#373DAD#373DAD
#373DAD is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.175 H 273.9°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).
Color values
| HEX | #373DAD |
|---|---|
| RGB | rgb(55, 61, 173) |
| HSL | hsl(237, 52%, 45%) |
| HSV | hsv(237, 68%, 68%) |
| CMYK | cmyk(68.2%, 64.7%, 0%, 32.2%) |
| CIE-LAB | lab(32.18, 34.38, -60.57) |
| CIE-LCH | lch(32.18, 69.65, 299.58°) |
| OKLab | oklab(42.93% 0.012 -0.1748) |
| OKLCH | oklch(42.93% 0.175 273.9) |
| XYZ | xyz(10.7846, 7.1659, 40.3419) |
| Luminance | 0.0717 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.41
Ocean Blue
#4F42B5
ΔE00 3.71
Blue Blue
#2242C7
ΔE00 3.96
Blueberry
#464196
ΔE00 4.44
Blue With A Hint Of Purple
#533CC6
ΔE00 5.46
Darkslateblue
#483D8B
ΔE00 6.31
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373DAD #ADA737
analogous
#3778AD #373DAD #6C37AD
triadic
#373DAD #AD373D #3DAD37
tetradic
#373DAD #AD3778 #ADA737 #37AD6C
square
#373DAD #AD3778 #ADA737 #37AD6C
split-complementary
#373DAD #AD6C37 #78AD37
monochromatic
#191C50 #282D7F #373DAD #575DCA #868AD8
Accessibility & contrast
On white
8.63
#373DAD on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.43
#373DAD on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373DAD
8.63:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373DAD | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373DAD | 1.00 | 8.63 | 2.43 | 8.63 |
| #FFFFFF | 8.63 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.43 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.63 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051B1
Deuteranopia (green-blind)
#0046AB
Tritanopia (blue-blind)
#005A6F
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #373dad; /* rgb */ color: rgb(55, 61, 173); /* oklch */ color: oklch(42.9% 0.175 273.9);
Tailwind
colors: {
custom: {
50: '#7d73c6',
500: '#373dad',
950: '#000000',
},
}SCSS
$custom: #373dad; $custom-light: #7d73c6; $custom-dark: #000000;
JSON
{
"hex": "#373dad",
"rgb": {
"r": 55,
"g": 61,
"b": 173
},
"hsl": {
"h": 236.949,
"s": 51.754,
"l": 44.706
},
"oklch": {
"l": 0.42934,
"c": 0.17523,
"h": 273.9
},
"luminance": 0.07167
}Semantic roles & 50–950 ramp
primary
#373DAD
secondary
#C2BF7D
accent
#D44DDB
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0813
muted
#7C7B82