#313BB1#313BB1
#313BB1 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.184 H 272.0°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).
Color values
| HEX | #313BB1 |
|---|---|
| RGB | rgb(49, 59, 177) |
| HSL | hsl(235, 57%, 44%) |
| HSV | hsv(235, 72%, 69%) |
| CMYK | cmyk(72.3%, 66.7%, 0%, 30.6%) |
| CIE-LAB | lab(31.70, 36.29, -63.76) |
| CIE-LCH | lch(31.70, 73.36, 299.65°) |
| OKLab | oklab(42.6% 0.0064 -0.1843) |
| OKLCH | oklch(42.6% 0.184 272) |
| XYZ | xyz(10.7637, 6.9541, 42.3615) |
| Luminance | 0.0696 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 1.88
Blue Blue
#2242C7
ΔE00 3.59
Ocean Blue
#4F42B5
ΔE00 4.24
Blueberry
#464196
ΔE00 5.32
Blue With A Hint Of Purple
#533CC6
ΔE00 5.50
Blue (survey)
#0343DF
ΔE00 6.22
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#313BB1 #B1A731
analogous
#317BB1 #313BB1 #6731B1
triadic
#313BB1 #B1313B #3BB131
tetradic
#313BB1 #B1317B #B1A731 #31B167
square
#313BB1 #B1317B #B1A731 #31B167
split-complementary
#313BB1 #B16731 #7BB131
monochromatic
#161B51 #242B81 #313BB1 #515ACF #8088DC
Accessibility & contrast
On white
8.78
#313BB1 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.39
#313BB1 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #313BB1
8.78:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##313BB1 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##313BB1 | 1.00 | 8.78 | 2.39 | 8.78 |
| #FFFFFF | 8.78 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.39 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.78 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051B5
Deuteranopia (green-blind)
#0045AF
Tritanopia (blue-blind)
#005A71
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #313bb1; /* rgb */ color: rgb(49, 59, 177); /* oklch */ color: oklch(42.6% 0.184 272.0);
Tailwind
colors: {
custom: {
50: '#7c71c9',
500: '#313bb1',
950: '#000000',
},
}SCSS
$custom: #313bb1; $custom-light: #7c71c9; $custom-dark: #000000;
JSON
{
"hex": "#313bb1",
"rgb": {
"r": 49,
"g": 59,
"b": 177
},
"hsl": {
"h": 235.313,
"s": 56.637,
"l": 44.314
},
"oklch": {
"l": 0.42598,
"c": 0.18441,
"h": 272
},
"luminance": 0.06955
}Semantic roles & 50–950 ramp
primary
#313BB1
secondary
#C5BF79
accent
#D448E0
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82