#373FA7#373FA7
#373FA7 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.165 H 273.7°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).
Color values
| HEX | #373FA7 |
|---|---|
| RGB | rgb(55, 63, 167) |
| HSL | hsl(236, 50%, 44%) |
| HSV | hsv(236, 67%, 65%) |
| CMYK | cmyk(67.1%, 62.3%, 0%, 34.5%) |
| CIE-LAB | lab(32.16, 30.99, -57.02) |
| CIE-LCH | lch(32.16, 64.90, 298.53°) |
| OKLab | oklab(42.76% 0.0108 -0.1644) |
| OKLCH | oklch(42.76% 0.165 273.7) |
| XYZ | xyz(10.3258, 7.1563, 37.3889) |
| Luminance | 0.0716 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.70
Blueberry
#464196
ΔE00 3.69
Ocean Blue
#4F42B5
ΔE00 4.16
Blue Blue
#2242C7
ΔE00 4.50
Darkslateblue
#483D8B
ΔE00 5.68
Cobalt
#0047AB
ΔE00 5.80
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373FA7 #A79F37
analogous
#3777A7 #373FA7 #6737A7
triadic
#373FA7 #A7373F #3FA737
tetradic
#373FA7 #A73777 #A79F37 #37A767
square
#373FA7 #A73777 #A79F37 #37A767
split-complementary
#373FA7 #A76737 #77A737
monochromatic
#191C4B #282E79 #373FA7 #545DC7 #8288D6
Accessibility & contrast
On white
8.64
#373FA7 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.43
#373FA7 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373FA7
8.64:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373FA7 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373FA7 | 1.00 | 8.64 | 2.43 | 8.64 |
| #FFFFFF | 8.64 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.43 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.64 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051AA
Deuteranopia (green-blind)
#0047A5
Tritanopia (blue-blind)
#00596D
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #373fa7; /* rgb */ color: rgb(55, 63, 167); /* oklch */ color: oklch(42.8% 0.165 273.7);
Tailwind
colors: {
custom: {
50: '#7c74c2',
500: '#373fa7',
950: '#000000',
},
}SCSS
$custom: #373fa7; $custom-light: #7c74c2; $custom-dark: #000000;
JSON
{
"hex": "#373fa7",
"rgb": {
"r": 55,
"g": 63,
"b": 167
},
"hsl": {
"h": 235.714,
"s": 50.45,
"l": 43.529
},
"oklch": {
"l": 0.4276,
"c": 0.16472,
"h": 273.7
},
"luminance": 0.07157
}Semantic roles & 50–950 ramp
primary
#373FA7
secondary
#C0BB7A
accent
#D04EDA
background
#F8F7FC
surface
#EFEDF8
border
#CAC8D1
text
#0B0812
muted
#7C7B81