#40030B#40030B
#40030B is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.9% C 0.090 H 20.6°. Best body text is #FFFFFF at 16.99:1 contrast (WCAG AA passes).
Color values
| HEX | #40030B |
|---|---|
| RGB | rgb(64, 3, 11) |
| HSL | hsl(352, 91%, 13%) |
| HSV | hsv(352, 95%, 25%) |
| CMYK | cmyk(0%, 95.3%, 82.8%, 74.9%) |
| CIE-LAB | lab(10.41, 28.84, 11.82) |
| CIE-LCH | lch(10.41, 31.17, 22.29°) |
| OKLab | oklab(23.89% 0.0847 0.0318) |
| OKLCH | oklch(23.89% 0.09 20.6) |
| XYZ | xyz(2.2076, 1.1796, 0.4280) |
| Luminance | 0.0118 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Dark Maroon
#3C0008
ΔE00 1.27
Deep Brown
#410200
ΔE00 2.83
Mahogany
#4A0100
ΔE00 4.67
Dried Blood
#4B0101
ΔE00 4.70
Burgundy (survey)
#610023
ΔE00 7.97
Maroon (survey)
#650021
ΔE00 8.11
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#40030B #034038
analogous
#400329 #40030B #401903
triadic
#40030B #0B4003 #030B40
tetradic
#40030B #294003 #034038 #190340
square
#40030B #294003 #034038 #190340
split-complementary
#40030B #034019 #032940
monochromatic
#1D0105 #1D0105 #40030B #7A0615 #B5081F
Accessibility & contrast
On white
16.99
#40030B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.24
#40030B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #40030B
16.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##40030B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##40030B | 1.00 | 16.99 | 1.24 | 16.99 |
| #FFFFFF | 16.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.24 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#16140B
Deuteranopia (green-blind)
#252109
Tritanopia (blue-blind)
#470006
Achromatopsia (no color)
#1C1C1C
Design tokens & code
CSS
--color: #40030b; /* rgb */ color: rgb(64, 3, 11); /* oklch */ color: oklch(23.9% 0.090 20.6);
Tailwind
colors: {
custom: {
50: '#7a4b4b',
500: '#40030b',
950: '#000000',
},
}SCSS
$custom: #40030b; $custom-light: #7a4b4b; $custom-dark: #000000;
JSON
{
"hex": "#40030b",
"rgb": {
"r": 64,
"g": 3,
"b": 11
},
"hsl": {
"h": 352.131,
"s": 91.045,
"l": 13.137
},
"oklch": {
"l": 0.23891,
"c": 0.09045,
"h": 20.6
},
"luminance": 0.01179
}Semantic roles & 50–950 ramp
primary
#40030B
secondary
#1D8275
accent
#FFE329
background
#F7F4F4
surface
#EEE7E7
border
#C9C3C3
text
#0A0101
muted
#7C7777