#372FA9#372FA9
#372FA9 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.3% C 0.186 H 276.9°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).
Color values
| HEX | #372FA9 |
|---|---|
| RGB | rgb(55, 47, 169) |
| HSL | hsl(244, 56%, 42%) |
| HSV | hsv(244, 72%, 66%) |
| CMYK | cmyk(67.5%, 72.2%, 0%, 33.7%) |
| CIE-LAB | lab(28.67, 41.54, -63.94) |
| CIE-LCH | lch(28.67, 76.25, 303.01°) |
| OKLab | oklab(40.28% 0.0224 -0.1847) |
| OKLCH | oklch(40.28% 0.186 276.9) |
| XYZ | xyz(9.7512, 5.7090, 38.1165) |
| Luminance | 0.0571 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 3.77
Indigo Blue
#3A18B1
ΔE00 4.60
Ocean Blue
#4F42B5
ΔE00 5.80
Blueberry
#464196
ΔE00 6.27
Blue With A Hint Of Purple
#533CC6
ΔE00 6.29
True Blue
#010FCC
ΔE00 6.60
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#372FA9 #A1A92F
analogous
#2F64A9 #372FA9 #742FA9
triadic
#372FA9 #A9372F #2FA937
tetradic
#372FA9 #A92F64 #A1A92F #2FA974
square
#372FA9 #A92F64 #A1A92F #2FA974
split-complementary
#372FA9 #A9742F #64A92F
monochromatic
#181449 #272279 #372FA9 #5149CC #7F79DA
Accessibility & contrast
On white
9.80
#372FA9 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.14
#372FA9 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #372FA9
9.80:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##372FA9 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##372FA9 | 1.00 | 9.80 | 2.14 | 9.80 |
| #FFFFFF | 9.80 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.14 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.80 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0049AD
Deuteranopia (green-blind)
#003EA7
Tritanopia (blue-blind)
#005169
Achromatopsia (no color)
#444444
Design tokens & code
CSS
--color: #372fa9; /* rgb */ color: rgb(55, 47, 169); /* oklch */ color: oklch(40.3% 0.186 276.9);
Tailwind
colors: {
custom: {
50: '#7d69c4',
500: '#372fa9',
950: '#000000',
},
}SCSS
$custom: #372fa9; $custom-light: #7d69c4; $custom-dark: #000000;
JSON
{
"hex": "#372fa9",
"rgb": {
"r": 55,
"g": 47,
"b": 169
},
"hsl": {
"h": 243.934,
"s": 56.481,
"l": 42.353
},
"oklch": {
"l": 0.40281,
"c": 0.18605,
"h": 276.9
},
"luminance": 0.0571
}Semantic roles & 50–950 ramp
primary
#372FA9
secondary
#BDC272
accent
#E048D6
background
#F8F6FC
surface
#EFEBF8
border
#CAC6D1
text
#0B0613
muted
#7C7A82