#0C174B#0C174B
#0C174B is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.5% C 0.097 H 268.4°. Best body text is #FFFFFF at 16.94:1 contrast (WCAG AA passes).
Color values
| HEX | #0C174B |
|---|---|
| RGB | rgb(12, 23, 75) |
| HSL | hsl(230, 72%, 17%) |
| HSV | hsv(230, 84%, 29%) |
| CMYK | cmyk(84%, 69.3%, 0%, 70.6%) |
| CIE-LAB | lab(10.55, 17.03, -33.56) |
| CIE-LCH | lch(10.55, 37.63, 296.91°) |
| OKLab | oklab(23.55% -0.0027 -0.097) |
| OKLCH | oklch(23.55% 0.097 268.4) |
| XYZ | xyz(1.7276, 1.1988, 6.7956) |
| Luminance | 0.0120 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy Blue (survey)
#001146
ΔE00 1.90
Navy (survey)
#01153E
ΔE00 3.19
Dark Navy
#000435
ΔE00 4.76
Midnight Blue (survey)
#020035
ΔE00 5.11
Very Dark Blue
#000133
ΔE00 5.22
Night Blue
#040348
ΔE00 5.64
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#0C174B #4B400C
analogous
#0C374B #0C174B #210C4B
triadic
#0C174B #4B0C17 #174B0C
tetradic
#0C174B #4B0C37 #4B400C #0C4B21
square
#0C174B #4B0C37 #4B400C #0C4B21
split-complementary
#0C174B #4B210C #374B0C
monochromatic
#04081A #04081A #0C174B #142780 #1D37B5
Accessibility & contrast
On white
16.94
#0C174B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.24
#0C174B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #0C174B
16.94:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##0C174B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##0C174B | 1.00 | 16.94 | 1.24 | 16.94 |
| #FFFFFF | 16.94 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.24 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.94 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#00204D
Deuteranopia (green-blind)
#001A4A
Tritanopia (blue-blind)
#00252E
Achromatopsia (no color)
#1D1D1D
Design tokens & code
CSS
--color: #0c174b; /* rgb */ color: rgb(12, 23, 75); /* oklch */ color: oklch(23.5% 0.097 268.4);
Tailwind
colors: {
custom: {
50: '#57537e',
500: '#0c174b',
950: '#000000',
},
}SCSS
$custom: #0c174b; $custom-light: #57537e; $custom-dark: #000000;
JSON
{
"hex": "#0c174b",
"rgb": {
"r": 12,
"g": 23,
"b": 75
},
"hsl": {
"h": 229.524,
"s": 72.414,
"l": 17.059
},
"oklch": {
"l": 0.23549,
"c": 0.09707,
"h": 268.4
},
"luminance": 0.01199
}Semantic roles & 50–950 ramp
primary
#0C174B
secondary
#87772C
accent
#CF39EF
background
#F5F4F7
surface
#E9E7EE
border
#C5C3C9
text
#04020A
muted
#79787C