#181B4A#181B4A
#181B4A is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.1% C 0.086 H 275.6°. Best body text is #FFFFFF at 16.22:1 contrast (WCAG AA passes).
Color values
| HEX | #181B4A |
|---|---|
| RGB | rgb(24, 27, 74) |
| HSL | hsl(236, 51%, 19%) |
| HSV | hsv(236, 68%, 29%) |
| CMYK | cmyk(67.6%, 63.5%, 0%, 71%) |
| CIE-LAB | lab(12.43, 15.59, -29.77) |
| CIE-LCH | lch(12.43, 33.60, 297.64°) |
| OKLab | oklab(25.13% 0.0083 -0.0855) |
| OKLCH | oklch(25.13% 0.086 275.6) |
| XYZ | xyz(2.0042, 1.4723, 6.6558) |
| Luminance | 0.0147 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Navy Blue (survey)
#001146
ΔE00 3.76
Navy (survey)
#01153E
ΔE00 3.86
Dark Navy
#000435
ΔE00 5.77
Midnight Blue (survey)
#020035
ΔE00 6.15
Very Dark Blue
#000133
ΔE00 6.19
Dark Navy Blue
#00022E
ΔE00 6.59
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#181B4A #4A4718
analogous
#18344A #181B4A #2E184A
triadic
#181B4A #4A181B #1B4A18
tetradic
#181B4A #4A1834 #4A4718 #184A2E
square
#181B4A #4A1834 #4A4718 #184A2E
split-complementary
#181B4A #4A2E18 #344A18
monochromatic
#070817 #090A1C #181B4A #272C78 #363DA6
Accessibility & contrast
On white
16.22
#181B4A on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.29
#181B4A on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #181B4A
16.22:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##181B4A | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##181B4A | 1.00 | 16.22 | 1.29 | 16.22 |
| #FFFFFF | 16.22 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.29 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 16.22 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#00234C
Deuteranopia (green-blind)
#001E49
Tritanopia (blue-blind)
#00262F
Achromatopsia (no color)
#202020
Design tokens & code
CSS
--color: #181b4a; /* rgb */ color: rgb(24, 27, 74); /* oklch */ color: oklch(25.1% 0.086 275.6);
Tailwind
colors: {
custom: {
50: '#5b577d',
500: '#181b4a',
950: '#000000',
},
}SCSS
$custom: #181b4a; $custom-light: #5b577d; $custom-dark: #000000;
JSON
{
"hex": "#181b4a",
"rgb": {
"r": 24,
"g": 27,
"b": 74
},
"hsl": {
"h": 236.4,
"s": 51.02,
"l": 19.216
},
"oklch": {
"l": 0.25128,
"c": 0.08591,
"h": 275.6
},
"luminance": 0.01472
}Semantic roles & 50–950 ramp
primary
#181B4A
secondary
#817D3D
accent
#D24DDA
background
#F5F5F7
surface
#E9E9EE
border
#C5C5C9
text
#040309
muted
#79787B