#223FB3#223FB3
#223FB3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.186 H 266.8°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).
Color values
| HEX | #223FB3 |
|---|---|
| RGB | rgb(34, 63, 179) |
| HSL | hsl(228, 68%, 42%) |
| HSV | hsv(228, 81%, 70%) |
| CMYK | cmyk(81%, 64.8%, 0%, 29.8%) |
| CIE-LAB | lab(32.14, 32.94, -64.25) |
| CIE-LCH | lch(32.14, 72.21, 297.14°) |
| OKLab | oklab(42.78% -0.0103 -0.186) |
| OKLCH | oklch(42.78% 0.186 266.8) |
| XYZ | xyz(10.5710, 7.1485, 43.4617) |
| Luminance | 0.0715 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.24
Blue Blue
#2242C7
ΔE00 2.78
Cobalt
#0047AB
ΔE00 4.36
Ocean Blue
#4F42B5
ΔE00 5.50
Blue (survey)
#0343DF
ΔE00 5.58
Blueberry
#464196
ΔE00 6.15
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#223FB3 #B39622
analogous
#2288B3 #223FB3 #4E22B3
triadic
#223FB3 #B3223F #3FB322
tetradic
#223FB3 #B32288 #B39622 #22B34E
square
#223FB3 #B32288 #B39622 #22B34E
split-complementary
#223FB3 #B34E22 #88B322
monochromatic
#0E1B4C #182D80 #223FB3 #3959D9 #6C84E3
Accessibility & contrast
On white
8.64
#223FB3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.43
#223FB3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #223FB3
8.64:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##223FB3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##223FB3 | 1.00 | 8.64 | 2.43 | 8.64 |
| #FFFFFF | 8.64 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.43 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.64 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0053B7
Deuteranopia (green-blind)
#0045B1
Tritanopia (blue-blind)
#005E73
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #223fb3; /* rgb */ color: rgb(34, 63, 179); /* oklch */ color: oklch(42.8% 0.186 266.8);
Tailwind
colors: {
custom: {
50: '#7774cb',
500: '#223fb3',
950: '#000000',
},
}SCSS
$custom: #223fb3; $custom-light: #7774cb; $custom-dark: #000000;
JSON
{
"hex": "#223fb3",
"rgb": {
"r": 34,
"g": 63,
"b": 179
},
"hsl": {
"h": 228,
"s": 68.075,
"l": 41.765
},
"oklch": {
"l": 0.42782,
"c": 0.18631,
"h": 266.8
},
"luminance": 0.0715
}Semantic roles & 50–950 ramp
primary
#223FB3
secondary
#C9B668
accent
#C83DEB
background
#F8F7FC
surface
#EFEDF9
border
#CAC8D2
text
#0A0813
muted
#7C7B82