#313AB1#313AB1
#313AB1 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.186 H 272.2°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).
Color values
| HEX | #313AB1 |
|---|---|
| RGB | rgb(49, 58, 177) |
| HSL | hsl(236, 57%, 44%) |
| HSV | hsv(236, 72%, 69%) |
| CMYK | cmyk(72.3%, 67.2%, 0%, 30.6%) |
| CIE-LAB | lab(31.47, 36.92, -64.14) |
| CIE-LCH | lch(31.47, 74.01, 299.92°) |
| OKLab | oklab(42.43% 0.007 -0.1854) |
| OKLCH | oklch(42.43% 0.186 272.2) |
| XYZ | xyz(10.7128, 6.8523, 42.3445) |
| Luminance | 0.0685 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 1.86
Blue Blue
#2242C7
ΔE00 3.76
Ocean Blue
#4F42B5
ΔE00 4.30
Blueberry
#464196
ΔE00 5.40
Blue With A Hint Of Purple
#533CC6
ΔE00 5.47
Blurple
#5539CC
ΔE00 6.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#313AB1 #B1A831
analogous
#317AB1 #313AB1 #6831B1
triadic
#313AB1 #B1313A #3AB131
tetradic
#313AB1 #B1317A #B1A831 #31B168
square
#313AB1 #B1317A #B1A831 #31B168
split-complementary
#313AB1 #B16831 #7AB131
monochromatic
#161B51 #242A81 #313AB1 #5159CF #8087DC
Accessibility & contrast
On white
8.86
#313AB1 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.37
#313AB1 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #313AB1
8.86:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##313AB1 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##313AB1 | 1.00 | 8.86 | 2.37 | 8.86 |
| #FFFFFF | 8.86 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.37 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.86 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0050B5
Deuteranopia (green-blind)
#0044AF
Tritanopia (blue-blind)
#005A70
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #313ab1; /* rgb */ color: rgb(49, 58, 177); /* oklch */ color: oklch(42.4% 0.186 272.2);
Tailwind
colors: {
custom: {
50: '#7c70c9',
500: '#313ab1',
950: '#000000',
},
}SCSS
$custom: #313ab1; $custom-light: #7c70c9; $custom-dark: #000000;
JSON
{
"hex": "#313ab1",
"rgb": {
"r": 49,
"g": 58,
"b": 177
},
"hsl": {
"h": 235.781,
"s": 56.637,
"l": 44.314
},
"oklch": {
"l": 0.42427,
"c": 0.18556,
"h": 272.2
},
"luminance": 0.06853
}Semantic roles & 50–950 ramp
primary
#313AB1
secondary
#C5C079
accent
#D548E0
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82