#AD3F1B#AD3F1B
#AD3F1B is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.7% C 0.152 H 37.5°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #AD3F1B |
|---|---|
| RGB | rgb(173, 63, 27) |
| HSL | hsl(15, 73%, 39%) |
| HSV | hsv(15, 84%, 68%) |
| CMYK | cmyk(0%, 63.6%, 84.4%, 32.2%) |
| CIE-LAB | lab(42.03, 43.29, 43.66) |
| CIE-LCH | lch(42.03, 61.48, 45.24°) |
| OKLab | oklab(51.67% 0.1204 0.0923) |
| OKLCH | oklch(51.67% 0.152 37.5) |
| XYZ | xyz(19.2111, 12.5212, 2.4419) |
| Luminance | 0.1252 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Rusty Red
#AF2F0D
ΔE00 3.01
Rust (survey)
#A83C09
ΔE00 3.04
Rust
#B7410E
ΔE00 3.29
Russet
#A13905
ΔE00 4.18
Rust Red
#AA2704
ΔE00 4.51
Brick
#A03623
ΔE00 5.28
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#AD3F1B #1B89AD
analogous
#AD1B40 #AD3F1B #AD881B
triadic
#AD3F1B #1BAD3F #3F1BAD
tetradic
#AD3F1B #40AD1B #1B89AD #881BAD
square
#AD3F1B #40AD1B #1B89AD #881BAD
split-complementary
#AD3F1B #1BAD88 #1B40AD
monochromatic
#43180A #782C13 #AD3F1B #DD5528 #E67E5D
Accessibility & contrast
On white
5.99
#AD3F1B on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.50
#AD3F1B on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #AD3F1B
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##AD3F1B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##AD3F1B | 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)
#5F5415
Deuteranopia (green-blind)
#7A6C16
Tritanopia (blue-blind)
#BF2138
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #ad3f1b; /* rgb */ color: rgb(173, 63, 27); /* oklch */ color: oklch(51.7% 0.152 37.5);
Tailwind
colors: {
custom: {
50: '#ce795b',
500: '#ad3f1b',
950: '#000000',
},
}SCSS
$custom: #ad3f1b; $custom-light: #ce795b; $custom-dark: #000000;
JSON
{
"hex": "#ad3f1b",
"rgb": {
"r": 173,
"g": 63,
"b": 27
},
"hsl": {
"h": 14.795,
"s": 73,
"l": 39.216
},
"oklch": {
"l": 0.51668,
"c": 0.15169,
"h": 37.5
},
"luminance": 0.12518
}Semantic roles & 50–950 ramp
primary
#AD3F1B
secondary
#5AAECA
accent
#C2F038
background
#FDF7F5
surface
#FBEEE9
border
#D4C9C5
text
#150904
muted
#837B79