#3750B4#3750B4
#3750B4 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.1% C 0.161 H 268.8°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).
Color values
| HEX | #3750B4 |
|---|---|
| RGB | rgb(55, 80, 180) |
| HSL | hsl(228, 53%, 46%) |
| HSV | hsv(228, 69%, 71%) |
| CMYK | cmyk(69.4%, 55.6%, 0%, 29.4%) |
| CIE-LAB | lab(37.56, 24.62, -55.97) |
| CIE-LCH | lch(37.56, 61.14, 293.74°) |
| OKLab | oklab(47.1% -0.0033 -0.1611) |
| OKLCH | oklch(47.1% 0.161 268.8) |
| XYZ | xyz(12.6796, 9.8436, 44.4029) |
| Luminance | 0.0984 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire
#0F52BA
ΔE00 3.59
Cobalt
#0047AB
ΔE00 4.61
Blue Blue
#2242C7
ΔE00 5.02
Denim Blue
#3B5B92
ΔE00 6.33
Warm Blue
#4B57DB
ΔE00 6.50
Cobalt (survey)
#1E488F
ΔE00 6.50
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3750B4 #B49B37
analogous
#378EB4 #3750B4 #5C37B4
triadic
#3750B4 #B43750 #50B437
tetradic
#3750B4 #B4378E #B49B37 #37B45C
square
#3750B4 #B4378E #B49B37 #37B45C
split-complementary
#3750B4 #B45C37 #8EB437
monochromatic
#1A2656 #293B85 #3750B4 #5B72CD #8A9ADB
Accessibility & contrast
On white
7.07
#3750B4 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.97
#3750B4 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3750B4
7.07:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3750B4 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3750B4 | 1.00 | 7.07 | 2.97 | 7.07 |
| #FFFFFF | 7.07 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.97 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.07 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#005EB7
Deuteranopia (green-blind)
#0053B2
Tritanopia (blue-blind)
#00687A
Achromatopsia (no color)
#585858
Design tokens & code
CSS
--color: #3750b4; /* rgb */ color: rgb(55, 80, 180); /* oklch */ color: oklch(47.1% 0.161 268.8);
Tailwind
colors: {
custom: {
50: '#7d80cb',
500: '#3750b4',
950: '#000000',
},
}SCSS
$custom: #3750b4; $custom-light: #7d80cb; $custom-dark: #000000;
JSON
{
"hex": "#3750b4",
"rgb": {
"r": 55,
"g": 80,
"b": 180
},
"hsl": {
"h": 228,
"s": 53.191,
"l": 46.078
},
"oklch": {
"l": 0.47098,
"c": 0.16112,
"h": 268.8
},
"luminance": 0.09845
}Semantic roles & 50–950 ramp
primary
#3750B4
secondary
#C6B881
accent
#C04BDD
background
#F8F7FC
surface
#EFEEF9
border
#CAC9D2
text
#0B0A13
muted
#7C7C82