#AD3F21#AD3F21
#AD3F21 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.7% C 0.150 H 35.8°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).
Color values
| HEX | #AD3F21 |
|---|---|
| RGB | rgb(173, 63, 33) |
| HSL | hsl(13, 68%, 40%) |
| HSV | hsv(13, 81%, 68%) |
| CMYK | cmyk(0%, 63.6%, 80.9%, 32.2%) |
| CIE-LAB | lab(42.08, 43.48, 40.79) |
| CIE-LCH | lch(42.08, 59.61, 43.17°) |
| OKLab | oklab(51.72% 0.1219 0.0881) |
| OKLCH | oklch(51.72% 0.15 35.8) |
| XYZ | xyz(19.2877, 12.5518, 2.8457) |
| Luminance | 0.1255 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Rusty Red
#AF2F0D
ΔE00 3.20
Brick
#A03623
ΔE00 4.30
Rust (survey)
#A83C09
ΔE00 4.39
Rust
#B7410E
ΔE00 4.49
Brownish Red
#9E3623
ΔE00 4.59
Rust Red
#AA2704
ΔE00 4.74
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#AD3F21 #218FAD
analogous
#AD2149 #AD3F21 #AD8521
triadic
#AD3F21 #21AD3F #3F21AD
tetradic
#AD3F21 #49AD21 #218FAD #8521AD
square
#AD3F21 #49AD21 #218FAD #8521AD
split-complementary
#AD3F21 #21AD85 #2149AD
monochromatic
#461A0D #7A2C17 #AD3F21 #D85633 #E28166
Accessibility & contrast
On white
5.98
#AD3F21 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.51
#AD3F21 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #AD3F21
5.98:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##AD3F21 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##AD3F21 | 1.00 | 5.98 | 3.51 | 5.98 |
| #FFFFFF | 5.98 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.51 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.98 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5E541D
Deuteranopia (green-blind)
#796C1C
Tritanopia (blue-blind)
#BF2239
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #ad3f21; /* rgb */ color: rgb(173, 63, 33); /* oklch */ color: oklch(51.7% 0.150 35.8);
Tailwind
colors: {
custom: {
50: '#ce795f',
500: '#ad3f21',
950: '#000000',
},
}SCSS
$custom: #ad3f21; $custom-light: #ce795f; $custom-dark: #000000;
JSON
{
"hex": "#ad3f21",
"rgb": {
"r": 173,
"g": 63,
"b": 33
},
"hsl": {
"h": 12.857,
"s": 67.961,
"l": 40.392
},
"oklch": {
"l": 0.51718,
"c": 0.15041,
"h": 35.8
},
"luminance": 0.12549
}Semantic roles & 50–950 ramp
primary
#AD3F21
secondary
#62B2C7
accent
#C6EB3D
background
#FDF7F5
surface
#FBEEE9
border
#D4C9C5
text
#150904
muted
#837B79