#233B4E#233B4E
#233B4E is a dark, muted cyan. Relative luminance 0.040; OKLCH L 34.2% C 0.045 H 243.5°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).
Color values
| HEX | #233B4E |
|---|---|
| RGB | rgb(35, 59, 78) |
| HSL | hsl(207, 38%, 22%) |
| HSV | hsv(207, 55%, 31%) |
| CMYK | cmyk(55.1%, 24.4%, 0%, 69.4%) |
| CIE-LAB | lab(23.79, -3.09, -14.44) |
| CIE-LCH | lch(23.79, 14.77, 257.94°) |
| OKLab | oklab(34.16% -0.0201 -0.0403) |
| OKLCH | oklch(34.16% 0.045 243.5) |
| XYZ | xyz(3.6318, 4.0350, 7.7937) |
| Luminance | 0.0403 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dark Blue Grey
#1F3B4D
ΔE00 1.56
Dark Grey Blue
#29465B
ΔE00 3.65
Dark Slate Blue
#214761
ΔE00 4.66
Charcoal
#36454F
ΔE00 5.51
Gunmetal
#2A3439
ΔE00 7.19
Marine Blue
#01386A
ΔE00 7.87
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#233B4E #4E3623
analogous
#234E4C #233B4E #23264E
triadic
#233B4E #4E233B #3B4E23
tetradic
#233B4E #4C234E #4E3623 #264E23
square
#233B4E #4C234E #4E3623 #264E23
split-complementary
#233B4E #4E2326 #4E4C23
monochromatic
#091015 #101B24 #233B4E #365B78 #497BA2
Accessibility & contrast
On white
11.62
#233B4E on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.81
#233B4E on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #233B4E
11.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##233B4E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##233B4E | 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)
#333B4F
Deuteranopia (green-blind)
#2D374E
Tritanopia (blue-blind)
#0D4041
Achromatopsia (no color)
#393939
Design tokens & code
CSS
--color: #233b4e; /* rgb */ color: rgb(35, 59, 78); /* oklch */ color: oklch(34.2% 0.045 243.5);
Tailwind
colors: {
custom: {
50: '#61707f',
500: '#233b4e',
950: '#000000',
},
}SCSS
$custom: #233b4e; $custom-light: #61707f; $custom-dark: #000000;
JSON
{
"hex": "#233b4e",
"rgb": {
"r": 35,
"g": 59,
"b": 78
},
"hsl": {
"h": 206.512,
"s": 38.053,
"l": 22.157
},
"oklch": {
"l": 0.34157,
"c": 0.04499,
"h": 243.5
},
"luminance": 0.04035
}Semantic roles & 50–950 ramp
primary
#233B4E
secondary
#82634B
accent
#8D5ACE
background
#F5F6F7
surface
#EAECEE
border
#C6C7C9
text
#05070A
muted
#797A7C