#313EB5#313EB5
#313EB5 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.5% C 0.186 H 271.3°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).
Color values
| HEX | #313EB5 |
|---|---|
| RGB | rgb(49, 62, 181) |
| HSL | hsl(234, 57%, 45%) |
| HSV | hsv(234, 73%, 71%) |
| CMYK | cmyk(72.9%, 65.7%, 0%, 29%) |
| CIE-LAB | lab(32.77, 35.82, -64.38) |
| CIE-LCH | lch(32.77, 73.67, 299.09°) |
| OKLab | oklab(43.49% 0.0041 -0.1861) |
| OKLCH | oklch(43.49% 0.186 271.3) |
| XYZ | xyz(11.3269, 7.4333, 44.5449) |
| Luminance | 0.0743 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.52
Blue Blue
#2242C7
ΔE00 2.72
Ocean Blue
#4F42B5
ΔE00 4.00
Blue With A Hint Of Purple
#533CC6
ΔE00 5.32
Blue (survey)
#0343DF
ΔE00 5.43
Blueberry
#464196
ΔE00 5.56
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#313EB5 #B5A831
analogous
#3180B5 #313EB5 #6631B5
triadic
#313EB5 #B5313E #3EB531
tetradic
#313EB5 #B53180 #B5A831 #31B566
square
#313EB5 #B53180 #B5A831 #31B566
split-complementary
#313EB5 #B56631 #80B531
monochromatic
#171D55 #242E85 #313EB5 #535FD0 #838CDD
Accessibility & contrast
On white
8.44
#313EB5 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.49
#313EB5 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #313EB5
8.44:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##313EB5 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##313EB5 | 1.00 | 8.44 | 2.49 | 8.44 |
| #FFFFFF | 8.44 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.49 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.44 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0053B9
Deuteranopia (green-blind)
#0047B3
Tritanopia (blue-blind)
#005D74
Achromatopsia (no color)
#4D4D4D
Design tokens & code
CSS
--color: #313eb5; /* rgb */ color: rgb(49, 62, 181); /* oklch */ color: oklch(43.5% 0.186 271.3);
Tailwind
colors: {
custom: {
50: '#7c73cc',
500: '#313eb5',
950: '#000000',
},
}SCSS
$custom: #313eb5; $custom-light: #7c73cc; $custom-dark: #000000;
JSON
{
"hex": "#313eb5",
"rgb": {
"r": 49,
"g": 62,
"b": 181
},
"hsl": {
"h": 234.091,
"s": 57.391,
"l": 45.098
},
"oklch": {
"l": 0.4349,
"c": 0.18615,
"h": 271.3
},
"luminance": 0.07434
}Semantic roles & 50–950 ramp
primary
#313EB5
secondary
#C7BF7B
accent
#D247E1
background
#F8F7FC
surface
#EFEDF9
border
#CAC8D2
text
#0B0813
muted
#7C7B82