#1F3D76#1F3D76
#1F3D76 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.104 H 261.8°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).
Color values
| HEX | #1F3D76 |
|---|---|
| RGB | rgb(31, 61, 118) |
| HSL | hsl(219, 58%, 29%) |
| HSV | hsv(219, 74%, 46%) |
| CMYK | cmyk(73.7%, 48.3%, 0%, 53.7%) |
| CIE-LAB | lab(26.55, 10.01, -35.99) |
| CIE-LCH | lch(26.55, 37.36, 285.55°) |
| OKLab | oklab(37.01% -0.0148 -0.1031) |
| OKLCH | oklch(37.01% 0.104 261.8) |
| XYZ | xyz(5.5027, 4.9362, 17.7988) |
| Luminance | 0.0494 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 3.40
Marine Blue
#01386A
ΔE00 3.60
Twilight Blue
#0A437A
ΔE00 3.86
Cobalt (survey)
#1E488F
ΔE00 4.64
Marine
#042E60
ΔE00 5.22
Prussian Blue
#004577
ΔE00 5.46
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F3D76 #76581F
analogous
#1F6976 #1F3D76 #2D1F76
triadic
#1F3D76 #761F3D #3D761F
tetradic
#1F3D76 #761F69 #76581F #1F762D
square
#1F3D76 #761F69 #76581F #1F762D
split-complementary
#1F3D76 #762D1F #69761F
monochromatic
#060D18 #122446 #1F3D76 #2C56A6 #4272CD
Accessibility & contrast
On white
10.57
#1F3D76 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.99
#1F3D76 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F3D76
10.57:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F3D76 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F3D76 | 1.00 | 10.57 | 1.99 | 10.57 |
| #FFFFFF | 10.57 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.57 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#204378
Deuteranopia (green-blind)
#0D3B75
Tritanopia (blue-blind)
#004A53
Achromatopsia (no color)
#3F3F3F
Design tokens & code
CSS
--color: #1f3d76; /* rgb */ color: rgb(31, 61, 118); /* oklch */ color: oklch(37.0% 0.104 261.8);
Tailwind
colors: {
custom: {
50: '#67729e',
500: '#1f3d76',
950: '#000000',
},
}SCSS
$custom: #1f3d76; $custom-light: #67729e; $custom-dark: #000000;
JSON
{
"hex": "#1f3d76",
"rgb": {
"r": 31,
"g": 61,
"b": 118
},
"hsl": {
"h": 219.31,
"s": 58.389,
"l": 29.216
},
"oklch": {
"l": 0.37012,
"c": 0.10417,
"h": 261.8
},
"luminance": 0.04937
}Semantic roles & 50–950 ramp
primary
#1F3D76
secondary
#AA8847
accent
#AC46E2
background
#F6F6F9
surface
#EBECF2
border
#C6C7CC
text
#07070E
muted
#7A7A7E