#01091B#01091B
#01091B is a very dark, muted blue. Relative luminance 0.003; OKLCH L 14.2% C 0.043 H 257.0°. Best body text is #FFFFFF at 19.88:1 contrast (WCAG AA passes).
Color values
| HEX | #01091B |
|---|---|
| RGB | rgb(1, 9, 27) |
| HSL | hsl(222, 93%, 5%) |
| HSV | hsv(222, 96%, 11%) |
| CMYK | cmyk(96.3%, 66.7%, 0%, 89.4%) |
| CIE-LAB | lab(2.54, 1.68, -10.94) |
| CIE-LCH | lch(2.54, 11.07, 278.73°) |
| OKLab | oklab(14.21% -0.0097 -0.0422) |
| OKLCH | oklch(14.21% 0.043 257) |
| XYZ | xyz(0.3080, 0.2809, 1.0747) |
| Luminance | 0.0028 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dark
#1B2431
ΔE00 7.33
Black
#000000
ΔE00 9.08
Almost Black
#070D0D
ΔE00 9.28
Dark Navy Blue
#00022E
ΔE00 9.77
Midnight
#03012D
ΔE00 10.00
Navy (survey)
#01153E
ΔE00 10.40
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#01091B #1B1301
analogous
#01161B #01091B #06011B
triadic
#01091B #1B0109 #091B01
tetradic
#01091B #1B0116 #1B1301 #011B06
square
#01091B #1B0116 #1B1301 #011B06
split-complementary
#01091B #1B0601 #161B01
monochromatic
#010A1E #010A1E #010A1E #031D56 #053091
Accessibility & contrast
On white
19.88
#01091B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.06
#01091B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #01091B
19.88:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##01091B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##01091B | 1.00 | 19.88 | 1.06 | 19.88 |
| #FFFFFF | 19.88 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.06 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 19.88 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#020B1C
Deuteranopia (green-blind)
#00081B
Tritanopia (blue-blind)
#000D10
Achromatopsia (no color)
#090909
Design tokens & code
CSS
--color: #01091b; /* rgb */ color: rgb(1, 9, 27); /* oklch */ color: oklch(14.2% 0.043 257.0);
Tailwind
colors: {
custom: {
50: '#464b57',
500: '#01091b',
950: '#000000',
},
}SCSS
$custom: #01091b; $custom-light: #464b57; $custom-dark: #000000;
JSON
{
"hex": "#01091b",
"rgb": {
"r": 1,
"g": 9,
"b": 27
},
"hsl": {
"h": 221.538,
"s": 92.857,
"l": 5.49
},
"oklch": {
"l": 0.1421,
"c": 0.0433,
"h": 257
},
"luminance": 0.00281
}Semantic roles & 50–950 ramp
primary
#01091B
secondary
#634B15
accent
#BD29FF
background
#F3F4F5
surface
#E5E7E9
border
#C1C3C5
text
#000103
muted
#767778