#313BB5#313BB5
#313BB5 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.190 H 271.8°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).
Color values
| HEX | #313BB5 |
|---|---|
| RGB | rgb(49, 59, 181) |
| HSL | hsl(235, 57%, 45%) |
| HSV | hsv(235, 73%, 71%) |
| CMYK | cmyk(72.9%, 67.4%, 0%, 29%) |
| CIE-LAB | lab(32.07, 37.70, -65.53) |
| CIE-LCH | lch(32.07, 75.61, 299.91°) |
| OKLab | oklab(42.98% 0.006 -0.1895) |
| OKLCH | oklch(42.98% 0.19 271.8) |
| XYZ | xyz(11.1683, 7.1160, 44.4920) |
| Luminance | 0.0712 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.25
Blue Blue
#2242C7
ΔE00 3.22
Ocean Blue
#4F42B5
ΔE00 4.11
Blue With A Hint Of Purple
#533CC6
ΔE00 5.12
Blueberry
#464196
ΔE00 5.72
Blue (survey)
#0343DF
ΔE00 5.75
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#313BB5 #B5AB31
analogous
#317DB5 #313BB5 #6931B5
triadic
#313BB5 #B5313B #3BB531
tetradic
#313BB5 #B5317D #B5AB31 #31B569
square
#313BB5 #B5317D #B5AB31 #31B569
split-complementary
#313BB5 #B56931 #7DB531
monochromatic
#171C55 #242B85 #313BB5 #535CD0 #838ADD
Accessibility & contrast
On white
8.67
#313BB5 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.42
#313BB5 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #313BB5
8.67:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##313BB5 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##313BB5 | 1.00 | 8.67 | 2.42 | 8.67 |
| #FFFFFF | 8.67 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.42 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.67 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0052B9
Deuteranopia (green-blind)
#0045B3
Tritanopia (blue-blind)
#005C73
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #313bb5; /* rgb */ color: rgb(49, 59, 181); /* oklch */ color: oklch(43.0% 0.190 271.8);
Tailwind
colors: {
custom: {
50: '#7d71cc',
500: '#313bb5',
950: '#000000',
},
}SCSS
$custom: #313bb5; $custom-light: #7d71cc; $custom-dark: #000000;
JSON
{
"hex": "#313bb5",
"rgb": {
"r": 49,
"g": 59,
"b": 181
},
"hsl": {
"h": 235.455,
"s": 57.391,
"l": 45.098
},
"oklch": {
"l": 0.42977,
"c": 0.18959,
"h": 271.8
},
"luminance": 0.07117
}Semantic roles & 50–950 ramp
primary
#313BB5
secondary
#C7C17B
accent
#D547E1
background
#F8F6FC
surface
#EFECF9
border
#CAC7D2
text
#0B0814
muted
#7C7B82