#243F7B#243F7B
#243F7B is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.1% C 0.107 H 263.8°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).
Color values
| HEX | #243F7B |
|---|---|
| RGB | rgb(36, 63, 123) |
| HSL | hsl(221, 55%, 31%) |
| HSV | hsv(221, 71%, 48%) |
| CMYK | cmyk(70.7%, 48.8%, 0%, 51.8%) |
| CIE-LAB | lab(27.74, 11.44, -37.23) |
| CIE-LCH | lch(27.74, 38.95, 287.08°) |
| OKLab | oklab(38.09% -0.0115 -0.1066) |
| OKLCH | oklch(38.09% 0.107 263.8) |
| XYZ | xyz(6.0790, 5.3595, 19.4492) |
| Luminance | 0.0536 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 3.60
Cobalt (survey)
#1E488F
ΔE00 4.03
Twilight Blue
#0A437A
ΔE00 4.17
Marine Blue
#01386A
ΔE00 4.59
Prussian Blue
#004577
ΔE00 5.81
Marine
#042E60
ΔE00 6.18
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#243F7B #7B6024
analogous
#246A7B #243F7B #34247B
triadic
#243F7B #7B243F #3F7B24
tetradic
#243F7B #7B246A #7B6024 #247B34
square
#243F7B #7B246A #7B6024 #247B34
split-complementary
#243F7B #7B3424 #6A7B24
monochromatic
#080F1C #16274C #243F7B #3257AA #4E75CB
Accessibility & contrast
On white
10.14
#243F7B on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.07
#243F7B on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #243F7B
10.14:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##243F7B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##243F7B | 1.00 | 10.14 | 2.07 | 10.14 |
| #FFFFFF | 10.14 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.07 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.14 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#20467D
Deuteranopia (green-blind)
#0D3E7A
Tritanopia (blue-blind)
#004D57
Achromatopsia (no color)
#414141
Design tokens & code
CSS
--color: #243f7b; /* rgb */ color: rgb(36, 63, 123); /* oklch */ color: oklch(38.1% 0.107 263.8);
Tailwind
colors: {
custom: {
50: '#6a73a2',
500: '#243f7b',
950: '#000000',
},
}SCSS
$custom: #243f7b; $custom-light: #6a73a2; $custom-dark: #000000;
JSON
{
"hex": "#243f7b",
"rgb": {
"r": 36,
"g": 63,
"b": 123
},
"hsl": {
"h": 221.379,
"s": 54.717,
"l": 31.176
},
"oklch": {
"l": 0.38094,
"c": 0.10724,
"h": 263.8
},
"luminance": 0.0536
}Semantic roles & 50–950 ramp
primary
#243F7B
secondary
#AD904D
accent
#B04ADE
background
#F6F6FA
surface
#ECECF3
border
#C7C7CD
text
#07080F
muted
#7A7B7F