#373BB0#373BB0
#373BB0 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.182 H 274.2°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).
Color values
| HEX | #373BB0 |
|---|---|
| RGB | rgb(55, 59, 176) |
| HSL | hsl(238, 52%, 45%) |
| HSV | hsv(238, 69%, 69%) |
| CMYK | cmyk(68.8%, 66.5%, 0%, 31%) |
| CIE-LAB | lab(31.97, 36.68, -62.70) |
| CIE-LCH | lch(31.97, 72.64, 300.33°) |
| OKLab | oklab(42.86% 0.0132 -0.1811) |
| OKLCH | oklch(42.86% 0.182 274.2) |
| XYZ | xyz(10.9734, 7.0737, 41.8529) |
| Luminance | 0.0707 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.42
Ocean Blue
#4F42B5
ΔE00 3.68
Blue Blue
#2242C7
ΔE00 3.94
Blueberry
#464196
ΔE00 4.94
Blue With A Hint Of Purple
#533CC6
ΔE00 5.03
Blurple
#5539CC
ΔE00 5.82
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373BB0 #B0AC37
analogous
#3777B0 #373BB0 #7037B0
triadic
#373BB0 #B0373B #3BB037
tetradic
#373BB0 #B03777 #B0AC37 #37B070
square
#373BB0 #B03777 #B0AC37 #37B070
split-complementary
#373BB0 #B07037 #77B037
monochromatic
#1A1C53 #282B81 #373BB0 #595DCB #888ADA
Accessibility & contrast
On white
8.70
#373BB0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.41
#373BB0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373BB0
8.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373BB0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373BB0 | 1.00 | 8.70 | 2.41 | 8.70 |
| #FFFFFF | 8.70 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.41 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.70 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051B4
Deuteranopia (green-blind)
#0046AE
Tritanopia (blue-blind)
#005A70
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #373bb0; /* rgb */ color: rgb(55, 59, 176); /* oklch */ color: oklch(42.9% 0.182 274.2);
Tailwind
colors: {
custom: {
50: '#7e71c9',
500: '#373bb0',
950: '#000000',
},
}SCSS
$custom: #373bb0; $custom-light: #7e71c9; $custom-dark: #000000;
JSON
{
"hex": "#373bb0",
"rgb": {
"r": 55,
"g": 59,
"b": 176
},
"hsl": {
"h": 238.017,
"s": 52.381,
"l": 45.294
},
"oklch": {
"l": 0.42864,
"c": 0.18155,
"h": 274.2
},
"luminance": 0.07075
}Semantic roles & 50–950 ramp
primary
#373BB0
secondary
#C4C17F
accent
#D74CDC
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0813
muted
#7C7B82