#233A81#233A81
#233A81 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.4% C 0.123 H 266.8°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).
Color values
| HEX | #233A81 |
|---|---|
| RGB | rgb(35, 58, 129) |
| HSL | hsl(225, 57%, 32%) |
| HSV | hsv(225, 73%, 51%) |
| CMYK | cmyk(72.9%, 55%, 0%, 49.4%) |
| CIE-LAB | lab(26.64, 17.11, -42.76) |
| CIE-LCH | lch(26.64, 46.06, 291.81°) |
| OKLab | oklab(37.39% -0.0069 -0.123) |
| OKLCH | oklch(37.39% 0.123 266.8) |
| XYZ | xyz(6.1673, 4.9678, 21.3985) |
| Luminance | 0.0497 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 4.96
Cobalt (survey)
#1E488F
ΔE00 5.22
Marine Blue
#01386A
ΔE00 5.61
Twilight Blue
#0A437A
ΔE00 5.91
Marine
#042E60
ΔE00 6.24
Blueberry
#464196
ΔE00 6.50
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#233A81 #816A23
analogous
#236981 #233A81 #3B2381
triadic
#233A81 #81233A #3A8123
tetradic
#233A81 #812369 #816A23 #23813B
square
#233A81 #812369 #816A23 #23813B
split-complementary
#233A81 #813B23 #698123
monochromatic
#090F21 #162451 #233A81 #3050B1 #4F6ECF
Accessibility & contrast
On white
10.53
#233A81 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.99
#233A81 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #233A81
10.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##233A81 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##233A81 | 1.00 | 10.53 | 1.99 | 10.53 |
| #FFFFFF | 10.53 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.53 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#074483
Deuteranopia (green-blind)
#003B80
Tritanopia (blue-blind)
#004B57
Achromatopsia (no color)
#3F3F3F
Design tokens & code
CSS
--color: #233a81; /* rgb */ color: rgb(35, 58, 129); /* oklch */ color: oklch(37.4% 0.123 266.8);
Tailwind
colors: {
custom: {
50: '#6b6fa6',
500: '#233a81',
950: '#000000',
},
}SCSS
$custom: #233a81; $custom-light: #6b6fa6; $custom-dark: #000000;
JSON
{
"hex": "#233a81",
"rgb": {
"r": 35,
"g": 58,
"b": 129
},
"hsl": {
"h": 225.319,
"s": 57.317,
"l": 32.157
},
"oklch": {
"l": 0.37386,
"c": 0.12319,
"h": 266.8
},
"luminance": 0.04968
}Semantic roles & 50–950 ramp
primary
#233A81
secondary
#B39A4D
accent
#BB47E1
background
#F6F6FA
surface
#ECECF4
border
#C7C7CE
text
#07070F
muted
#7A7A7F