#28338E#28338E
#28338E is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.4% C 0.149 H 271.7°. Best body text is #FFFFFF at 10.74:1 contrast (WCAG AA passes).
Color values
| HEX | #28338E |
|---|---|
| RGB | rgb(40, 51, 142) |
| HSL | hsl(234, 56%, 36%) |
| HSV | hsv(234, 72%, 56%) |
| CMYK | cmyk(71.8%, 64.1%, 0%, 44.3%) |
| CIE-LAB | lab(26.07, 27.63, -51.77) |
| CIE-LCH | lch(26.07, 58.68, 298.09°) |
| OKLab | oklab(37.37% 0.0044 -0.1494) |
| OKLCH | oklch(37.37% 0.15 271.7) |
| XYZ | xyz(6.9397, 4.7711, 26.1411) |
| Luminance | 0.0477 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 4.30
Blueberry
#464196
ΔE00 5.43
Darkslateblue
#483D8B
ΔE00 5.63
Royal
#0C1793
ΔE00 7.35
Midnight Blue
#191970
ΔE00 7.86
Cobalt
#0047AB
ΔE00 8.03
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#28338E #8E8328
analogous
#28668E #28338E #50288E
triadic
#28338E #8E2833 #338E28
tetradic
#28338E #8E2866 #8E8328 #288E50
square
#28338E #8E2866 #8E8328 #288E50
split-complementary
#28338E #8E5028 #668E28
monochromatic
#0D112F #1B225E #28338E #3544BE #5F6BD2
Accessibility & contrast
On white
10.74
#28338E on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.95
#28338E on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #28338E
10.74:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##28338E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##28338E | 1.00 | 10.74 | 1.95 | 10.74 |
| #FFFFFF | 10.74 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.95 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.74 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004291
Deuteranopia (green-blind)
#00398C
Tritanopia (blue-blind)
#004A5B
Achromatopsia (no color)
#3E3E3E
Design tokens & code
CSS
--color: #28338e; /* rgb */ color: rgb(40, 51, 142); /* oklch */ color: oklch(37.4% 0.149 271.7);
Tailwind
colors: {
custom: {
50: '#716ab0',
500: '#28338e',
950: '#000000',
},
}SCSS
$custom: #28338e; $custom-light: #716ab0; $custom-dark: #000000;
JSON
{
"hex": "#28338e",
"rgb": {
"r": 40,
"g": 51,
"b": 142
},
"hsl": {
"h": 233.529,
"s": 56.044,
"l": 35.686
},
"oklch": {
"l": 0.37369,
"c": 0.1495,
"h": 271.7
},
"luminance": 0.04772
}Semantic roles & 50–950 ramp
primary
#28338E
secondary
#B7AD5B
accent
#CF48DF
background
#F7F6FA
surface
#EDEBF5
border
#C8C6CF
text
#090611
muted
#7B7A80