red
#9E3623
ΔE00 4.64
Dull Red
#BB3F3F
ΔE00 5.11
Brown
#A52A2A
ΔE00 5.37
Firebrick
#B22222
ΔE00 5.90
Reddish
#C44240
ΔE00 6.43
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#A64437 #3799A6
analogous
#A63761 #A64437 #A67B37
triadic
#A64437 #37A644 #4437A6
tetradic
#A64437 #61A637 #3799A6 #7B37A6
square
#A64437 #61A637 #3799A6 #7B37A6
split-complementary
#A64437 #37A67B #3761A6
monochromatic
#4A1E19 #783128 #A64437 #C66154 #D68C82
Accessibility & contrast
On white
5.99
#A64437 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.50
#A64437 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #A64437
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##A64437 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##A64437 | 1.00 | 5.99 | 3.50 | 5.99 |
| #FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.50 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5E5635
Deuteranopia (green-blind)
#766B35
Tritanopia (blue-blind)
#B63041
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #a64437; /* rgb */ color: rgb(166, 68, 55); /* oklch */ color: oklch(51.5% 0.132 29.9);
Tailwind
colors: {
custom: {
50: '#c77b6e',
500: '#a64437',
950: '#000000',
},
}SCSS
$custom: #a64437; $custom-light: #c77b6e; $custom-dark: #000000;
JSON
{
"hex": "#a64437",
"rgb": {
"r": 166,
"g": 68,
"b": 55
},
"hsl": {
"h": 7.027,
"s": 50.226,
"l": 43.333
},
"oklch": {
"l": 0.51533,
"c": 0.13237,
"h": 29.9
},
"luminance": 0.12517
}Semantic roles & 50–950 ramp
primary
#A64437
secondary
#7AB7BF
accent
#C9DA4E
background
#FDF7F6
surface
#FAEEEC
border
#D3C9C7
text
#140A07
muted
#837C7A