#1F3A82#1F3A82
#1F3A82 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.3% C 0.126 H 265.2°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).
Color values
| HEX | #1F3A82 |
|---|---|
| RGB | rgb(31, 58, 130) |
| HSL | hsl(224, 61%, 32%) |
| HSV | hsv(224, 76%, 51%) |
| CMYK | cmyk(76.2%, 55.4%, 0%, 49%) |
| CIE-LAB | lab(26.53, 16.93, -43.58) |
| CIE-LCH | lch(26.53, 46.75, 291.24°) |
| OKLab | oklab(37.27% -0.0105 -0.1255) |
| OKLCH | oklch(37.27% 0.126 265.2) |
| XYZ | xyz(6.1060, 4.9285, 21.7443) |
| Luminance | 0.0493 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 4.52
Cobalt (survey)
#1E488F
ΔE00 4.96
Marine Blue
#01386A
ΔE00 5.28
Twilight Blue
#0A437A
ΔE00 5.52
Marine
#042E60
ΔE00 6.11
Sapphire (survey)
#2138AB
ΔE00 6.59
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F3A82 #82671F
analogous
#1F6C82 #1F3A82 #351F82
triadic
#1F3A82 #821F3A #3A821F
tetradic
#1F3A82 #821F6C #82671F #1F8235
square
#1F3A82 #821F6C #82671F #1F8235
split-complementary
#1F3A82 #82351F #6C821F
monochromatic
#070E1F #132451 #1F3A82 #2B50B3 #486ED3
Accessibility & contrast
On white
10.58
#1F3A82 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.99
#1F3A82 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F3A82
10.58:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F3A82 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F3A82 | 1.00 | 10.58 | 1.99 | 10.58 |
| #FFFFFF | 10.58 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.58 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#034485
Deuteranopia (green-blind)
#003A81
Tritanopia (blue-blind)
#004B58
Achromatopsia (no color)
#3F3F3F
Design tokens & code
CSS
--color: #1f3a82; /* rgb */ color: rgb(31, 58, 130); /* oklch */ color: oklch(37.3% 0.126 265.2);
Tailwind
colors: {
custom: {
50: '#6a6fa7',
500: '#1f3a82',
950: '#000000',
},
}SCSS
$custom: #1f3a82; $custom-light: #6a6fa7; $custom-dark: #000000;
JSON
{
"hex": "#1f3a82",
"rgb": {
"r": 31,
"g": 58,
"b": 130
},
"hsl": {
"h": 223.636,
"s": 61.491,
"l": 31.569
},
"oklch": {
"l": 0.37273,
"c": 0.12592,
"h": 265.2
},
"luminance": 0.04929
}Semantic roles & 50–950 ramp
primary
#1F3A82
secondary
#B59748
accent
#B943E5
background
#F6F6FA
surface
#ECECF4
border
#C7C7CE
text
#07070F
muted
#7A7A7F