#3748A2#3748A2
#3748A2 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.1% C 0.146 H 271.1°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).
Color values
| HEX | #3748A2 |
|---|---|
| RGB | rgb(55, 72, 162) |
| HSL | hsl(230, 49%, 43%) |
| HSV | hsv(230, 66%, 64%) |
| CMYK | cmyk(66%, 55.6%, 0%, 36.5%) |
| CIE-LAB | lab(34.10, 23.31, -50.87) |
| CIE-LCH | lch(34.10, 55.95, 294.62°) |
| OKLab | oklab(44.08% 0.0028 -0.1462) |
| OKLCH | oklch(44.08% 0.146 271.1) |
| XYZ | xyz(10.4123, 8.0547, 35.1814) |
| Luminance | 0.0806 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 4.24
Blueberry
#464196
ΔE00 4.38
Cobalt (survey)
#1E488F
ΔE00 5.03
Sapphire (survey)
#2138AB
ΔE00 5.21
Blue Blue
#2242C7
ΔE00 5.48
Ocean Blue
#4F42B5
ΔE00 5.83
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3748A2 #A29137
analogous
#377EA2 #3748A2 #5B37A2
triadic
#3748A2 #A23748 #48A237
tetradic
#3748A2 #A2377E #A29137 #37A25B
square
#3748A2 #A2377E #A29137 #37A25B
split-complementary
#3748A2 #A25B37 #7EA237
monochromatic
#181F47 #273474 #3748A2 #5264C4 #808DD4
Accessibility & contrast
On white
8.04
#3748A2 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.61
#3748A2 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3748A2
8.04:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3748A2 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3748A2 | 1.00 | 8.04 | 2.61 | 8.04 |
| #FFFFFF | 8.04 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.61 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.04 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0055A5
Deuteranopia (green-blind)
#004CA0
Tritanopia (blue-blind)
#005D6E
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #3748a2; /* rgb */ color: rgb(55, 72, 162); /* oklch */ color: oklch(44.1% 0.146 271.1);
Tailwind
colors: {
custom: {
50: '#7a7abe',
500: '#3748a2',
950: '#000000',
},
}SCSS
$custom: #3748a2; $custom-light: #7a7abe; $custom-dark: #000000;
JSON
{
"hex": "#3748a2",
"rgb": {
"r": 55,
"g": 72,
"b": 162
},
"hsl": {
"h": 230.467,
"s": 49.309,
"l": 42.549
},
"oklch": {
"l": 0.44077,
"c": 0.14622,
"h": 271.1
},
"luminance": 0.08056
}Semantic roles & 50–950 ramp
primary
#3748A2
secondary
#BDB278
accent
#C34FD9
background
#F7F7FB
surface
#EEEDF7
border
#C9C8D0
text
#0A0912
muted
#7C7B81