#0C174E#0C174E
#0C174E is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.9% C 0.102 H 268.4°. Best body text is #FFFFFF at 16.82:1 contrast (WCAG AA passes).
Color values
| HEX | #0C174E |
|---|---|
| RGB | rgb(12, 23, 78) |
| HSL | hsl(230, 73%, 18%) |
| HSV | hsv(230, 85%, 31%) |
| CMYK | cmyk(84.6%, 70.5%, 0%, 69.4%) |
| CIE-LAB | lab(10.86, 18.32, -35.13) |
| CIE-LCH | lch(10.86, 39.62, 297.55°) |
| OKLab | oklab(23.87% -0.0028 -0.1016) |
| OKLCH | oklch(23.87% 0.102 268.4) |
| XYZ | xyz(1.8327, 1.2408, 7.3492) |
| Luminance | 0.0124 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy Blue (survey)
#001146
ΔE00 2.02
Navy (survey)
#01153E
ΔE00 3.77
Dark Navy
#000435
ΔE00 5.18
Night Blue
#040348
ΔE00 5.35
Midnight Blue (survey)
#020035
ΔE00 5.43
Very Dark Blue
#000133
ΔE00 5.62
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#0C174E #4E430C
analogous
#0C384E #0C174E #220C4E
triadic
#0C174E #4E0C17 #174E0C
tetradic
#0C174E #4E0C38 #4E430C #0C4E22
square
#0C174E #4E0C38 #4E430C #0C4E22
split-complementary
#0C174E #4E220C #384E0C
monochromatic
#04081B #04081B #0C174E #142783 #1C36B8
Accessibility & contrast
On white
16.82
#0C174E on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.25
#0C174E on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #0C174E
16.82:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##0C174E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##0C174E | 1.00 | 16.82 | 1.25 | 16.82 |
| #FFFFFF | 16.82 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.25 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.82 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#002050
Deuteranopia (green-blind)
#001A4D
Tritanopia (blue-blind)
#002530
Achromatopsia (no color)
#1D1D1D
Design tokens & code
CSS
--color: #0c174e; /* rgb */ color: rgb(12, 23, 78); /* oklch */ color: oklch(23.9% 0.102 268.4);
Tailwind
colors: {
custom: {
50: '#585380',
500: '#0c174e',
950: '#000000',
},
}SCSS
$custom: #0c174e; $custom-light: #585380; $custom-dark: #000000;
JSON
{
"hex": "#0c174e",
"rgb": {
"r": 12,
"g": 23,
"b": 78
},
"hsl": {
"h": 230,
"s": 73.333,
"l": 17.647
},
"oklch": {
"l": 0.2387,
"c": 0.10166,
"h": 268.4
},
"luminance": 0.01241
}Semantic roles & 50–950 ramp
primary
#0C174E
secondary
#8A7A2C
accent
#D138F0
background
#F5F4F7
surface
#E9E7EE
border
#C5C3C9
text
#04020A
muted
#79787C