#372FBB#372FBB
#372FBB is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 42.1% C 0.208 H 275.2°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).
Color values
| HEX | #372FBB |
|---|---|
| RGB | rgb(55, 47, 187) |
| HSL | hsl(243, 60%, 46%) |
| HSV | hsv(243, 75%, 73%) |
| CMYK | cmyk(70.6%, 74.9%, 0%, 26.7%) |
| CIE-LAB | lab(30.48, 47.39, -71.70) |
| CIE-LCH | lch(30.48, 85.94, 303.46°) |
| OKLab | oklab(42.11% 0.0189 -0.2073) |
| OKLCH | oklch(42.11% 0.208 275.2) |
| XYZ | xyz(11.5587, 6.4320, 47.6364) |
| Luminance | 0.0643 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 4.46
Indigo Blue
#3A18B1
ΔE00 4.63
Blue With A Hint Of Purple
#533CC6
ΔE00 4.82
Blurple
#5539CC
ΔE00 5.02
Ocean Blue
#4F42B5
ΔE00 5.39
True Blue
#010FCC
ΔE00 5.56
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#372FBB #B3BB2F
analogous
#2F6DBB #372FBB #7D2FBB
triadic
#372FBB #BB372F #2FBB37
tetradic
#372FBB #BB2F6D #B3BB2F #2FBB7D
square
#372FBB #BB2F6D #B3BB2F #2FBB7D
split-complementary
#372FBB #BB7D2F #6DBB2F
monochromatic
#1A1659 #29238A #372FBB #5B53D4 #8A84E0
Accessibility & contrast
On white
9.18
#372FBB on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.29
#372FBB on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #372FBB
9.18:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##372FBB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##372FBB | 1.00 | 9.18 | 2.29 | 9.18 |
| #FFFFFF | 9.18 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.29 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.18 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EBF
Deuteranopia (green-blind)
#0041B9
Tritanopia (blue-blind)
#005873
Achromatopsia (no color)
#484848
Design tokens & code
CSS
--color: #372fbb; /* rgb */ color: rgb(55, 47, 187); /* oklch */ color: oklch(42.1% 0.208 275.2);
Tailwind
colors: {
custom: {
50: '#816ad1',
500: '#372fbb',
950: '#000000',
},
}SCSS
$custom: #372fbb; $custom-light: #816ad1; $custom-dark: #000000;
JSON
{
"hex": "#372fbb",
"rgb": {
"r": 55,
"g": 47,
"b": 187
},
"hsl": {
"h": 243.429,
"s": 59.829,
"l": 45.882
},
"oklch": {
"l": 0.4211,
"c": 0.20816,
"h": 275.2
},
"luminance": 0.06433
}Semantic roles & 50–950 ramp
primary
#372FBB
secondary
#C5C97C
accent
#E345DA
background
#F8F6FD
surface
#F0EBFA
border
#CBC6D3
text
#0C0614
muted
#7D7A83