#373DA2#373DA2
#373DA2 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.160 H 274.5°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).
Color values
| HEX | #373DA2 |
|---|---|
| RGB | rgb(55, 61, 162) |
| HSL | hsl(237, 49%, 43%) |
| HSV | hsv(237, 66%, 64%) |
| CMYK | cmyk(66%, 62.3%, 0%, 36.5%) |
| CIE-LAB | lab(31.25, 30.51, -55.50) |
| CIE-LCH | lch(31.25, 63.33, 298.80°) |
| OKLab | oklab(41.96% 0.0127 -0.1599) |
| OKLCH | oklch(41.96% 0.16 274.5) |
| XYZ | xyz(9.7637, 6.7575, 34.9652) |
| Luminance | 0.0676 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.67
Blueberry
#464196
ΔE00 3.31
Ocean Blue
#4F42B5
ΔE00 4.61
Darkslateblue
#483D8B
ΔE00 5.07
Blue Blue
#2242C7
ΔE00 5.30
Cobalt
#0047AB
ΔE00 6.26
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373DA2 #A29C37
analogous
#3772A2 #373DA2 #6737A2
triadic
#373DA2 #A2373D #3DA237
tetradic
#373DA2 #A23772 #A29C37 #37A267
square
#373DA2 #A23772 #A29C37 #37A267
split-complementary
#373DA2 #A26737 #72A237
monochromatic
#181B47 #272C74 #373DA2 #5258C4 #8084D4
Accessibility & contrast
On white
8.93
#373DA2 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.35
#373DA2 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373DA2
8.93:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373DA2 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373DA2 | 1.00 | 8.93 | 2.35 | 8.93 |
| #FFFFFF | 8.93 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.35 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.93 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EA5
Deuteranopia (green-blind)
#0045A0
Tritanopia (blue-blind)
#005669
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #373da2; /* rgb */ color: rgb(55, 61, 162); /* oklch */ color: oklch(42.0% 0.160 274.5);
Tailwind
colors: {
custom: {
50: '#7b72be',
500: '#373da2',
950: '#000000',
},
}SCSS
$custom: #373da2; $custom-light: #7b72be; $custom-dark: #000000;
JSON
{
"hex": "#373da2",
"rgb": {
"r": 55,
"g": 61,
"b": 162
},
"hsl": {
"h": 236.636,
"s": 49.309,
"l": 42.549
},
"oklch": {
"l": 0.4196,
"c": 0.16042,
"h": 274.5
},
"luminance": 0.06758
}Semantic roles & 50–950 ramp
primary
#373DA2
secondary
#BDB978
accent
#D14FD9
background
#F8F6FB
surface
#EFECF7
border
#CAC7D0
text
#0A0812
muted
#7C7B81