#631D0F#631D0F
#631D0F is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.1% C 0.104 H 33.2°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).
Color values
| HEX | #631D0F |
|---|---|
| RGB | rgb(99, 29, 15) |
| HSL | hsl(10, 74%, 22%) |
| HSV | hsv(10, 85%, 39%) |
| CMYK | cmyk(0%, 70.7%, 84.8%, 61.2%) |
| CIE-LAB | lab(22.18, 30.80, 26.21) |
| CIE-LCH | lch(22.18, 40.44, 40.40°) |
| OKLab | oklab(34.09% 0.087 0.057) |
| OKLCH | oklch(34.09% 0.104 33.2) |
| XYZ | xyz(5.6718, 3.5667, 0.8416) |
| Luminance | 0.0357 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Reddy Brown
#6E1005
ΔE00 3.45
Blood
#770001
ΔE00 5.63
Rosewood
#65000B
ΔE00 5.66
Maroon
#800000
ΔE00 6.88
Chestnut
#742802
ΔE00 7.08
Indian Red
#850E04
ΔE00 7.39
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#631D0F #0F5563
analogous
#630F2B #631D0F #63470F
triadic
#631D0F #0F631D #1D0F63
tetradic
#631D0F #2B630F #0F5563 #470F63
square
#631D0F #2B630F #0F5563 #470F63
split-complementary
#631D0F #0F6347 #0F2B63
monochromatic
#1B0804 #2E0D07 #631D0F #982D17 #CD3C1F
Accessibility & contrast
On white
12.26
#631D0F on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.71
#631D0F on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #631D0F
12.26:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##631D0F | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##631D0F | 1.00 | 12.26 | 1.71 | 12.26 |
| #FFFFFF | 12.26 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.71 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 12.26 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#312B0D
Deuteranopia (green-blind)
#433B0C
Tritanopia (blue-blind)
#6E081A
Achromatopsia (no color)
#353535
Design tokens & code
CSS
--color: #631d0f; /* rgb */ color: rgb(99, 29, 15); /* oklch */ color: oklch(34.1% 0.104 33.2);
Tailwind
colors: {
custom: {
50: '#965d4e',
500: '#631d0f',
950: '#000000',
},
}SCSS
$custom: #631d0f; $custom-light: #965d4e; $custom-dark: #000000;
JSON
{
"hex": "#631d0f",
"rgb": {
"r": 99,
"g": 29,
"b": 15
},
"hsl": {
"h": 10,
"s": 73.684,
"l": 22.353
},
"oklch": {
"l": 0.34091,
"c": 0.104,
"h": 33.2
},
"luminance": 0.03566
}Semantic roles & 50–950 ramp
primary
#631D0F
secondary
#328A9C
accent
#D2F037
background
#F9F5F4
surface
#F2E9E7
border
#CCC5C3
text
#0F0401
muted
#7E7977