#303DA5#303DA5
#303DA5 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.166 H 271.6°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).
Color values
| HEX | #303DA5 |
|---|---|
| RGB | rgb(48, 61, 165) |
| HSL | hsl(233, 55%, 42%) |
| HSV | hsv(233, 71%, 65%) |
| CMYK | cmyk(70.9%, 63%, 0%, 35.3%) |
| CIE-LAB | lab(31.07, 30.58, -57.61) |
| CIE-LCH | lch(31.07, 65.23, 297.96°) |
| OKLab | oklab(41.79% 0.0046 -0.1663) |
| OKLCH | oklch(41.79% 0.166 271.6) |
| XYZ | xyz(9.6769, 6.6815, 36.3697) |
| Luminance | 0.0668 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 1.95
Blueberry
#464196
ΔE00 4.20
Blue Blue
#2242C7
ΔE00 4.71
Ocean Blue
#4F42B5
ΔE00 5.08
Cobalt
#0047AB
ΔE00 5.47
Darkslateblue
#483D8B
ΔE00 5.98
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#303DA5 #A59830
analogous
#3078A5 #303DA5 #5D30A5
triadic
#303DA5 #A5303D #3DA530
tetradic
#303DA5 #A53078 #A59830 #30A55D
square
#303DA5 #A53078 #A59830 #30A55D
split-complementary
#303DA5 #A55D30 #78A530
monochromatic
#141A46 #222B76 #303DA5 #4857CA #7882D8
Accessibility & contrast
On white
8.99
#303DA5 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.34
#303DA5 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #303DA5
8.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##303DA5 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##303DA5 | 1.00 | 8.99 | 2.34 | 8.99 |
| #FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.34 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004FA8
Deuteranopia (green-blind)
#0044A3
Tritanopia (blue-blind)
#00586B
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #303da5; /* rgb */ color: rgb(48, 61, 165); /* oklch */ color: oklch(41.8% 0.166 271.6);
Tailwind
colors: {
custom: {
50: '#7872c1',
500: '#303da5',
950: '#000000',
},
}SCSS
$custom: #303da5; $custom-light: #7872c1; $custom-dark: #000000;
JSON
{
"hex": "#303da5",
"rgb": {
"r": 48,
"g": 61,
"b": 165
},
"hsl": {
"h": 233.333,
"s": 54.93,
"l": 41.765
},
"oklch": {
"l": 0.41793,
"c": 0.16636,
"h": 271.6
},
"luminance": 0.06682
}Semantic roles & 50–950 ramp
primary
#303DA5
secondary
#C0B771
accent
#CE4ADE
background
#F7F6FC
surface
#EEECF8
border
#C9C7D1
text
#0A0812
muted
#7C7B81