#303BB1#303BB1
#303BB1 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.185 H 271.6°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).
Color values
| HEX | #303BB1 |
|---|---|
| RGB | rgb(48, 59, 177) |
| HSL | hsl(235, 57%, 44%) |
| HSV | hsv(235, 73%, 69%) |
| CMYK | cmyk(72.9%, 66.7%, 0%, 30.6%) |
| CIE-LAB | lab(31.65, 36.18, -63.85) |
| CIE-LCH | lch(31.65, 73.39, 299.53°) |
| OKLab | oklab(42.54% 0.0053 -0.1846) |
| OKLCH | oklch(42.54% 0.185 271.6) |
| XYZ | xyz(10.7160, 6.9295, 42.3592) |
| Luminance | 0.0693 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 1.80
Blue Blue
#2242C7
ΔE00 3.56
Ocean Blue
#4F42B5
ΔE00 4.33
Blueberry
#464196
ΔE00 5.36
Blue With A Hint Of Purple
#533CC6
ΔE00 5.60
Blue (survey)
#0343DF
ΔE00 6.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#303BB1 #B1A630
analogous
#307CB1 #303BB1 #6630B1
triadic
#303BB1 #B1303B #3BB130
tetradic
#303BB1 #B1307C #B1A630 #30B166
square
#303BB1 #B1307C #B1A630 #30B166
split-complementary
#303BB1 #B16630 #7CB130
monochromatic
#161B51 #232B81 #303BB1 #4F5ACF #7F87DC
Accessibility & contrast
On white
8.80
#303BB1 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.39
#303BB1 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #303BB1
8.80:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##303BB1 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##303BB1 | 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)
#0051B5
Deuteranopia (green-blind)
#0044AF
Tritanopia (blue-blind)
#005A71
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #303bb1; /* rgb */ color: rgb(48, 59, 177); /* oklch */ color: oklch(42.5% 0.185 271.6);
Tailwind
colors: {
custom: {
50: '#7b71c9',
500: '#303bb1',
950: '#000000',
},
}SCSS
$custom: #303bb1; $custom-light: #7b71c9; $custom-dark: #000000;
JSON
{
"hex": "#303bb1",
"rgb": {
"r": 48,
"g": 59,
"b": 177
},
"hsl": {
"h": 234.884,
"s": 57.333,
"l": 44.118
},
"oklch": {
"l": 0.42542,
"c": 0.18467,
"h": 271.6
},
"luminance": 0.06931
}Semantic roles & 50–950 ramp
primary
#303BB1
secondary
#C5BF78
accent
#D447E1
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0713
muted
#7C7A82