#223B4F#223B4F
#223B4F is a dark, muted cyan. Relative luminance 0.040; OKLCH L 34.2% C 0.047 H 243.9°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).
Color values
| HEX | #223B4F |
|---|---|
| RGB | rgb(34, 59, 79) |
| HSL | hsl(207, 40%, 22%) |
| HSV | hsv(207, 57%, 31%) |
| CMYK | cmyk(57%, 25.3%, 0%, 69%) |
| CIE-LAB | lab(23.78, -3.01, -15.12) |
| CIE-LCH | lch(23.78, 15.42, 258.76°) |
| OKLab | oklab(34.15% -0.0207 -0.0422) |
| OKLCH | oklch(34.15% 0.047 243.9) |
| XYZ | xyz(3.6344, 4.0322, 7.9824) |
| Luminance | 0.0403 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dark Blue Grey
#1F3B4D
ΔE00 1.76
Dark Grey Blue
#29465B
ΔE00 3.62
Dark Slate Blue
#214761
ΔE00 4.49
Charcoal
#36454F
ΔE00 5.85
Marine Blue
#01386A
ΔE00 7.45
Gunmetal
#2A3439
ΔE00 7.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#223B4F #4F3622
analogous
#224F4D #223B4F #22244F
triadic
#223B4F #4F223B #3B4F22
tetradic
#223B4F #4D224F #4F3622 #244F22
square
#223B4F #4D224F #4F3622 #244F22
split-complementary
#223B4F #4F2224 #4F4D22
monochromatic
#091015 #101B24 #223B4F #345B7A #477BA5
Accessibility & contrast
On white
11.62
#223B4F on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.81
#223B4F on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #223B4F
11.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##223B4F | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##223B4F | 1.00 | 11.62 | 1.81 | 11.62 |
| #FFFFFF | 11.62 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.81 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 11.62 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#323B50
Deuteranopia (green-blind)
#2C374F
Tritanopia (blue-blind)
#094042
Achromatopsia (no color)
#393939
Design tokens & code
CSS
--color: #223b4f; /* rgb */ color: rgb(34, 59, 79); /* oklch */ color: oklch(34.2% 0.047 243.9);
Tailwind
colors: {
custom: {
50: '#617080',
500: '#223b4f',
950: '#000000',
},
}SCSS
$custom: #223b4f; $custom-light: #617080; $custom-dark: #000000;
JSON
{
"hex": "#223b4f",
"rgb": {
"r": 34,
"g": 59,
"b": 79
},
"hsl": {
"h": 206.667,
"s": 39.823,
"l": 22.157
},
"oklch": {
"l": 0.3415,
"c": 0.04702,
"h": 243.9
},
"luminance": 0.04033
}Semantic roles & 50–950 ramp
primary
#223B4F
secondary
#83634A
accent
#8D58D0
background
#F5F6F7
surface
#EAECEE
border
#C6C7C9
text
#05070A
muted
#797A7C