#313BB8#313BB8
#313BB8 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.3% C 0.193 H 271.7°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).
Color values
| HEX | #313BB8 |
|---|---|
| RGB | rgb(49, 59, 184) |
| HSL | hsl(236, 58%, 46%) |
| HSV | hsv(236, 73%, 72%) |
| CMYK | cmyk(73.4%, 67.9%, 0%, 27.8%) |
| CIE-LAB | lab(32.35, 38.76, -66.85) |
| CIE-LCH | lch(32.35, 77.27, 300.10°) |
| OKLab | oklab(43.26% 0.0057 -0.1933) |
| OKLCH | oklch(43.26% 0.193 271.7) |
| XYZ | xyz(11.4794, 7.2404, 46.1307) |
| Luminance | 0.0724 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.57
Blue Blue
#2242C7
ΔE00 2.98
Ocean Blue
#4F42B5
ΔE00 4.05
Blue With A Hint Of Purple
#533CC6
ΔE00 4.86
Blue (survey)
#0343DF
ΔE00 5.42
Blurple
#5539CC
ΔE00 5.55
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#313BB8 #B8AE31
analogous
#317EB8 #313BB8 #6B31B8
triadic
#313BB8 #B8313B #3BB831
tetradic
#313BB8 #B8317E #B8AE31 #31B86B
square
#313BB8 #B8317E #B8AE31 #31B86B
split-complementary
#313BB8 #B86B31 #7EB831
monochromatic
#171C57 #242C88 #313BB8 #555ED2 #858CDE
Accessibility & contrast
On white
8.58
#313BB8 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.45
#313BB8 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #313BB8
8.58:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##313BB8 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##313BB8 | 1.00 | 8.58 | 2.45 | 8.58 |
| #FFFFFF | 8.58 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.45 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.58 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0053BC
Deuteranopia (green-blind)
#0046B6
Tritanopia (blue-blind)
#005D74
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #313bb8; /* rgb */ color: rgb(49, 59, 184); /* oklch */ color: oklch(43.3% 0.193 271.7);
Tailwind
colors: {
custom: {
50: '#7d71ce',
500: '#313bb8',
950: '#000000',
},
}SCSS
$custom: #313bb8; $custom-light: #7d71ce; $custom-dark: #000000;
JSON
{
"hex": "#313bb8",
"rgb": {
"r": 49,
"g": 59,
"b": 184
},
"hsl": {
"h": 235.556,
"s": 57.94,
"l": 45.686
},
"oklch": {
"l": 0.43264,
"c": 0.19343,
"h": 271.7
},
"luminance": 0.07242
}Semantic roles & 50–950 ramp
primary
#313BB8
secondary
#C8C27D
accent
#D647E1
background
#F8F6FC
surface
#EFECF9
border
#CAC7D2
text
#0B0814
muted
#7C7B82