#2B288F#2B288F
#2B288F is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.7% C 0.163 H 275.5°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).
Color values
| HEX | #2B288F |
|---|---|
| RGB | rgb(43, 40, 143) |
| HSL | hsl(242, 56%, 36%) |
| HSV | hsv(242, 72%, 56%) |
| CMYK | cmyk(69.9%, 72%, 0%, 43.9%) |
| CIE-LAB | lab(23.72, 35.47, -56.24) |
| CIE-LCH | lch(23.72, 66.49, 302.24°) |
| OKLab | oklab(35.74% 0.0158 -0.1625) |
| OKLCH | oklch(35.74% 0.163 275.5) |
| XYZ | xyz(6.7113, 4.0137, 26.4023) |
| Luminance | 0.0401 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Royal
#0C1793
ΔE00 4.32
Midnight Blue
#191970
ΔE00 5.82
Sapphire (survey)
#2138AB
ΔE00 5.87
Indigo Blue
#3A18B1
ΔE00 6.16
Cobalt Blue
#030AA7
ΔE00 6.46
Royal Blue (survey)
#0504AA
ΔE00 7.02
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2B288F #8C8F28
analogous
#28588F #2B288F #5E288F
triadic
#2B288F #8F2B28 #288F2B
tetradic
#2B288F #8F2858 #8C8F28 #288F5E
square
#2B288F #8F2858 #8C8F28 #288F5E
split-complementary
#2B288F #8F5E28 #588F28
monochromatic
#0E0D2F #1D1B5F #2B288F #3935BF #625FD2
Accessibility & contrast
On white
11.65
#2B288F on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.80
#2B288F on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2B288F
11.65:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2B288F | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2B288F | 1.00 | 11.65 | 1.80 | 11.65 |
| #FFFFFF | 11.65 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.80 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 11.65 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#003D92
Deuteranopia (green-blind)
#00348D
Tritanopia (blue-blind)
#004458
Achromatopsia (no color)
#383838
Design tokens & code
CSS
--color: #2b288f; /* rgb */ color: rgb(43, 40, 143); /* oklch */ color: oklch(35.7% 0.163 275.5);
Tailwind
colors: {
custom: {
50: '#7363b1',
500: '#2b288f',
950: '#000000',
},
}SCSS
$custom: #2b288f; $custom-light: #7363b1; $custom-dark: #000000;
JSON
{
"hex": "#2b288f",
"rgb": {
"r": 43,
"g": 40,
"b": 143
},
"hsl": {
"h": 241.748,
"s": 56.284,
"l": 35.882
},
"oklch": {
"l": 0.35738,
"c": 0.16325,
"h": 275.5
},
"luminance": 0.04014
}Semantic roles & 50–950 ramp
primary
#2B288F
secondary
#B5B85B
accent
#E048DB
background
#F7F5FB
surface
#EDEAF6
border
#C8C6D0
text
#090511
muted
#7B7980