#373AB3#373AB3
#373AB3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.187 H 274.2°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).
Color values
| HEX | #373AB3 |
|---|---|
| RGB | rgb(55, 58, 179) |
| HSL | hsl(239, 53%, 46%) |
| HSV | hsv(239, 69%, 70%) |
| CMYK | cmyk(69.3%, 67.6%, 0%, 29.8%) |
| CIE-LAB | lab(32.02, 38.33, -64.42) |
| CIE-LCH | lch(32.02, 74.96, 300.75°) |
| OKLab | oklab(42.98% 0.0136 -0.1861) |
| OKLCH | oklch(42.98% 0.187 274.2) |
| XYZ | xyz(11.2226, 7.0920, 43.4165) |
| Luminance | 0.0709 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.63
Ocean Blue
#4F42B5
ΔE00 3.67
Blue Blue
#2242C7
ΔE00 3.85
Blue With A Hint Of Purple
#533CC6
ΔE00 4.71
Blueberry
#464196
ΔE00 5.37
Blurple
#5539CC
ΔE00 5.44
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373AB3 #B3B037
analogous
#3778B3 #373AB3 #7237B3
triadic
#373AB3 #B3373A #3AB337
tetradic
#373AB3 #B33778 #B3B037 #37B372
square
#373AB3 #B33778 #B3B037 #37B372
split-complementary
#373AB3 #B37237 #78B337
monochromatic
#1A1C55 #292B84 #373AB3 #5B5DCD #8A8BDB
Accessibility & contrast
On white
8.68
#373AB3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.42
#373AB3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373AB3
8.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373AB3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373AB3 | 1.00 | 8.68 | 2.42 | 8.68 |
| #FFFFFF | 8.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.42 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051B7
Deuteranopia (green-blind)
#0046B1
Tritanopia (blue-blind)
#005A71
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #373ab3; /* rgb */ color: rgb(55, 58, 179); /* oklch */ color: oklch(43.0% 0.187 274.2);
Tailwind
colors: {
custom: {
50: '#7f71cb',
500: '#373ab3',
950: '#000000',
},
}SCSS
$custom: #373ab3; $custom-light: #7f71cb; $custom-dark: #000000;
JSON
{
"hex": "#373ab3",
"rgb": {
"r": 55,
"g": 58,
"b": 179
},
"hsl": {
"h": 238.548,
"s": 52.991,
"l": 45.882
},
"oklch": {
"l": 0.42977,
"c": 0.1866,
"h": 274.2
},
"luminance": 0.07093
}Semantic roles & 50–950 ramp
primary
#373AB3
secondary
#C5C381
accent
#D94BDC
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0B0713
muted
#7C7A82