#21338B#21338B
#21338B is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.147 H 268.9°. Best body text is #FFFFFF at 10.99:1 contrast (WCAG AA passes).
Color values
| HEX | #21338B |
|---|---|
| RGB | rgb(33, 51, 139) |
| HSL | hsl(230, 62%, 34%) |
| HSV | hsv(230, 76%, 55%) |
| CMYK | cmyk(76.3%, 63.3%, 0%, 45.5%) |
| CIE-LAB | lab(25.43, 25.59, -50.98) |
| CIE-LCH | lch(25.43, 57.04, 296.66°) |
| OKLab | oklab(36.71% -0.0029 -0.1473) |
| OKLCH | oklch(36.71% 0.147 268.9) |
| XYZ | xyz(6.4696, 4.5544, 24.9592) |
| Luminance | 0.0456 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 4.73
Blueberry
#464196
ΔE00 6.11
Darkslateblue
#483D8B
ΔE00 6.33
Darkish Blue
#014182
ΔE00 7.45
Cobalt (survey)
#1E488F
ΔE00 7.54
Royal
#0C1793
ΔE00 7.68
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#21338B #8B7921
analogous
#21688B #21338B #44218B
triadic
#21338B #8B2133 #338B21
tetradic
#21338B #8B2168 #8B7921 #218B44
square
#21338B #8B2168 #8B7921 #218B44
split-complementary
#21338B #8B4421 #688B21
monochromatic
#0A0F28 #15215A #21338B #2D45BC #5167D6
Accessibility & contrast
On white
10.99
#21338B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.91
#21338B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #21338B
10.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##21338B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##21338B | 1.00 | 10.99 | 1.91 | 10.99 |
| #FFFFFF | 10.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.91 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#00418E
Deuteranopia (green-blind)
#003789
Tritanopia (blue-blind)
#004A5A
Achromatopsia (no color)
#3C3C3C
Design tokens & code
CSS
--color: #21338b; /* rgb */ color: rgb(33, 51, 139); /* oklch */ color: oklch(36.7% 0.147 268.9);
Tailwind
colors: {
custom: {
50: '#6d6aae',
500: '#21338b',
950: '#000000',
},
}SCSS
$custom: #21338b; $custom-light: #6d6aae; $custom-dark: #000000;
JSON
{
"hex": "#21338b",
"rgb": {
"r": 33,
"g": 51,
"b": 139
},
"hsl": {
"h": 229.811,
"s": 61.628,
"l": 33.725
},
"oklch": {
"l": 0.36706,
"c": 0.14732,
"h": 268.9
},
"luminance": 0.04555
}Semantic roles & 50–950 ramp
primary
#21338B
secondary
#B9A74F
accent
#C943E5
background
#F7F6FA
surface
#EDEBF4
border
#C8C6CE
text
#080610
muted
#7B7A7F