#373CA3#373CA3
#373CA3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.163 H 274.7°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).
Color values
| HEX | #373CA3 |
|---|---|
| RGB | rgb(55, 60, 163) |
| HSL | hsl(237, 50%, 43%) |
| HSV | hsv(237, 66%, 64%) |
| CMYK | cmyk(66.3%, 63.2%, 0%, 36.1%) |
| CIE-LAB | lab(31.08, 31.51, -56.37) |
| CIE-LCH | lch(31.08, 64.58, 299.21°) |
| OKLab | oklab(41.87% 0.0134 -0.1625) |
| OKLCH | oklch(41.87% 0.163 274.7) |
| XYZ | xyz(9.8001, 6.6874, 35.4176) |
| Luminance | 0.0669 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.50
Blueberry
#464196
ΔE00 3.48
Ocean Blue
#4F42B5
ΔE00 4.53
Darkslateblue
#483D8B
ΔE00 5.17
Blue Blue
#2242C7
ΔE00 5.26
Cobalt
#0047AB
ΔE00 6.49
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373CA3 #A39E37
analogous
#3772A3 #373CA3 #6837A3
triadic
#373CA3 #A3373C #3CA337
tetradic
#373CA3 #A33772 #A39E37 #37A368
square
#373CA3 #A33772 #A39E37 #37A368
split-complementary
#373CA3 #A36837 #72A337
monochromatic
#181A47 #282B75 #373CA3 #5258C5 #8084D4
Accessibility & contrast
On white
8.98
#373CA3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.34
#373CA3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373CA3
8.98:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373CA3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373CA3 | 1.00 | 8.98 | 2.34 | 8.98 |
| #FFFFFF | 8.98 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.34 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.98 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EA6
Deuteranopia (green-blind)
#0044A1
Tritanopia (blue-blind)
#00566A
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #373ca3; /* rgb */ color: rgb(55, 60, 163); /* oklch */ color: oklch(41.9% 0.163 274.7);
Tailwind
colors: {
custom: {
50: '#7b72bf',
500: '#373ca3',
950: '#000000',
},
}SCSS
$custom: #373ca3; $custom-light: #7b72bf; $custom-dark: #000000;
JSON
{
"hex": "#373ca3",
"rgb": {
"r": 55,
"g": 60,
"b": 163
},
"hsl": {
"h": 237.222,
"s": 49.541,
"l": 42.745
},
"oklch": {
"l": 0.41865,
"c": 0.16303,
"h": 274.7
},
"luminance": 0.06688
}Semantic roles & 50–950 ramp
primary
#373CA3
secondary
#BEBA78
accent
#D34FD9
background
#F8F6FB
surface
#EFECF7
border
#CAC7D0
text
#0A0812
muted
#7C7B81