#343FA8#343FA8
#343FA8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.167 H 272.5°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).
Color values
| HEX | #343FA8 |
|---|---|
| RGB | rgb(52, 63, 168) |
| HSL | hsl(234, 53%, 43%) |
| HSV | hsv(234, 69%, 66%) |
| CMYK | cmyk(69%, 62.5%, 0%, 34.1%) |
| CIE-LAB | lab(32.06, 30.91, -57.79) |
| CIE-LCH | lch(32.06, 65.54, 298.14°) |
| OKLab | oklab(42.66% 0.0074 -0.1667) |
| OKLCH | oklch(42.66% 0.167 272.5) |
| XYZ | xyz(10.2592, 7.1113, 37.8701) |
| Luminance | 0.0711 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.45
Blueberry
#464196
ΔE00 4.05
Blue Blue
#2242C7
ΔE00 4.26
Ocean Blue
#4F42B5
ΔE00 4.43
Cobalt
#0047AB
ΔE00 5.45
Darkslateblue
#483D8B
ΔE00 6.03
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#343FA8 #A89D34
analogous
#3479A8 #343FA8 #6334A8
triadic
#343FA8 #A8343F #3FA834
tetradic
#343FA8 #A83479 #A89D34 #34A863
square
#343FA8 #A83479 #A89D34 #34A863
split-complementary
#343FA8 #A86334 #79A834
monochromatic
#171C4B #262D79 #343FA8 #505CC9 #7F87D7
Accessibility & contrast
On white
8.67
#343FA8 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.42
#343FA8 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #343FA8
8.67:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##343FA8 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##343FA8 | 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)
#0051AB
Deuteranopia (green-blind)
#0046A6
Tritanopia (blue-blind)
#005A6D
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #343fa8; /* rgb */ color: rgb(52, 63, 168); /* oklch */ color: oklch(42.7% 0.167 272.5);
Tailwind
colors: {
custom: {
50: '#7b74c3',
500: '#343fa8',
950: '#000000',
},
}SCSS
$custom: #343fa8; $custom-light: #7b74c3; $custom-dark: #000000;
JSON
{
"hex": "#343fa8",
"rgb": {
"r": 52,
"g": 63,
"b": 168
},
"hsl": {
"h": 234.31,
"s": 52.727,
"l": 43.137
},
"oklch": {
"l": 0.42663,
"c": 0.16687,
"h": 272.5
},
"luminance": 0.07112
}Semantic roles & 50–950 ramp
primary
#343FA8
secondary
#C0BA77
accent
#CE4CDC
background
#F8F7FC
surface
#EFEDF8
border
#CAC8D1
text
#0A0813
muted
#7C7B82