#313BB0#313BB0
#313BB0 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.183 H 272.0°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).
Color values
| HEX | #313BB0 |
|---|---|
| RGB | rgb(49, 59, 176) |
| HSL | hsl(235, 56%, 44%) |
| HSV | hsv(235, 72%, 69%) |
| CMYK | cmyk(72.2%, 66.5%, 0%, 31%) |
| CIE-LAB | lab(31.61, 35.94, -63.31) |
| CIE-LCH | lch(31.61, 72.80, 299.58°) |
| OKLab | oklab(42.5% 0.0064 -0.183) |
| OKLCH | oklch(42.5% 0.183 272) |
| XYZ | xyz(10.6644, 6.9144, 41.8385) |
| Luminance | 0.0692 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 1.81
Blue Blue
#2242C7
ΔE00 3.69
Ocean Blue
#4F42B5
ΔE00 4.28
Blueberry
#464196
ΔE00 5.22
Blue With A Hint Of Purple
#533CC6
ΔE00 5.60
Blue (survey)
#0343DF
ΔE00 6.33
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#313BB0 #B0A631
analogous
#317BB0 #313BB0 #6731B0
triadic
#313BB0 #B0313B #3BB031
tetradic
#313BB0 #B0317B #B0A631 #31B067
square
#313BB0 #B0317B #B0A631 #31B067
split-complementary
#313BB0 #B06731 #7BB031
monochromatic
#161B50 #242B80 #313BB0 #505ACE #8087DC
Accessibility & contrast
On white
8.81
#313BB0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.38
#313BB0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #313BB0
8.81:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##313BB0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##313BB0 | 1.00 | 8.81 | 2.38 | 8.81 |
| #FFFFFF | 8.81 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.38 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.81 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0050B4
Deuteranopia (green-blind)
#0044AE
Tritanopia (blue-blind)
#005A70
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #313bb0; /* rgb */ color: rgb(49, 59, 176); /* oklch */ color: oklch(42.5% 0.183 272.0);
Tailwind
colors: {
custom: {
50: '#7b71c9',
500: '#313bb0',
950: '#000000',
},
}SCSS
$custom: #313bb0; $custom-light: #7b71c9; $custom-dark: #000000;
JSON
{
"hex": "#313bb0",
"rgb": {
"r": 49,
"g": 59,
"b": 176
},
"hsl": {
"h": 235.276,
"s": 56.444,
"l": 44.118
},
"oklch": {
"l": 0.42504,
"c": 0.18311,
"h": 272
},
"luminance": 0.06915
}Semantic roles & 50–950 ramp
primary
#313BB0
secondary
#C5BF78
accent
#D448E0
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82