#373AA9#373AA9
#373AA9 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.174 H 274.8°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).
Color values
| HEX | #373AA9 |
|---|---|
| RGB | rgb(55, 58, 169) |
| HSL | hsl(238, 51%, 44%) |
| HSV | hsv(238, 67%, 66%) |
| CMYK | cmyk(67.5%, 65.7%, 0%, 33.7%) |
| CIE-LAB | lab(31.12, 34.88, -59.92) |
| CIE-LCH | lch(31.12, 69.33, 300.20°) |
| OKLab | oklab(42.05% 0.0146 -0.1729) |
| OKLCH | oklch(42.05% 0.174 274.8) |
| XYZ | xyz(10.2477, 6.7020, 38.2820) |
| Luminance | 0.0670 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.22
Ocean Blue
#4F42B5
ΔE00 4.15
Blueberry
#464196
ΔE00 4.31
Blue Blue
#2242C7
ΔE00 4.80
Blue With A Hint Of Purple
#533CC6
ΔE00 5.77
Darkslateblue
#483D8B
ΔE00 5.89
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#373AA9 #A9A637
analogous
#3773A9 #373AA9 #6D37A9
triadic
#373AA9 #A9373A #3AA937
tetradic
#373AA9 #A93773 #A9A637 #37A96D
square
#373AA9 #A93773 #A9A637 #37A96D
split-complementary
#373AA9 #A96D37 #73A937
monochromatic
#191A4D #282A7B #373AA9 #5558C8 #8486D7
Accessibility & contrast
On white
8.97
#373AA9 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.34
#373AA9 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #373AA9
8.97:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##373AA9 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##373AA9 | 1.00 | 8.97 | 2.34 | 8.97 |
| #FFFFFF | 8.97 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.34 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.97 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EAC
Deuteranopia (green-blind)
#0044A7
Tritanopia (blue-blind)
#00576C
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #373aa9; /* rgb */ color: rgb(55, 58, 169); /* oklch */ color: oklch(42.0% 0.174 274.8);
Tailwind
colors: {
custom: {
50: '#7d70c4',
500: '#373aa9',
950: '#000000',
},
}SCSS
$custom: #373aa9; $custom-light: #7d70c4; $custom-dark: #000000;
JSON
{
"hex": "#373aa9",
"rgb": {
"r": 55,
"g": 58,
"b": 169
},
"hsl": {
"h": 238.421,
"s": 50.893,
"l": 43.922
},
"oklch": {
"l": 0.4205,
"c": 0.17353,
"h": 274.8
},
"luminance": 0.06703
}Semantic roles & 50–950 ramp
primary
#373AA9
secondary
#C0BF7B
accent
#D74DDA
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82