#313DB0#313DB0
#313DB0 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.181 H 271.6°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).
Color values
| HEX | #313DB0 |
|---|---|
| RGB | rgb(49, 61, 176) |
| HSL | hsl(234, 56%, 44%) |
| HSV | hsv(234, 72%, 69%) |
| CMYK | cmyk(72.2%, 65.3%, 0%, 31%) |
| CIE-LAB | lab(32.09, 34.67, -62.53) |
| CIE-LCH | lch(32.09, 71.50, 299.01°) |
| OKLab | oklab(42.85% 0.0051 -0.1807) |
| OKLCH | oklch(42.85% 0.181 271.6) |
| XYZ | xyz(10.7692, 7.1240, 41.8734) |
| Luminance | 0.0712 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.01
Blue Blue
#2242C7
ΔE00 3.39
Ocean Blue
#4F42B5
ΔE00 4.21
Blueberry
#464196
ΔE00 5.09
Blue With A Hint Of Purple
#533CC6
ΔE00 5.72
Cobalt
#0047AB
ΔE00 5.86
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#313DB0 #B0A431
analogous
#317DB0 #313DB0 #6531B0
triadic
#313DB0 #B0313D #3DB031
tetradic
#313DB0 #B0317D #B0A431 #31B065
square
#313DB0 #B0317D #B0A431 #31B065
split-complementary
#313DB0 #B06531 #7DB031
monochromatic
#161C50 #242C80 #313DB0 #505CCE #8088DC
Accessibility & contrast
On white
8.66
#313DB0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.42
#313DB0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #313DB0
8.66:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##313DB0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##313DB0 | 1.00 | 8.66 | 2.42 | 8.66 |
| #FFFFFF | 8.66 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.42 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.66 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051B4
Deuteranopia (green-blind)
#0046AE
Tritanopia (blue-blind)
#005B71
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #313db0; /* rgb */ color: rgb(49, 61, 176); /* oklch */ color: oklch(42.9% 0.181 271.6);
Tailwind
colors: {
custom: {
50: '#7b72c9',
500: '#313db0',
950: '#000000',
},
}SCSS
$custom: #313db0; $custom-light: #7b72c9; $custom-dark: #000000;
JSON
{
"hex": "#313db0",
"rgb": {
"r": 49,
"g": 61,
"b": 176
},
"hsl": {
"h": 234.331,
"s": 56.444,
"l": 44.118
},
"oklch": {
"l": 0.42851,
"c": 0.18077,
"h": 271.6
},
"luminance": 0.07125
}Semantic roles & 50–950 ramp
primary
#313DB0
secondary
#C5BD78
accent
#D148E0
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0813
muted
#7C7B82