#3737AF#3737AF
#3737AF is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.1% C 0.185 H 275.0°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).
Color values
| HEX | #3737AF |
|---|---|
| RGB | rgb(55, 55, 175) |
| HSL | hsl(240, 52%, 45%) |
| HSV | hsv(240, 69%, 69%) |
| CMYK | cmyk(68.6%, 68.6%, 0%, 31.4%) |
| CIE-LAB | lab(30.97, 38.80, -63.75) |
| CIE-LCH | lch(30.97, 74.63, 301.32°) |
| OKLab | oklab(42.11% 0.0161 -0.1841) |
| OKLCH | oklch(42.11% 0.185 275) |
| XYZ | xyz(10.6770, 6.6388, 41.2679) |
| Luminance | 0.0664 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.55
Ocean Blue
#4F42B5
ΔE00 4.18
Blue Blue
#2242C7
ΔE00 4.74
Blue With A Hint Of Purple
#533CC6
ΔE00 5.13
Blueberry
#464196
ΔE00 5.33
Blurple
#5539CC
ΔE00 5.80
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3737AF #AFAF37
analogous
#3773AF #3737AF #7337AF
triadic
#3737AF #AF3737 #37AF37
tetradic
#3737AF #AF3773 #AFAF37 #37AF73
square
#3737AF #AF3773 #AFAF37 #37AF73
split-complementary
#3737AF #AF7337 #73AF37
monochromatic
#1A1A52 #282880 #3737AF #5959CB #8787D9
Accessibility & contrast
On white
9.02
#3737AF on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.33
#3737AF on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3737AF
9.02:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3737AF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3737AF | 1.00 | 9.02 | 2.33 | 9.02 |
| #FFFFFF | 9.02 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.33 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.02 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EB3
Deuteranopia (green-blind)
#0043AD
Tritanopia (blue-blind)
#00576E
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #3737af; /* rgb */ color: rgb(55, 55, 175); /* oklch */ color: oklch(42.1% 0.185 275.0);
Tailwind
colors: {
custom: {
50: '#7e6ec8',
500: '#3737af',
950: '#000000',
},
}SCSS
$custom: #3737af; $custom-light: #7e6ec8; $custom-dark: #000000;
JSON
{
"hex": "#3737af",
"rgb": {
"r": 55,
"g": 55,
"b": 175
},
"hsl": {
"h": 240,
"s": 52.174,
"l": 45.098
},
"oklch": {
"l": 0.42108,
"c": 0.18486,
"h": 275
},
"luminance": 0.0664
}Semantic roles & 50–950 ramp
primary
#3737AF
secondary
#C3C37F
accent
#DC4CDC
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82