#0B173B#0B173B
#0B173B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.9% C 0.072 H 266.6°. Best body text is #FFFFFF at 17.50:1 contrast (WCAG AA passes).
Color values
| HEX | #0B173B |
|---|---|
| RGB | rgb(11, 23, 59) |
| HSL | hsl(225, 69%, 14%) |
| HSV | hsv(225, 81%, 23%) |
| CMYK | cmyk(81.4%, 61%, 0%, 76.9%) |
| CIE-LAB | lab(8.99, 9.79, -24.84) |
| CIE-LCH | lch(8.99, 26.70, 291.52°) |
| OKLab | oklab(21.9% -0.0043 -0.0714) |
| OKLCH | oklch(21.9% 0.072 266.6) |
| XYZ | xyz(1.2335, 0.9996, 4.2648) |
| Luminance | 0.0100 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy (survey)
#01153E
ΔE00 1.86
Dark Navy Blue
#00022E
ΔE00 4.24
Dark Navy
#000435
ΔE00 4.46
Midnight
#03012D
ΔE00 4.50
Navy Blue (survey)
#001146
ΔE00 4.53
Very Dark Blue
#000133
ΔE00 4.81
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#0B173B #3B2F0B
analogous
#0B2F3B #0B173B #170B3B
triadic
#0B173B #3B0B17 #173B0B
tetradic
#0B173B #3B0B2F #3B2F0B #0B3B17
square
#0B173B #3B0B2F #3B2F0B #0B3B17
split-complementary
#0B173B #3B170B #2F3B0B
monochromatic
#050A1A #050A1A #0B173B #152B6F #1E3FA2
Accessibility & contrast
On white
17.50
#0B173B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.20
#0B173B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #0B173B
17.50:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##0B173B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##0B173B | 1.00 | 17.50 | 1.20 | 17.50 |
| #FFFFFF | 17.50 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.20 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 17.50 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#021C3C
Deuteranopia (green-blind)
#00173A
Tritanopia (blue-blind)
#002026
Achromatopsia (no color)
#191919
Design tokens & code
CSS
--color: #0b173b; /* rgb */ color: rgb(11, 23, 59); /* oklch */ color: oklch(21.9% 0.072 266.6);
Tailwind
colors: {
custom: {
50: '#525371',
500: '#0b173b',
950: '#000000',
},
}SCSS
$custom: #0b173b; $custom-light: #525371; $custom-dark: #000000;
JSON
{
"hex": "#0b173b",
"rgb": {
"r": 11,
"g": 23,
"b": 59
},
"hsl": {
"h": 225,
"s": 68.571,
"l": 13.725
},
"oklch": {
"l": 0.21898,
"c": 0.07157,
"h": 266.6
},
"luminance": 0.01
}Semantic roles & 50–950 ramp
primary
#0B173B
secondary
#78642A
accent
#C03CEB
background
#F4F4F6
surface
#E7E7EC
border
#C3C3C7
text
#020207
muted
#78787A