#3437BC#3437BC
#3437BC is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.2% C 0.202 H 273.1°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).
Color values
| HEX | #3437BC |
|---|---|
| RGB | rgb(52, 55, 188) |
| HSL | hsl(239, 57%, 47%) |
| HSV | hsv(239, 72%, 74%) |
| CMYK | cmyk(72.3%, 70.7%, 0%, 26.3%) |
| CIE-LAB | lab(32.02, 42.86, -69.76) |
| CIE-LCH | lch(32.02, 81.87, 301.57°) |
| OKLab | oklab(43.19% 0.0108 -0.2018) |
| OKLCH | oklch(43.19% 0.202 273.1) |
| XYZ | xyz(11.8564, 7.0921, 48.3113) |
| Luminance | 0.0709 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 3.36
Blue Blue
#2242C7
ΔE00 3.79
Ocean Blue
#4F42B5
ΔE00 4.23
Blue With A Hint Of Purple
#533CC6
ΔE00 4.28
Blurple
#5539CC
ΔE00 4.78
Blue (survey)
#0343DF
ΔE00 5.69
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3437BC #BCB934
analogous
#347BBC #3437BC #7534BC
triadic
#3437BC #BC3437 #37BC34
tetradic
#3437BC #BC347B #BCB934 #34BC75
square
#3437BC #BC347B #BCB934 #34BC75
split-complementary
#3437BC #BC7534 #7BBC34
monochromatic
#191B5C #27298C #3437BC #5B5ED2 #8B8DDF
Accessibility & contrast
On white
8.68
#3437BC on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.42
#3437BC on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3437BC
8.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3437BC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3437BC | 1.00 | 8.68 | 2.42 | 8.68 |
| #FFFFFF | 8.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.42 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0052C0
Deuteranopia (green-blind)
#0045BA
Tritanopia (blue-blind)
#005C75
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #3437bc; /* rgb */ color: rgb(52, 55, 188); /* oklch */ color: oklch(43.2% 0.202 273.1);
Tailwind
colors: {
custom: {
50: '#806fd1',
500: '#3437bc',
950: '#000000',
},
}SCSS
$custom: #3437bc; $custom-light: #806fd1; $custom-dark: #000000;
JSON
{
"hex": "#3437bc",
"rgb": {
"r": 52,
"g": 55,
"b": 188
},
"hsl": {
"h": 238.676,
"s": 56.667,
"l": 47.059
},
"oklch": {
"l": 0.43186,
"c": 0.20205,
"h": 273.1
},
"luminance": 0.07093
}Semantic roles & 50–950 ramp
primary
#3437BC
secondary
#C9C883
accent
#DD48E0
background
#F8F6FD
surface
#F0ECFA
border
#CBC7D3
text
#0C0714
muted
#7D7A83