#233E5B#233E5B
#233E5B is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.061 H 251.4°. Best body text is #FFFFFF at 10.99:1 contrast (WCAG AA passes).
Color values
| HEX | #233E5B |
|---|---|
| RGB | rgb(35, 62, 91) |
| HSL | hsl(211, 44%, 25%) |
| HSV | hsv(211, 62%, 36%) |
| CMYK | cmyk(61.5%, 31.9%, 0%, 64.3%) |
| CIE-LAB | lab(25.43, -0.39, -20.42) |
| CIE-LCH | lch(25.43, 20.42, 268.90°) |
| OKLab | oklab(35.67% -0.0193 -0.0575) |
| OKLCH | oklch(35.67% 0.061 251.4) |
| XYZ | xyz(4.3034, 4.5575, 10.5484) |
| Luminance | 0.0456 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Marine Blue
#01386A
ΔE00 4.70
Dark Slate Blue
#214761
ΔE00 4.74
Dark Grey Blue
#29465B
ΔE00 4.94
Twilight Blue
#0A437A
ΔE00 5.40
Prussian Blue
#004577
ΔE00 5.54
Dark Blue Grey
#1F3B4D
ΔE00 5.56
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#233E5B #5B4023
analogous
#235A5B #233E5B #24235B
triadic
#233E5B #5B233E #3E5B23
tetradic
#233E5B #5B235A #5B4023 #235B24
square
#233E5B #5B235A #5B4023 #235B24
split-complementary
#233E5B #5B2423 #5A5B23
monochromatic
#090F16 #12202F #233E5B #345C87 #457AB3
Accessibility & contrast
On white
10.99
#233E5B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.91
#233E5B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #233E5B
10.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##233E5B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##233E5B | 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)
#323F5C
Deuteranopia (green-blind)
#2B3A5A
Tritanopia (blue-blind)
#004548
Achromatopsia (no color)
#3C3C3C
Design tokens & code
CSS
--color: #233e5b; /* rgb */ color: rgb(35, 62, 91); /* oklch */ color: oklch(35.7% 0.061 251.4);
Tailwind
colors: {
custom: {
50: '#637389',
500: '#233e5b',
950: '#000000',
},
}SCSS
$custom: #233e5b; $custom-light: #637389; $custom-dark: #000000;
JSON
{
"hex": "#233e5b",
"rgb": {
"r": 35,
"g": 62,
"b": 91
},
"hsl": {
"h": 211.071,
"s": 44.444,
"l": 24.706
},
"oklch": {
"l": 0.35667,
"c": 0.06061,
"h": 251.4
},
"luminance": 0.04558
}Semantic roles & 50–950 ramp
primary
#233E5B
secondary
#8F6E4B
accent
#9654D4
background
#F6F6F8
surface
#EBECF0
border
#C6C7CB
text
#05080B
muted
#7A7B7C