#1B154A#1B154A
#1B154A is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.2% C 0.094 H 281.8°. Best body text is #FFFFFF at 16.76:1 contrast (WCAG AA passes).
Color values
| HEX | #1B154A |
|---|---|
| RGB | rgb(27, 21, 74) |
| HSL | hsl(247, 56%, 19%) |
| HSV | hsv(247, 72%, 29%) |
| CMYK | cmyk(63.5%, 71.6%, 0%, 71%) |
| CIE-LAB | lab(11.02, 20.56, -32.05) |
| CIE-LCH | lch(11.02, 38.08, 302.67°) |
| OKLab | oklab(24.16% 0.0193 -0.0922) |
| OKLCH | oklch(24.16% 0.094 281.8) |
| XYZ | xyz(1.9558, 1.2636, 6.6181) |
| Luminance | 0.0126 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy Blue (survey)
#001146
ΔE00 3.76
Dark Indigo
#1F0954
ΔE00 4.81
Night Blue
#040348
ΔE00 5.09
Navy (survey)
#01153E
ΔE00 5.48
Midnight Blue (survey)
#020035
ΔE00 5.61
Dark Navy
#000435
ΔE00 5.77
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B154A #444A15
analogous
#15294A #1B154A #35154A
triadic
#1B154A #4A1B15 #154A1B
tetradic
#1B154A #4A1529 #444A15 #154A35
square
#1B154A #4A1529 #444A15 #154A35
split-complementary
#1B154A #4A3515 #294A15
monochromatic
#090718 #0A071A #1B154A #2C237A #3E30A9
Accessibility & contrast
On white
16.76
#1B154A on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.25
#1B154A on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B154A
16.76:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B154A | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B154A | 1.00 | 16.76 | 1.25 | 16.76 |
| #FFFFFF | 16.76 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.25 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.76 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#001F4C
Deuteranopia (green-blind)
#001C49
Tritanopia (blue-blind)
#03222D
Achromatopsia (no color)
#1E1E1E
Design tokens & code
CSS
--color: #1b154a; /* rgb */ color: rgb(27, 21, 74); /* oklch */ color: oklch(24.2% 0.094 281.8);
Tailwind
colors: {
custom: {
50: '#5d527d',
500: '#1b154a',
950: '#000000',
},
}SCSS
$custom: #1b154a; $custom-light: #5d527d; $custom-dark: #000000;
JSON
{
"hex": "#1b154a",
"rgb": {
"r": 27,
"g": 21,
"b": 74
},
"hsl": {
"h": 246.792,
"s": 55.789,
"l": 18.627
},
"oklch": {
"l": 0.24157,
"c": 0.09418,
"h": 281.8
},
"luminance": 0.01264
}Semantic roles & 50–950 ramp
primary
#1B154A
secondary
#7A8239
accent
#DF49CE
background
#F5F4F7
surface
#E9E7EE
border
#C5C3C9
text
#05020A
muted
#79787C