#3733C7#3733C7
#3733C7 is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.9% C 0.219 H 273.8°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).
Color values
| HEX | #3733C7 |
|---|---|
| RGB | rgb(55, 51, 199) |
| HSL | hsl(242, 59%, 49%) |
| HSV | hsv(242, 74%, 78%) |
| CMYK | cmyk(72.4%, 74.4%, 0%, 22%) |
| CIE-LAB | lab(32.48, 49.05, -75.44) |
| CIE-LCH | lch(32.48, 89.98, 303.03°) |
| OKLab | oklab(43.9% 0.0146 -0.2182) |
| OKLCH | oklch(43.9% 0.219 273.8) |
| XYZ | xyz(13.0647, 7.3021, 54.7427) |
| Luminance | 0.0730 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue With A Hint Of Purple
#533CC6
ΔE00 3.77
Blurple
#5539CC
ΔE00 3.86
Blue Blue
#2242C7
ΔE00 4.63
Ocean Blue
#4F42B5
ΔE00 4.93
Sapphire (survey)
#2138AB
ΔE00 5.04
Purple Blue
#5D21D0
ΔE00 5.48
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3733C7 #C3C733
analogous
#3379C7 #3733C7 #8133C7
triadic
#3733C7 #C73733 #33C737
tetradic
#3733C7 #C73379 #C3C733 #33C781
square
#3733C7 #C73379 #C3C733 #33C781
split-complementary
#3733C7 #C78133 #79C733
monochromatic
#1C1A66 #2A2796 #3733C7 #6461D6 #9491E3
Accessibility & contrast
On white
8.53
#3733C7 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.46
#3733C7 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3733C7
8.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3733C7 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3733C7 | 1.00 | 8.53 | 2.46 | 8.53 |
| #FFFFFF | 8.53 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.46 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.53 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0053CB
Deuteranopia (green-blind)
#0045C4
Tritanopia (blue-blind)
#005E7B
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #3733c7; /* rgb */ color: rgb(55, 51, 199); /* oklch */ color: oklch(43.9% 0.219 273.8);
Tailwind
colors: {
custom: {
50: '#846dd9',
500: '#3733c7',
950: '#000000',
},
}SCSS
$custom: #3733c7; $custom-light: #846dd9; $custom-dark: #000000;
JSON
{
"hex": "#3733c7",
"rgb": {
"r": 55,
"g": 51,
"b": 199
},
"hsl": {
"h": 241.622,
"s": 59.2,
"l": 49.02
},
"oklch": {
"l": 0.43899,
"c": 0.21872,
"h": 273.8
},
"luminance": 0.07303
}Semantic roles & 50–950 ramp
primary
#3733C7
secondary
#CCCE88
accent
#E245DE
background
#F8F6FD
surface
#F0ECFB
border
#CBC7D4
text
#0D0715
muted
#7D7A83