#3131A4#3131A4
#3131A4 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.7% C 0.179 H 274.6°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).
Color values
| HEX | #3131A4 |
|---|---|
| RGB | rgb(49, 49, 164) |
| HSL | hsl(240, 54%, 42%) |
| HSV | hsv(240, 70%, 64%) |
| CMYK | cmyk(70.1%, 70.1%, 0%, 35.7%) |
| CIE-LAB | lab(28.19, 37.95, -61.72) |
| CIE-LCH | lch(28.19, 72.46, 301.58°) |
| OKLab | oklab(39.68% 0.0143 -0.1784) |
| OKLCH | oklch(39.68% 0.179 274.6) |
| XYZ | xyz(9.0636, 5.5291, 35.7043) |
| Luminance | 0.0553 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.89
Indigo Blue
#3A18B1
ΔE00 5.61
Blueberry
#464196
ΔE00 5.74
Ocean Blue
#4F42B5
ΔE00 6.09
Darkslateblue
#483D8B
ΔE00 6.50
Blue Blue
#2242C7
ΔE00 6.65
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3131A4 #A4A431
analogous
#316BA4 #3131A4 #6B31A4
triadic
#3131A4 #A43131 #31A431
tetradic
#3131A4 #A4316B #A4A431 #31A46B
square
#3131A4 #A4316B #A4A431 #31A46B
split-complementary
#3131A4 #A46B31 #6BA431
monochromatic
#151546 #232375 #3131A4 #4949C9 #7979D7
Accessibility & contrast
On white
9.97
#3131A4 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.11
#3131A4 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3131A4
9.97:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3131A4 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3131A4 | 1.00 | 9.97 | 2.11 | 9.97 |
| #FFFFFF | 9.97 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.11 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.97 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0048A7
Deuteranopia (green-blind)
#003DA2
Tritanopia (blue-blind)
#005066
Achromatopsia (no color)
#424242
Design tokens & code
CSS
--color: #3131a4; /* rgb */ color: rgb(49, 49, 164); /* oklch */ color: oklch(39.7% 0.179 274.6);
Tailwind
colors: {
custom: {
50: '#7a6ac0',
500: '#3131a4',
950: '#000000',
},
}SCSS
$custom: #3131a4; $custom-light: #7a6ac0; $custom-dark: #000000;
JSON
{
"hex": "#3131a4",
"rgb": {
"r": 49,
"g": 49,
"b": 164
},
"hsl": {
"h": 240,
"s": 53.991,
"l": 41.765
},
"oklch": {
"l": 0.39685,
"c": 0.17894,
"h": 274.6
},
"luminance": 0.0553
}Semantic roles & 50–950 ramp
primary
#3131A4
secondary
#BFBF72
accent
#DD4ADD
background
#F8F6FC
surface
#EFEBF8
border
#CAC6D1
text
#0A0612
muted
#7C7A81