#3437B8#3437B8
#3437B8 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.8% C 0.197 H 273.3°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).
Color values
| HEX | #3437B8 |
|---|---|
| RGB | rgb(52, 55, 184) |
| HSL | hsl(239, 56%, 46%) |
| HSV | hsv(239, 72%, 72%) |
| CMYK | cmyk(71.7%, 70.1%, 0%, 27.8%) |
| CIE-LAB | lab(31.63, 41.51, -68.03) |
| CIE-LCH | lch(31.63, 79.69, 301.39°) |
| OKLab | oklab(42.79% 0.0114 -0.1967) |
| OKLCH | oklch(42.79% 0.197 273.3) |
| XYZ | xyz(11.4312, 6.9220, 46.0718) |
| Luminance | 0.0692 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.94
Blue Blue
#2242C7
ΔE00 3.98
Ocean Blue
#4F42B5
ΔE00 4.22
Blue With A Hint Of Purple
#533CC6
ΔE00 4.58
Blurple
#5539CC
ΔE00 5.14
Blue (survey)
#0343DF
ΔE00 6.07
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3437B8 #B8B534
analogous
#3479B8 #3437B8 #7334B8
triadic
#3437B8 #B83437 #37B834
tetradic
#3437B8 #B83479 #B8B534 #34B873
square
#3437B8 #B83479 #B8B534 #34B873
split-complementary
#3437B8 #B87334 #79B834
monochromatic
#191A59 #272988 #3437B8 #595CD0 #898BDE
Accessibility & contrast
On white
8.81
#3437B8 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.38
#3437B8 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3437B8
8.81:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3437B8 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3437B8 | 1.00 | 8.81 | 2.38 | 8.81 |
| #FFFFFF | 8.81 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.38 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.81 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051BC
Deuteranopia (green-blind)
#0044B6
Tritanopia (blue-blind)
#005B73
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #3437b8; /* rgb */ color: rgb(52, 55, 184); /* oklch */ color: oklch(42.8% 0.197 273.3);
Tailwind
colors: {
custom: {
50: '#7f6fce',
500: '#3437b8',
950: '#000000',
},
}SCSS
$custom: #3437b8; $custom-light: #7f6fce; $custom-dark: #000000;
JSON
{
"hex": "#3437b8",
"rgb": {
"r": 52,
"g": 55,
"b": 184
},
"hsl": {
"h": 238.636,
"s": 55.932,
"l": 46.275
},
"oklch": {
"l": 0.42791,
"c": 0.19705,
"h": 273.3
},
"luminance": 0.06923
}Semantic roles & 50–950 ramp
primary
#3437B8
secondary
#C8C680
accent
#DC49DF
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0C0714
muted
#7D7A82