#373CAC#373CAC
#373CAC is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.175 H 274.2°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).
Color values
| HEX | #373CAC |
|---|---|
| RGB | rgb(55, 60, 172) |
| HSL | hsl(237, 52%, 45%) |
| HSV | hsv(237, 68%, 67%) |
| CMYK | cmyk(68%, 65.1%, 0%, 32.5%) |
| CIE-LAB | lab(31.86, 34.66, -60.51) |
| CIE-LCH | lch(31.86, 69.74, 299.81°) |
| OKLab | oklab(42.67% 0.0128 -0.1746) |
| OKLCH | oklch(42.67% 0.175 274.2) |
| XYZ | xyz(10.6353, 7.0215, 39.8165) |
| Luminance | 0.0702 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.30
Ocean Blue
#4F42B5
ΔE00 3.82
Blue Blue
#2242C7
ΔE00 4.20
Blueberry
#464196
ΔE00 4.41
Blue With A Hint Of Purple
#533CC6
ΔE00 5.51
Darkslateblue
#483D8B
ΔE00 6.19
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373CAC #ACA737
analogous
#3777AC #373CAC #6D37AC
triadic
#373CAC #AC373C #3CAC37
tetradic
#373CAC #AC3777 #ACA737 #37AC6D
square
#373CAC #AC3777 #ACA737 #37AC6D
split-complementary
#373CAC #AC6D37 #77AC37
monochromatic
#191C4F #282C7E #373CAC #575CC9 #8589D8
Accessibility & contrast
On white
8.73
#373CAC on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.40
#373CAC on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373CAC
8.73:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373CAC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373CAC | 1.00 | 8.73 | 2.40 | 8.73 |
| #FFFFFF | 8.73 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.40 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.73 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0050B0
Deuteranopia (green-blind)
#0046AA
Tritanopia (blue-blind)
#00596E
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #373cac; /* rgb */ color: rgb(55, 60, 172); /* oklch */ color: oklch(42.7% 0.175 274.2);
Tailwind
colors: {
custom: {
50: '#7d72c6',
500: '#373cac',
950: '#000000',
},
}SCSS
$custom: #373cac; $custom-light: #7d72c6; $custom-dark: #000000;
JSON
{
"hex": "#373cac",
"rgb": {
"r": 55,
"g": 60,
"b": 172
},
"hsl": {
"h": 237.436,
"s": 51.542,
"l": 44.51
},
"oklch": {
"l": 0.42669,
"c": 0.1751,
"h": 274.2
},
"luminance": 0.07022
}Semantic roles & 50–950 ramp
primary
#373CAC
secondary
#C2BF7D
accent
#D54DDB
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0813
muted
#7C7B82