#3A100B#3A100B
#3A100B is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.3% C 0.068 H 29.6°. Best body text is #FFFFFF at 16.68:1 contrast (WCAG AA passes).
Color values
| HEX | #3A100B |
|---|---|
| RGB | rgb(58, 16, 11) |
| HSL | hsl(6, 68%, 14%) |
| HSV | hsv(6, 81%, 23%) |
| CMYK | cmyk(0%, 72.4%, 81%, 77.3%) |
| CIE-LAB | lab(11.24, 20.42, 12.77) |
| CIE-LCH | lch(11.24, 24.09, 32.02°) |
| OKLab | oklab(24.26% 0.059 0.0335) |
| OKLCH | oklch(24.26% 0.068 29.6) |
| XYZ | xyz(1.9908, 1.2946, 0.4616) |
| Luminance | 0.0129 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Deep Brown
#410200
ΔE00 4.33
Dark Maroon
#3C0008
ΔE00 5.47
Mahogany
#4A0100
ΔE00 5.89
Dried Blood
#4B0101
ΔE00 6.03
Chocolate Brown
#411900
ΔE00 7.37
Chocolate (survey)
#3D1C02
ΔE00 8.90
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3A100B #0B353A
analogous
#3A0B1D #3A100B #3A270B
triadic
#3A100B #0B3A10 #100B3A
tetradic
#3A100B #1D3A0B #0B353A #270B3A
square
#3A100B #1D3A0B #0B353A #270B3A
split-complementary
#3A100B #0B3A27 #0B1D3A
monochromatic
#1A0705 #1A0705 #3A100B #6D1E15 #A12C1F
Accessibility & contrast
On white
16.68
#3A100B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.26
#3A100B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3A100B
16.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3A100B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3A100B | 1.00 | 16.68 | 1.26 | 16.68 |
| #FFFFFF | 16.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.26 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#1B180A
Deuteranopia (green-blind)
#26210A
Tritanopia (blue-blind)
#41070F
Achromatopsia (no color)
#1E1E1E
Design tokens & code
CSS
--color: #3a100b; /* rgb */ color: rgb(58, 16, 11); /* oklch */ color: oklch(24.3% 0.068 29.6);
Tailwind
colors: {
custom: {
50: '#74504b',
500: '#3a100b',
950: '#000000',
},
}SCSS
$custom: #3a100b; $custom-light: #74504b; $custom-dark: #000000;
JSON
{
"hex": "#3a100b",
"rgb": {
"r": 58,
"g": 16,
"b": 11
},
"hsl": {
"h": 6.383,
"s": 68.116,
"l": 13.529
},
"oklch": {
"l": 0.2426,
"c": 0.06783,
"h": 29.6
},
"luminance": 0.01294
}Semantic roles & 50–950 ramp
primary
#3A100B
secondary
#2A6F77
accent
#D8EB3D
background
#F7F4F4
surface
#EDE7E7
border
#C8C3C3
text
#090201
muted
#7B7877