#183D69#183D69
#183D69 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.8% C 0.087 H 254.6°. Best body text is #FFFFFF at 10.99:1 contrast (WCAG AA passes).
Color values
| HEX | #183D69 |
|---|---|
| RGB | rgb(24, 61, 105) |
| HSL | hsl(213, 63%, 25%) |
| HSV | hsv(213, 77%, 41%) |
| CMYK | cmyk(77.1%, 41.9%, 0%, 58.8%) |
| CIE-LAB | lab(25.42, 3.62, -29.53) |
| CIE-LCH | lch(25.42, 29.76, 276.99°) |
| OKLab | oklab(35.78% -0.0232 -0.0843) |
| OKLCH | oklch(35.78% 0.087 254.6) |
| XYZ | xyz(4.5943, 4.5511, 13.9982) |
| Luminance | 0.0455 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Marine Blue
#01386A
ΔE00 2.01
Twilight Blue
#0A437A
ΔE00 3.04
Darkish Blue
#014182
ΔE00 3.53
Prussian Blue
#004577
ΔE00 3.98
Marine
#042E60
ΔE00 4.79
Cobalt (survey)
#1E488F
ΔE00 5.79
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#183D69 #694418
analogous
#186569 #183D69 #1C1869
triadic
#183D69 #69183D #3D6918
tetradic
#183D69 #691865 #694418 #18691C
square
#183D69 #691865 #694418 #18691C
split-complementary
#183D69 #691C18 #656918
monochromatic
#060E19 #0D2037 #183D69 #235A9B #2F77CD
Accessibility & contrast
On white
10.99
#183D69 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.91
#183D69 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #183D69
10.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##183D69 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##183D69 | 1.00 | 10.99 | 1.91 | 10.99 |
| #FFFFFF | 10.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.91 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#28406B
Deuteranopia (green-blind)
#1C3968
Tritanopia (blue-blind)
#00474E
Achromatopsia (no color)
#3C3C3C
Design tokens & code
CSS
--color: #183d69; /* rgb */ color: rgb(24, 61, 105); /* oklch */ color: oklch(35.8% 0.087 254.6);
Tailwind
colors: {
custom: {
50: '#617294',
500: '#183d69',
950: '#000000',
},
}SCSS
$custom: #183d69; $custom-light: #617294; $custom-dark: #000000;
JSON
{
"hex": "#183d69",
"rgb": {
"r": 24,
"g": 61,
"b": 105
},
"hsl": {
"h": 212.593,
"s": 62.791,
"l": 25.294
},
"oklch": {
"l": 0.35778,
"c": 0.08741,
"h": 254.6
},
"luminance": 0.04552
}Semantic roles & 50–950 ramp
primary
#183D69
secondary
#9F733E
accent
#9B42E6
background
#F6F6F9
surface
#EBECF1
border
#C6C7CB
text
#05070D
muted
#7A7A7E