#343FA3#343FA3
#343FA3 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.160 H 272.7°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).
Color values
| HEX | #343FA3 |
|---|---|
| RGB | rgb(52, 63, 163) |
| HSL | hsl(234, 52%, 42%) |
| HSV | hsv(234, 68%, 64%) |
| CMYK | cmyk(68.1%, 61.3%, 0%, 36.1%) |
| CIE-LAB | lab(31.64, 29.12, -55.46) |
| CIE-LCH | lch(31.64, 62.64, 297.70°) |
| OKLab | oklab(42.23% 0.0075 -0.1599) |
| OKLCH | oklch(42.23% 0.16 272.7) |
| XYZ | xyz(9.8023, 6.9285, 35.4640) |
| Luminance | 0.0693 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.70
Blueberry
#464196
ΔE00 3.62
Ocean Blue
#4F42B5
ΔE00 4.88
Blue Blue
#2242C7
ΔE00 4.94
Cobalt
#0047AB
ΔE00 5.42
Darkslateblue
#483D8B
ΔE00 5.54
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#343FA3 #A39834
analogous
#3477A3 #343FA3 #6134A3
triadic
#343FA3 #A3343F #3FA334
tetradic
#343FA3 #A33477 #A39834 #34A361
square
#343FA3 #A33477 #A39834 #34A361
split-complementary
#343FA3 #A36134 #77A334
monochromatic
#161B46 #252D75 #343FA3 #4E5AC6 #7C85D5
Accessibility & contrast
On white
8.80
#343FA3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.39
#343FA3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #343FA3
8.80:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##343FA3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##343FA3 | 1.00 | 8.80 | 2.39 | 8.80 |
| #FFFFFF | 8.80 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.39 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.80 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0050A6
Deuteranopia (green-blind)
#0046A1
Tritanopia (blue-blind)
#00586B
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #343fa3; /* rgb */ color: rgb(52, 63, 163); /* oklch */ color: oklch(42.2% 0.160 272.7);
Tailwind
colors: {
custom: {
50: '#7974bf',
500: '#343fa3',
950: '#000000',
},
}SCSS
$custom: #343fa3; $custom-light: #7974bf; $custom-dark: #000000;
JSON
{
"hex": "#343fa3",
"rgb": {
"r": 52,
"g": 63,
"b": 163
},
"hsl": {
"h": 234.054,
"s": 51.628,
"l": 42.157
},
"oklch": {
"l": 0.42227,
"c": 0.16006,
"h": 272.7
},
"luminance": 0.06929
}Semantic roles & 50–950 ramp
primary
#343FA3
secondary
#BEB775
accent
#CD4DDB
background
#F7F7FB
surface
#EEEDF7
border
#C9C8D0
text
#0A0812
muted
#7C7B81