#3733B5#3733B5
#3733B5 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 42.1% C 0.197 H 275.2°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).
Color values
| HEX | #3733B5 |
|---|---|
| RGB | rgb(55, 51, 181) |
| HSL | hsl(242, 56%, 45%) |
| HSV | hsv(242, 72%, 71%) |
| CMYK | cmyk(69.6%, 71.8%, 0%, 29%) |
| CIE-LAB | lab(30.68, 43.19, -67.81) |
| CIE-LCH | lch(30.68, 80.40, 302.49°) |
| OKLab | oklab(42.07% 0.0178 -0.196) |
| OKLCH | oklch(42.07% 0.197 275.2) |
| XYZ | xyz(11.0971, 6.5150, 44.3798) |
| Luminance | 0.0652 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 3.44
Ocean Blue
#4F42B5
ΔE00 4.69
Blue With A Hint Of Purple
#533CC6
ΔE00 4.82
Blue Blue
#2242C7
ΔE00 5.16
Blurple
#5539CC
ΔE00 5.27
Indigo Blue
#3A18B1
ΔE00 5.44
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3733B5 #B1B533
analogous
#3370B5 #3733B5 #7833B5
triadic
#3733B5 #B53733 #33B537
tetradic
#3733B5 #B53370 #B1B533 #33B578
square
#3733B5 #B53370 #B1B533 #33B578
split-complementary
#3733B5 #B57833 #70B533
monochromatic
#1A1856 #282685 #3733B5 #5A56CF #8886DD
Accessibility & contrast
On white
9.12
#3733B5 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.30
#3733B5 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3733B5
9.12:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3733B5 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3733B5 | 1.00 | 9.12 | 2.30 | 9.12 |
| #FFFFFF | 9.12 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.30 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.12 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EB9
Deuteranopia (green-blind)
#0042B3
Tritanopia (blue-blind)
#005770
Achromatopsia (no color)
#484848
Design tokens & code
CSS
--color: #3733b5; /* rgb */ color: rgb(55, 51, 181); /* oklch */ color: oklch(42.1% 0.197 275.2);
Tailwind
colors: {
custom: {
50: '#806ccc',
500: '#3733b5',
950: '#000000',
},
}SCSS
$custom: #3733b5; $custom-light: #806ccc; $custom-dark: #000000;
JSON
{
"hex": "#3733b5",
"rgb": {
"r": 55,
"g": 51,
"b": 181
},
"hsl": {
"h": 241.846,
"s": 56.034,
"l": 45.49
},
"oklch": {
"l": 0.42071,
"c": 0.19681,
"h": 275.2
},
"luminance": 0.06516
}Semantic roles & 50–950 ramp
primary
#3733B5
secondary
#C4C67D
accent
#DF48DB
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0714
muted
#7D7A82