#3739AD#3739AD
#3739AD is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.180 H 274.8°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).
Color values
| HEX | #3739AD |
|---|---|
| RGB | rgb(55, 57, 173) |
| HSL | hsl(239, 52%, 45%) |
| HSV | hsv(239, 68%, 68%) |
| CMYK | cmyk(68.2%, 67.1%, 0%, 32.2%) |
| CIE-LAB | lab(31.24, 36.89, -62.11) |
| CIE-LCH | lch(31.24, 72.24, 300.70°) |
| OKLab | oklab(42.25% 0.015 -0.1793) |
| OKLCH | oklch(42.25% 0.18 274.8) |
| XYZ | xyz(10.5790, 6.7546, 40.2733) |
| Luminance | 0.0676 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.31
Ocean Blue
#4F42B5
ΔE00 4.01
Blue Blue
#2242C7
ΔE00 4.56
Blueberry
#464196
ΔE00 4.85
Blue With A Hint Of Purple
#533CC6
ΔE00 5.31
Blurple
#5539CC
ΔE00 6.06
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3739AD #ADAB37
analogous
#3774AD #3739AD #7037AD
triadic
#3739AD #AD3739 #39AD37
tetradic
#3739AD #AD3774 #ADAB37 #37AD70
square
#3739AD #AD3774 #ADAB37 #37AD70
split-complementary
#3739AD #AD7037 #74AD37
monochromatic
#191A50 #282A7F #3739AD #5759CA #8687D8
Accessibility & contrast
On white
8.93
#3739AD on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.35
#3739AD on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3739AD
8.93:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3739AD | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3739AD | 1.00 | 8.93 | 2.35 | 8.93 |
| #FFFFFF | 8.93 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.35 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.93 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004FB1
Deuteranopia (green-blind)
#0044AB
Tritanopia (blue-blind)
#00586E
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #3739ad; /* rgb */ color: rgb(55, 57, 173); /* oklch */ color: oklch(42.2% 0.180 274.8);
Tailwind
colors: {
custom: {
50: '#7d70c6',
500: '#3739ad',
950: '#000000',
},
}SCSS
$custom: #3739ad; $custom-light: #7d70c6; $custom-dark: #000000;
JSON
{
"hex": "#3739ad",
"rgb": {
"r": 55,
"g": 57,
"b": 173
},
"hsl": {
"h": 238.983,
"s": 51.754,
"l": 44.706
},
"oklch": {
"l": 0.42249,
"c": 0.17997,
"h": 274.8
},
"luminance": 0.06756
}Semantic roles & 50–950 ramp
primary
#3739AD
secondary
#C2C17D
accent
#D94DDB
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82