#373AB5#373AB5
#373AB5 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.2% C 0.189 H 274.1°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).
Color values
| HEX | #373AB5 |
|---|---|
| RGB | rgb(55, 58, 181) |
| HSL | hsl(239, 53%, 46%) |
| HSV | hsv(239, 70%, 71%) |
| CMYK | cmyk(69.6%, 68%, 0%, 29%) |
| CIE-LAB | lab(32.20, 39.02, -65.31) |
| CIE-LCH | lch(32.20, 76.08, 300.86°) |
| OKLab | oklab(43.17% 0.0134 -0.1887) |
| OKLCH | oklch(43.17% 0.189 274.1) |
| XYZ | xyz(11.4263, 7.1735, 44.4895) |
| Luminance | 0.0717 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.79
Ocean Blue
#4F42B5
ΔE00 3.63
Blue Blue
#2242C7
ΔE00 3.70
Blue With A Hint Of Purple
#533CC6
ΔE00 4.52
Blurple
#5539CC
ΔE00 5.24
Blueberry
#464196
ΔE00 5.59
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373AB5 #B5B237
analogous
#3779B5 #373AB5 #7337B5
triadic
#373AB5 #B5373A #3AB537
tetradic
#373AB5 #B53779 #B5B237 #37B573
square
#373AB5 #B53779 #B5B237 #37B573
split-complementary
#373AB5 #B57337 #79B537
monochromatic
#1A1C57 #292B86 #373AB5 #5C5FCD #8B8DDC
Accessibility & contrast
On white
8.62
#373AB5 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.43
#373AB5 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373AB5
8.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373AB5 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373AB5 | 1.00 | 8.62 | 2.43 | 8.62 |
| #FFFFFF | 8.62 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.43 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.62 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0052B9
Deuteranopia (green-blind)
#0046B3
Tritanopia (blue-blind)
#005B73
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #373ab5; /* rgb */ color: rgb(55, 58, 181); /* oklch */ color: oklch(43.2% 0.189 274.1);
Tailwind
colors: {
custom: {
50: '#7f71cc',
500: '#373ab5',
950: '#000000',
},
}SCSS
$custom: #373ab5; $custom-light: #7f71cc; $custom-dark: #000000;
JSON
{
"hex": "#373ab5",
"rgb": {
"r": 55,
"g": 58,
"b": 181
},
"hsl": {
"h": 238.571,
"s": 53.39,
"l": 46.275
},
"oklch": {
"l": 0.43166,
"c": 0.18916,
"h": 274.1
},
"luminance": 0.07175
}Semantic roles & 50–950 ramp
primary
#373AB5
secondary
#C6C482
accent
#D94BDD
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0B0714
muted
#7C7A82