#3128B5#3128B5
#3128B5 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.2% C 0.209 H 274.4°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).
Color values
| HEX | #3128B5 |
|---|---|
| RGB | rgb(49, 40, 181) |
| HSL | hsl(244, 64%, 43%) |
| HSV | hsv(244, 78%, 71%) |
| CMYK | cmyk(72.9%, 77.9%, 0%, 29%) |
| CIE-LAB | lab(28.13, 48.65, -72.03) |
| CIE-LCH | lch(28.13, 86.92, 304.04°) |
| OKLab | oklab(40.16% 0.0159 -0.2083) |
| OKLCH | oklch(40.16% 0.209 274.4) |
| XYZ | xyz(10.3631, 5.5057, 44.2237) |
| Luminance | 0.0551 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Indigo Blue
#3A18B1
ΔE00 3.08
True Blue
#010FCC
ΔE00 4.42
Sapphire (survey)
#2138AB
ΔE00 5.03
Mediumblue
#0000CD
ΔE00 5.32
Ultramarine Blue
#1805DB
ΔE00 5.41
Violet Blue
#510AC9
ΔE00 5.46
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3128B5 #ACB528
analogous
#2865B5 #3128B5 #7728B5
triadic
#3128B5 #B53128 #28B531
tetradic
#3128B5 #B52865 #ACB528 #28B577
square
#3128B5 #B52865 #ACB528 #28B577
split-complementary
#3128B5 #B57728 #65B528
monochromatic
#161251 #231D83 #3128B5 #4E44D6 #7D77E1
Accessibility & contrast
On white
9.99
#3128B5 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.10
#3128B5 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3128B5
9.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3128B5 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3128B5 | 1.00 | 9.99 | 2.10 | 9.99 |
| #FFFFFF | 9.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.10 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 9.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0049B9
Deuteranopia (green-blind)
#003CB3
Tritanopia (blue-blind)
#00536E
Achromatopsia (no color)
#424242
Design tokens & code
CSS
--color: #3128b5; /* rgb */ color: rgb(49, 40, 181); /* oklch */ color: oklch(40.2% 0.209 274.4);
Tailwind
colors: {
custom: {
50: '#7e65cd',
500: '#3128b5',
950: '#000000',
},
}SCSS
$custom: #3128b5; $custom-light: #7e65cd; $custom-dark: #000000;
JSON
{
"hex": "#3128b5",
"rgb": {
"r": 49,
"g": 40,
"b": 181
},
"hsl": {
"h": 243.83,
"s": 63.801,
"l": 43.333
},
"oklch": {
"l": 0.40163,
"c": 0.20894,
"h": 274.4
},
"luminance": 0.05507
}Semantic roles & 50–950 ramp
primary
#3128B5
secondary
#C3C870
accent
#E741DC
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0614
muted
#7D7A82