#3F0310#3F0310
#3F0310 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.8% C 0.089 H 15.4°. Best body text is #FFFFFF at 17.05:1 contrast (WCAG AA passes).
Color values
| HEX | #3F0310 |
|---|---|
| RGB | rgb(63, 3, 16) |
| HSL | hsl(347, 91%, 13%) |
| HSV | hsv(347, 95%, 25%) |
| CMYK | cmyk(0%, 95.2%, 74.6%, 75.3%) |
| CIE-LAB | lab(10.26, 28.81, 9.11) |
| CIE-LCH | lch(10.26, 30.21, 17.55°) |
| OKLab | oklab(23.77% 0.0861 0.0238) |
| OKLCH | oklch(23.77% 0.089 15.4) |
| XYZ | xyz(2.1762, 1.1596, 0.5994) |
| Luminance | 0.0116 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Dark Maroon
#3C0008
ΔE00 1.34
Deep Brown
#410200
ΔE00 4.61
Mahogany
#4A0100
ΔE00 6.39
Dried Blood
#4B0101
ΔE00 6.40
Burgundy (survey)
#610023
ΔE00 7.42
Maroon (survey)
#650021
ΔE00 7.93
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F0310 #033F32
analogous
#3F032E #3F0310 #3F1403
triadic
#3F0310 #103F03 #03103F
tetradic
#3F0310 #2E3F03 #033F32 #14033F
square
#3F0310 #2E3F03 #033F32 #14033F
split-complementary
#3F0310 #033F14 #032E3F
monochromatic
#1D0107 #1D0107 #3F0310 #79061F #B4092E
Accessibility & contrast
On white
17.05
#3F0310 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.23
#3F0310 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3F0310
17.05:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F0310 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F0310 | 1.00 | 17.05 | 1.23 | 17.05 |
| #FFFFFF | 17.05 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.23 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 17.05 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#151410
Deuteranopia (green-blind)
#24200E
Tritanopia (blue-blind)
#460008
Achromatopsia (no color)
#1C1C1C
Design tokens & code
CSS
--color: #3f0310; /* rgb */ color: rgb(63, 3, 16); /* oklch */ color: oklch(23.8% 0.089 15.4);
Tailwind
colors: {
custom: {
50: '#794b4e',
500: '#3f0310',
950: '#000000',
},
}SCSS
$custom: #3f0310; $custom-light: #794b4e; $custom-dark: #000000;
JSON
{
"hex": "#3f0310",
"rgb": {
"r": 63,
"g": 3,
"b": 16
},
"hsl": {
"h": 347,
"s": 90.909,
"l": 12.941
},
"oklch": {
"l": 0.23769,
"c": 0.08936,
"h": 15.4
},
"luminance": 0.01159
}Semantic roles & 50–950 ramp
primary
#3F0310
secondary
#1D816B
accent
#FFD129
background
#F7F4F4
surface
#EEE7E7
border
#C9C3C3
text
#0A0101
muted
#7C7777