#233B4F#233B4F
#233B4F is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.046 H 244.9°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).
Color values
| HEX | #233B4F |
|---|---|
| RGB | rgb(35, 59, 79) |
| HSL | hsl(207, 39%, 22%) |
| HSV | hsv(207, 56%, 31%) |
| CMYK | cmyk(55.7%, 25.3%, 0%, 69%) |
| CIE-LAB | lab(23.83, -2.74, -15.03) |
| CIE-LCH | lch(23.83, 15.28, 259.69°) |
| OKLab | oklab(34.21% -0.0197 -0.0419) |
| OKLCH | oklch(34.21% 0.046 244.9) |
| XYZ | xyz(3.6679, 4.0495, 7.9840) |
| Luminance | 0.0405 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dark Blue Grey
#1F3B4D
ΔE00 2.03
Dark Grey Blue
#29465B
ΔE00 3.70
Dark Slate Blue
#214761
ΔE00 4.59
Charcoal
#36454F
ΔE00 5.83
Marine Blue
#01386A
ΔE00 7.43
Gunmetal
#2A3439
ΔE00 7.57
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#233B4F #4F3723
analogous
#234F4D #233B4F #23254F
triadic
#233B4F #4F233B #3B4F23
tetradic
#233B4F #4D234F #4F3723 #254F23
square
#233B4F #4D234F #4F3723 #254F23
split-complementary
#233B4F #4F2325 #4F4D23
monochromatic
#091015 #101B25 #233B4F #365B79 #497AA4
Accessibility & contrast
On white
11.60
#233B4F on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.81
#233B4F on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #233B4F
11.60:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##233B4F | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##233B4F | 1.00 | 11.60 | 1.81 | 11.60 |
| #FFFFFF | 11.60 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.81 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 11.60 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#333B50
Deuteranopia (green-blind)
#2D374F
Tritanopia (blue-blind)
#0C4042
Achromatopsia (no color)
#393939
Design tokens & code
CSS
--color: #233b4f; /* rgb */ color: rgb(35, 59, 79); /* oklch */ color: oklch(34.2% 0.046 244.9);
Tailwind
colors: {
custom: {
50: '#617080',
500: '#233b4f',
950: '#000000',
},
}SCSS
$custom: #233b4f; $custom-light: #617080; $custom-dark: #000000;
JSON
{
"hex": "#233b4f",
"rgb": {
"r": 35,
"g": 59,
"b": 79
},
"hsl": {
"h": 207.273,
"s": 38.596,
"l": 22.353
},
"oklch": {
"l": 0.3421,
"c": 0.04633,
"h": 244.9
},
"luminance": 0.0405
}Semantic roles & 50–950 ramp
primary
#233B4F
secondary
#83644B
accent
#8F59CF
background
#F5F6F7
surface
#EAECEE
border
#C6C7C9
text
#05070A
muted
#797A7C