#373DB2#373DB2
#373DB2 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.182 H 273.7°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).
Color values
| HEX | #373DB2 |
|---|---|
| RGB | rgb(55, 61, 178) |
| HSL | hsl(237, 53%, 46%) |
| HSV | hsv(237, 69%, 70%) |
| CMYK | cmyk(69.1%, 65.7%, 0%, 30.2%) |
| CIE-LAB | lab(32.62, 36.13, -62.84) |
| CIE-LCH | lch(32.62, 72.48, 299.90°) |
| OKLab | oklab(43.39% 0.0116 -0.1814) |
| OKLCH | oklch(43.39% 0.182 273.7) |
| XYZ | xyz(11.2775, 7.3630, 42.9377) |
| Luminance | 0.0736 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.65
Blue Blue
#2242C7
ΔE00 3.44
Ocean Blue
#4F42B5
ΔE00 3.47
Blue With A Hint Of Purple
#533CC6
ΔE00 4.93
Blueberry
#464196
ΔE00 5.01
Blurple
#5539CC
ΔE00 5.76
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373DB2 #B2AC37
analogous
#377AB2 #373DB2 #6E37B2
triadic
#373DB2 #B2373D #3DB237
tetradic
#373DB2 #B2377A #B2AC37 #37B26E
square
#373DB2 #B2377A #B2AC37 #37B26E
split-complementary
#373DB2 #B26E37 #7AB237
monochromatic
#1A1D54 #292D83 #373DB2 #5A60CC #898DDB
Accessibility & contrast
On white
8.49
#373DB2 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.47
#373DB2 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373DB2
8.49:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373DB2 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373DB2 | 1.00 | 8.49 | 2.47 | 8.49 |
| #FFFFFF | 8.49 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.47 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.49 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0052B6
Deuteranopia (green-blind)
#0047B0
Tritanopia (blue-blind)
#005C72
Achromatopsia (no color)
#4D4D4D
Design tokens & code
CSS
--color: #373db2; /* rgb */ color: rgb(55, 61, 178); /* oklch */ color: oklch(43.4% 0.182 273.7);
Tailwind
colors: {
custom: {
50: '#7e73ca',
500: '#373db2',
950: '#000000',
},
}SCSS
$custom: #373db2; $custom-light: #7e73ca; $custom-dark: #000000;
JSON
{
"hex": "#373db2",
"rgb": {
"r": 55,
"g": 61,
"b": 178
},
"hsl": {
"h": 237.073,
"s": 52.79,
"l": 45.686
},
"oklch": {
"l": 0.43389,
"c": 0.18182,
"h": 273.7
},
"luminance": 0.07364
}Semantic roles & 50–950 ramp
primary
#373DB2
secondary
#C5C180
accent
#D54CDC
background
#F8F7FC
surface
#EFEDF9
border
#CAC8D2
text
#0B0813
muted
#7C7B82