#243B7B#243B7B
#243B7B is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.2% C 0.113 H 266.2°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).
Color values
| HEX | #243B7B |
|---|---|
| RGB | rgb(36, 59, 123) |
| HSL | hsl(224, 55%, 31%) |
| HSV | hsv(224, 71%, 48%) |
| CMYK | cmyk(70.7%, 52%, 0%, 51.8%) |
| CIE-LAB | lab(26.54, 14.22, -39.15) |
| CIE-LCH | lch(26.54, 41.65, 289.96°) |
| OKLab | oklab(37.18% -0.0075 -0.1123) |
| OKLCH | oklch(37.18% 0.113 266.2) |
| XYZ | xyz(5.8654, 4.9325, 19.3780) |
| Luminance | 0.0493 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 4.66
Marine Blue
#01386A
ΔE00 4.99
Cobalt (survey)
#1E488F
ΔE00 5.18
Twilight Blue
#0A437A
ΔE00 5.41
Marine
#042E60
ΔE00 5.69
Prussian Blue
#004577
ΔE00 7.03
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#243B7B #7B6424
analogous
#24667B #243B7B #38247B
triadic
#243B7B #7B243B #3B7B24
tetradic
#243B7B #7B2466 #7B6424 #247B38
square
#243B7B #7B2466 #7B6424 #247B38
split-complementary
#243B7B #7B3824 #667B24
monochromatic
#080E1C #16244C #243B7B #3252AA #4E6FCB
Accessibility & contrast
On white
10.57
#243B7B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.99
#243B7B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #243B7B
10.57:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##243B7B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##243B7B | 1.00 | 10.57 | 1.99 | 10.57 |
| #FFFFFF | 10.57 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.57 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#16437D
Deuteranopia (green-blind)
#003B7A
Tritanopia (blue-blind)
#004A55
Achromatopsia (no color)
#3F3F3F
Design tokens & code
CSS
--color: #243b7b; /* rgb */ color: rgb(36, 59, 123); /* oklch */ color: oklch(37.2% 0.113 266.2);
Tailwind
colors: {
custom: {
50: '#6a70a2',
500: '#243b7b',
950: '#000000',
},
}SCSS
$custom: #243b7b; $custom-light: #6a70a2; $custom-dark: #000000;
JSON
{
"hex": "#243b7b",
"rgb": {
"r": 36,
"g": 59,
"b": 123
},
"hsl": {
"h": 224.138,
"s": 54.717,
"l": 31.176
},
"oklch": {
"l": 0.37182,
"c": 0.11259,
"h": 266.2
},
"luminance": 0.04933
}Semantic roles & 50–950 ramp
primary
#243B7B
secondary
#AD944D
accent
#B74ADE
background
#F6F6FA
surface
#ECECF3
border
#C7C7CD
text
#07070F
muted
#7A7A7F