#3537B3#3537B3
#3537B3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.4% C 0.190 H 274.0°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).
Color values
| HEX | #3537B3 |
|---|---|
| RGB | rgb(53, 55, 179) |
| HSL | hsl(239, 54%, 45%) |
| HSV | hsv(239, 70%, 70%) |
| CMYK | cmyk(70.4%, 69.3%, 0%, 29.8%) |
| CIE-LAB | lab(31.21, 39.92, -65.74) |
| CIE-LCH | lch(31.21, 76.91, 301.27°) |
| OKLab | oklab(42.37% 0.0132 -0.19) |
| OKLCH | oklch(42.37% 0.19 274) |
| XYZ | xyz(10.9684, 6.7429, 43.3626) |
| Luminance | 0.0674 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.59
Ocean Blue
#4F42B5
ΔE00 4.22
Blue Blue
#2242C7
ΔE00 4.34
Blue With A Hint Of Purple
#533CC6
ΔE00 4.92
Blurple
#5539CC
ΔE00 5.55
Blueberry
#464196
ΔE00 5.79
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3537B3 #B3B135
analogous
#3576B3 #3537B3 #7235B3
triadic
#3537B3 #B33537 #37B335
tetradic
#3537B3 #B33576 #B3B135 #35B372
square
#3537B3 #B33576 #B3B135 #35B372
split-complementary
#3537B3 #B37235 #76B335
monochromatic
#191A55 #272884 #3537B3 #585ACD #8788DB
Accessibility & contrast
On white
8.94
#3537B3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.35
#3537B3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3537B3
8.94:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3537B3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3537B3 | 1.00 | 8.94 | 2.35 | 8.94 |
| #FFFFFF | 8.94 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.35 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.94 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004FB7
Deuteranopia (green-blind)
#0044B1
Tritanopia (blue-blind)
#005970
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #3537b3; /* rgb */ color: rgb(53, 55, 179); /* oklch */ color: oklch(42.4% 0.190 274.0);
Tailwind
colors: {
custom: {
50: '#7e6fcb',
500: '#3537b3',
950: '#000000',
},
}SCSS
$custom: #3537b3; $custom-light: #7e6fcb; $custom-dark: #000000;
JSON
{
"hex": "#3537b3",
"rgb": {
"r": 53,
"g": 55,
"b": 179
},
"hsl": {
"h": 239.048,
"s": 54.31,
"l": 45.49
},
"oklch": {
"l": 0.42365,
"c": 0.19047,
"h": 274
},
"luminance": 0.06744
}Semantic roles & 50–950 ramp
primary
#3537B3
secondary
#C5C47F
accent
#DB4ADE
background
#F8F6FC
surface
#EFECF9
border
#CAC7D2
text
#0B0713
muted
#7C7A82