#183564#183564
#183564 is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.4% C 0.090 H 259.6°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).
Color values
| HEX | #183564 |
|---|---|
| RGB | rgb(24, 53, 100) |
| HSL | hsl(217, 61%, 24%) |
| HSV | hsv(217, 76%, 39%) |
| CMYK | cmyk(76%, 47%, 0%, 60.8%) |
| CIE-LAB | lab(22.51, 7.17, -30.93) |
| CIE-LCH | lch(22.51, 31.75, 283.05°) |
| OKLab | oklab(33.42% -0.0162 -0.0885) |
| OKLCH | oklch(33.42% 0.09 259.6) |
| XYZ | xyz(3.9492, 3.6601, 12.5525) |
| Luminance | 0.0366 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Marine
#042E60
ΔE00 2.40
Marine Blue
#01386A
ΔE00 2.96
Navy Blue
#1B2A4A
ΔE00 5.55
Darkish Blue
#014182
ΔE00 5.72
Twilight Blue
#0A437A
ΔE00 5.78
Prussian Blue
#004577
ΔE00 6.95
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#183564 #644718
analogous
#185B64 #183564 #211864
triadic
#183564 #641835 #356418
tetradic
#183564 #64185B #644718 #186421
square
#183564 #64185B #644718 #186421
split-complementary
#183564 #642118 #5B6418
monochromatic
#060D19 #0C1B33 #183564 #244F95 #3069C7
Accessibility & contrast
On white
12.12
#183564 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.73
#183564 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #183564
12.12:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##183564 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##183564 | 1.00 | 12.12 | 1.73 | 12.12 |
| #FFFFFF | 12.12 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.73 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 12.12 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#1E3A66
Deuteranopia (green-blind)
#0F3363
Tritanopia (blue-blind)
#004047
Achromatopsia (no color)
#363636
Design tokens & code
CSS
--color: #183564; /* rgb */ color: rgb(24, 53, 100); /* oklch */ color: oklch(33.4% 0.090 259.6);
Tailwind
colors: {
custom: {
50: '#606b90',
500: '#183564',
950: '#000000',
},
}SCSS
$custom: #183564; $custom-light: #606b90; $custom-dark: #000000;
JSON
{
"hex": "#183564",
"rgb": {
"r": 24,
"g": 53,
"b": 100
},
"hsl": {
"h": 217.105,
"s": 61.29,
"l": 24.314
},
"oklch": {
"l": 0.33422,
"c": 0.08999,
"h": 259.6
},
"luminance": 0.0366
}Semantic roles & 50–950 ramp
primary
#183564
secondary
#9A773E
accent
#A743E4
background
#F6F6F8
surface
#EBEBF0
border
#C6C6CB
text
#05060C
muted
#7A7A7D