#1B103B#1B103B
#1B103B is a very dark, moderate violet. Relative luminance 0.009; OKLCH L 21.7% C 0.079 H 290.0°. Best body text is #FFFFFF at 17.74:1 contrast (WCAG AA passes).
Color values
| HEX | #1B103B |
|---|---|
| RGB | rgb(27, 16, 59) |
| HSL | hsl(255, 57%, 15%) |
| HSV | hsv(255, 73%, 23%) |
| CMYK | cmyk(54.2%, 72.9%, 0%, 76.9%) |
| CIE-LAB | lab(8.30, 18.59, -25.89) |
| CIE-LCH | lch(8.30, 31.87, 305.68°) |
| OKLab | oklab(21.74% 0.027 -0.0741) |
| OKLCH | oklch(21.74% 0.079 290) |
| XYZ | xyz(1.4265, 0.9193, 4.2391) |
| Luminance | 0.0092 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Midnight Blue (survey)
#020035
ΔE00 5.36
Midnight
#03012D
ΔE00 5.64
Dark Navy
#000435
ΔE00 5.66
Navy Blue (survey)
#001146
ΔE00 5.74
Very Dark Blue
#000133
ΔE00 5.76
Dark Navy Blue
#00022E
ΔE00 6.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B103B #303B10
analogous
#101B3B #1B103B #31103B
triadic
#1B103B #3B1B10 #103B1B
tetradic
#1B103B #3B101B #303B10 #103B31
square
#1B103B #3B101B #303B10 #103B31
split-complementary
#1B103B #3B3110 #1B3B10
monochromatic
#0B0718 #0B0718 #1B103B #311D6B #472A9B
Accessibility & contrast
On white
17.74
#1B103B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.18
#1B103B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B103B
17.74:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B103B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B103B | 1.00 | 17.74 | 1.18 | 17.74 |
| #FFFFFF | 17.74 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.18 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 17.74 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#00193C
Deuteranopia (green-blind)
#00173A
Tritanopia (blue-blind)
#111A23
Achromatopsia (no color)
#181818
Design tokens & code
CSS
--color: #1b103b; /* rgb */ color: rgb(27, 16, 59); /* oklch */ color: oklch(21.7% 0.079 290.0);
Tailwind
colors: {
custom: {
50: '#5b4e71',
500: '#1b103b',
950: '#000000',
},
}SCSS
$custom: #1b103b; $custom-light: #5b4e71; $custom-dark: #000000;
JSON
{
"hex": "#1b103b",
"rgb": {
"r": 27,
"g": 16,
"b": 59
},
"hsl": {
"h": 255.349,
"s": 57.333,
"l": 14.706
},
"oklch": {
"l": 0.21742,
"c": 0.07883,
"h": 290
},
"luminance": 0.00919
}Semantic roles & 50–950 ramp
primary
#1B103B
secondary
#647532
accent
#E147B9
background
#F5F4F6
surface
#E9E7EC
border
#C5C3C7
text
#040108
muted
#79777B